Firehouse Subs can be great for protein.

It can also get very high-calorie very quickly.

That is the tension with Firehouse. The subs are big, the meats are generous, and many menu items have impressive protein numbers. But a medium sub can easily land in the 700–900 calorie range, and large subs can go well over 1,100 calories. Add mayo, cheese, ranch, chips, cookies, mac and cheese, or a sugary drink, and the meal can become much bigger than expected.

So the best question is not:

“Which Firehouse Subs item has the most protein?”

The better question is:

“Which Firehouse Subs order gives the most protein for the calories?”

By that standard, the best Firehouse Subs high-protein orders are usually:

Firehouse Chopped Salad with Grilled Chicken
Firehouse Chopped Salad with Turkey
Chopped Hook & Ladder Salad
Small Spicy Cajun Chicken Sub
Small Cajun Chicken Sub
Small Chicken Breast Sub
Small Corned Beef Sub
Medium Cajun Chicken Sub
Medium Spicy Cajun Chicken Sub
Medium Chicken Breast Sub
Medium Corned Beef Sub
Chili Bowl or Chili Cup
Medium Chicken ’N’ Cheddar Rancher, if you want a newer high-protein chicken option and can fit the calories

This guide uses current public Firehouse Subs nutrition listings where available. FastFoodNutrition’s Firehouse Subs database was updated October 3, 2025, and its item pages cite Firehouse Subs as the nutrition source. Firehouse’s newest Chicken ’N’ Cheddar Rancher launched nationally in 2026; Firehouse’s official product page lists the medium at 940 calories, while Allrecipes reported the medium contains 49g protein. Nutrition can vary by country, store, bread, cheese, condiments, and customization, so use the Firehouse app or official nutrition calculator for strict tracking.

This is not medical advice or a personalized diet plan. It is a practical ordering guide for people who want more protein without accidentally turning a sub into a 1,400-calorie meal.

Quick answer: best Firehouse Subs high-protein orders

Best overall protein-per-calorie order

Firehouse Chopped Salad with Grilled Chicken

This is the strongest order by protein efficiency. It is listed at 375 calories and 57g protein, before any separate salad dressing choice. That is an unusually strong fast-food protein return. Just remember that salad dressings are listed separately and can add anywhere from 85 calories for Light Italian to 300 calories for Honey Mustard.

Best lower-calorie salad

Firehouse Chopped Salad with Turkey

This is listed at 224 calories and 29g protein. It is one of the best choices if you want a lighter meal with real protein. Again, dressing changes the final number.

Best balanced salad

Chopped Hook & Ladder Salad

This has 264 calories and 30g protein. It is a very strong option if you want turkey, ham, and salad instead of a bread-heavy sub.

Best small sub for protein per calorie

Small Spicy Cajun Chicken Sub

This has 357 calories and 23g protein, making it one of the best small-sub choices. The Small Cajun Chicken Sub is very similar at 363 calories and 23g protein.

Best simple small chicken sub

Small Chicken Breast Sub

This has 372 calories and 23g protein. It is one of the cleanest sub-style options if you want chicken without going into the 700+ calorie medium range.

Best medium sub for protein

Medium Cajun Chicken Sub

This has 708 calories and 46g protein. It is not low-calorie, but it is one of the better medium subs if you want a real high-protein meal.

Best medium sub under 750 calories

Good choices include:

Medium Spicy Cajun Chicken Sub: 705 calories, 44g protein
Medium Cajun Chicken Sub: 708 calories, 46g protein
Medium Chicken Breast Sub: 718 calories, 43g protein
Medium Corned Beef Sub: 740 calories, 45g protein
Medium Roast Beef Sub: 740 calories, 41g protein

These are all substantial meals, but they are much easier to fit than large subs.

Best small side protein

Chili Cup or Chili Bowl

The Chili Cup has 180 calories and 11g protein, while the Chili Bowl has 300 calories and 18g protein. Chili is useful if you want protein without ordering a large sub.

Best new high-protein option

Chicken ’N’ Cheddar Rancher

The medium Chicken ’N’ Cheddar Rancher is listed on Firehouse’s official product page at 940 calories, and Allrecipes reported that the medium has 49g protein. That is high protein, but not a low-calorie choice. It is better for people prioritizing total protein than people trying to stay under 700 calories.

How this guide ranks Firehouse Subs orders

This guide ranks Firehouse Subs items by protein value, not just total protein.

The formula is:

Protein score = grams of protein per 100 calories

Examples:

Firehouse Chopped Salad with Grilled Chicken

375 calories
57g protein
About 15.2g protein per 100 calories

Medium Cajun Chicken Sub

708 calories
46g protein
About 6.5g protein per 100 calories

Medium Smokehouse Beef & Cheddar Brisket Sub

890 calories
31g protein
About 3.5g protein per 100 calories

The brisket sub has protein, but it is not nearly as protein-efficient as the chicken salad or Cajun Chicken Sub. That is why “high protein” and “best high-protein order” are not always the same thing.

Calories are not the only issue. Sodium matters too. The FDA lists 2,300mg sodium as the Daily Value and says 20% DV or more is considered high for a nutrient. Many Firehouse Subs items can take up a large share of a day’s sodium in one meal.

Firehouse Subs high-protein orders ranked

1. Firehouse Chopped Salad with Grilled Chicken

Calories: 375
Protein: 57g
Best for: best protein per calorie

This is the best high-protein Firehouse Subs order.

It gives a huge amount of protein for fewer than 400 calories before dressing. That is much stronger than almost every sub on the menu. It is also lower in carbs than a bread-based order, which makes it easier to fit if you are trying to keep calories controlled.

Why it works:

57g protein
375 calories
No sub roll
More vegetables than most sub orders
Better protein-per-calorie value than medium or large subs

Best order:

Firehouse Chopped Salad with Grilled Chicken, dressing on the side.

Best dressing move:

Use Light Italian if calories matter.

The Light Italian dressing is listed at 85 calories, while Honey Mustard is 300 calories, Oil & Vinegar is 251 calories, and Peppercorn Ranch is 188 calories. That means dressing can completely change the meal.

Watch out for:

Dressing calories
Sodium
Assuming “salad” means the dressing is free
Adding chips or a cookie

2. Firehouse Chopped Salad with Turkey

Calories: 224
Protein: 29g
Best for: lighter high-protein meal

This is the best lighter Firehouse Subs order.

It gives 29g protein for only 224 calories before dressing. It is not as high in total protein as the grilled chicken salad, but it is one of the easiest Firehouse meals to fit into a lower-calorie day.

Why it works:

Under 250 calories before dressing
29g protein
5g fiber
No sub bread
Easy to customize

Best order:

Firehouse Chopped Salad with Turkey, Light Italian on the side.

If you need more food:

Add a Chili Cup or choose the Chopped Hook & Ladder Salad instead.

Watch out for:

Dressing
Sodium
Not being full enough if this is your only meal

The Firehouse Chopped Salad with Turkey is listed at 224 calories, 29g protein, and 1,022mg sodium.

3. Chopped Hook & Ladder Salad

Calories: 264
Protein: 30g
Best for: balanced salad with turkey and ham

This is another top-tier salad option.

It has slightly more calories than the turkey salad, but also a little more protein. It is a good choice if you like the classic Hook & Ladder flavor but want to avoid the sub roll.

Why it works:

30g protein
264 calories
Lower calorie than the Hook & Ladder sub
No bread
Good protein-to-calorie ratio

Best order:

Chopped Hook & Ladder Salad, dressing on the side.

For the lightest version:

Use Light Italian dressing or a small amount of dressing.

Watch out for:

Dressing
Sodium
Adding chips

The Chopped Hook & Ladder Salad is listed at 264 calories and 30g protein.

4. Firehouse Chopped Salad with Ham

Calories: 307
Protein: 31g
Best for: ham salad option

The ham salad is another strong protein choice.

It is higher in calories than the turkey and Hook & Ladder salads, but still much more protein-efficient than most subs.

Why it works:

31g protein
307 calories
No bread
Good if you prefer ham over turkey

Best order:

Firehouse Chopped Salad with Ham, dressing on the side.

Watch out for:

Sodium
Dressing
Nitrates/sodium nitrite in processed meats if that matters to your dietary preferences

The Firehouse Chopped Salad with Ham is listed at 307 calories and 31g protein.

5. Italian Chopped Salad with Grilled Chicken

Calories: 409
Protein: 39g
Best for: higher-protein salad with more flavor

This is still a strong high-protein salad, but it is heavier than the grilled chicken salad because it includes more fatty, Italian-style ingredients.

Why it works:

39g protein
409 calories
Lower-carb than subs
More satisfying than a plain salad

Best order:

Italian Chopped Salad with Grilled Chicken, dressing on the side.

Watch out for:

Higher fat than the turkey or Hook & Ladder salads
Sodium
Extra dressing

The Italian Chopped Salad with Grilled Chicken is listed at 409 calories and 39g protein.

6. Small Spicy Cajun Chicken Sub

Calories: 357
Protein: 23g
Best for: best small sub for protein value

This is the best small sub if you want protein and calories to both make sense.

It gives 23g protein for under 400 calories. Compared with most medium subs, it is much easier to fit into a normal lunch while still giving useful protein.

Why it works:

23g protein
357 calories
One of the best small sub protein scores
More satisfying than a snack
Easier to fit than a medium sub

Best order:

Small Spicy Cajun Chicken Sub.

Better customization:

Go easy on mayo or creamy sauces if calories matter.

Watch out for:

Sodium
Sauce
Adding chips or cookies

The Small Spicy Cajun Chicken Sub is listed at 357 calories and 23g protein.

7. Small Cajun Chicken Sub

Calories: 363
Protein: 23g
Best for: similar to Spicy Cajun, slightly less spicy

This is nearly tied with the Small Spicy Cajun Chicken Sub.

It has the same 23g protein, only 6 more calories, and a similar overall protein value. Choose this if you want the Cajun chicken profile without the spicy version.

Why it works:

23g protein
363 calories
Good small-sub option
Stronger protein value than many classic subs

Best order:

Small Cajun Chicken Sub.

Watch out for:

Creamy sauces
Sodium
Side choices

The Small Cajun Chicken Sub is listed at 363 calories and 23g protein.

8. Small Chicken Breast Sub

Calories: 372
Protein: 23g
Best for: simple chicken sub

The Small Chicken Breast Sub is one of the cleanest high-protein sub options.

It is not quite as calorie-efficient as the Cajun versions, but it is simple, familiar, and easier to recommend for most people.

Why it works:

23g protein
372 calories
Chicken-based
Smaller portion
Easier to fit than a medium or large

Best order:

Small Chicken Breast Sub.

Better customization:

Skip mayo or use light mayo if calories matter.

Firehouse condiment listings show mayonnaise can add 101–304 calories depending on serving size, while light mayo is 36–107 calories and spicy mustard is 0 calories.

9. Small Corned Beef Sub

Calories: 373
Protein: 23g
Best for: small beef-style protein sub

The Small Corned Beef Sub has the same protein as the Small Chicken Breast Sub, with almost the same calories.

It is a good choice if you want a beef-style sub but do not want to go into large New York Steamer or brisket territory.

Why it works:

23g protein
373 calories
Better protein value than many heavier meat subs
Small enough to fit a lower-calorie day

Best order:

Small Corned Beef Sub.

Watch out for:

Sodium
Cheese and mayo
Processed meat

The Small Corned Beef Sub is listed at 373 calories and 23g protein.

10. Small Hero

Calories: 403
Protein: 24g
Best for: highest-protein small sub among common choices

The Small Hero gives 24g protein, which is one of the highest protein totals among the small subs.

It is slightly over 400 calories, but still reasonable compared with the medium and large versions.

Why it works:

24g protein
403 calories
More protein than many small subs
Good if you want a meatier sub

Best order:

Small Hero.

Watch out for:

Sodium
Multiple meats
Cheese and condiments
Saturated fat

The Small Hero is listed at 403 calories and 24g protein.

11. Small Roast Beef Sub

Calories: 373
Protein: 21g
Best for: simple roast beef option

The Small Roast Beef Sub is another reasonable sub choice.

It is not as protein-efficient as the small chicken or corned beef subs, but it is still a solid small sub under 400 calories.

Why it works:

21g protein
373 calories
Simple beef option
Lower calorie than many specialty subs

Best order:

Small Roast Beef Sub.

Watch out for:

Cheese
Mayo
Sodium

The Small Roast Beef Sub is listed at 373 calories and 21g protein.

12. Small New York Steamer Sub

Calories: 362
Protein: 20g
Best for: Reuben-style craving without medium calories

The New York Steamer is not the leanest sub, but the small version is manageable.

It gives 20g protein for 362 calories. If you love pastrami/corned beef-style sandwiches, the small version is the way to keep the order under control.

Why it works:

20g protein
362 calories
Lower-calorie way to get the New York Steamer flavor
Better than a medium or large if calories matter

Best order:

Small New York Steamer Sub.

Watch out for:

Sodium
Cheese
Mayo or dressing
Upgrading to medium or large

The Small New York Steamer is listed at 362 calories and 20g protein, while the medium is 725 calories and 40g protein.

13. Small Pastrami Sub

Calories: 363
Protein: 20g
Best for: pastrami option under 400 calories

This is another solid small-sub order.

It is not as strong as the chicken or salad options, but it is a reasonable way to get a pastrami-style meal without going too large.

Why it works:

20g protein
363 calories
Under 400 calories
Satisfying if you want pastrami

Best order:

Small Pastrami Sub.

Watch out for:

Sodium
Fat
Cheese and condiments

The Small Pastrami Sub is listed at 363 calories and 20g protein.

14. Medium Cajun Chicken Sub

Calories: 708
Protein: 46g
Best for: best medium sub protein value

This is probably the best medium sub if you want a full-size high-protein Firehouse meal.

It is over 700 calories, so it is not light. But it gives 46g protein, which is strong for a fast-casual sandwich.

Why it works:

46g protein
Better protein value than many medium subs
More filling than a small
Good if this is your main meal

Best order:

Medium Cajun Chicken Sub.

Better customization:

Use lighter condiments if calories matter.

Watch out for:

Sodium
Mayo
Cheese
Adding chips or cookie

The Medium Cajun Chicken Sub is listed at 708 calories and 46g protein.

15. Medium Spicy Cajun Chicken Sub

Calories: 705
Protein: 44g
Best for: spicy medium sub

This is nearly as strong as the Medium Cajun Chicken Sub.

It has slightly fewer calories but 2g less protein. If you prefer the spicy version, it is still one of the better medium subs.

Why it works:

44g protein
705 calories
Strong protein value
Full meal

Best order:

Medium Spicy Cajun Chicken Sub.

Watch out for:

Sodium
Spicy tolerance
Creamy condiments

The Medium Spicy Cajun Chicken Sub is listed at 705 calories and 44g protein.

16. Medium Chicken Breast Sub

Calories: 718
Protein: 43g
Best for: simple medium chicken option

The Medium Chicken Breast Sub is a straightforward high-protein order.

It is not as protein-dense as the medium Cajun version, but it is still a solid choice if you want chicken and do not want a salad.

Why it works:

43g protein
Full meal
Chicken-based
Easier to customize than some specialty subs

Best order:

Medium Chicken Breast Sub, light mayo or no mayo if calories matter.

Watch out for:

Mayo
Cheese
Bread calories
Sodium

The Medium Chicken Breast Sub is listed at 718 calories and 43g protein.

17. Medium Corned Beef Sub

Calories: 740
Protein: 45g
Best for: high-protein beef-style medium sub

This is one of the better medium meat subs for protein.

It gives 45g protein for 740 calories. It is not exactly light, but it is a strong protein meal.

Why it works:

45g protein
Good medium-sub protein return
More protein than many turkey or ham options

Best order:

Medium Corned Beef Sub.

Watch out for:

Sodium
Processed meat
Cheese and condiments

The Medium Corned Beef Sub is listed at 740 calories and 45g protein.

18. Medium Hero

Calories: 799
Protein: 48g
Best for: high-protein medium sub if calories are less strict

The Medium Hero has one of the highest protein totals among the medium subs, but it also approaches 800 calories.

This is a good order if protein matters more than keeping the meal under 750 calories.

Why it works:

48g protein
Very filling
Higher-protein medium sub
Better than many specialty subs for protein

Best order:

Medium Hero.

Watch out for:

Sodium
Multiple meats
Total calories
Side items

The Medium Hero is listed at 799 calories and 48g protein.

19. Medium Chicken ’N’ Cheddar Rancher

Calories: 940
Protein: 49g
Best for: new high-protein chicken-bacon-ranch option, calories less strict

This is one of the newest Firehouse Subs items and it has a big protein number.

The medium Chicken ’N’ Cheddar Rancher is listed by Firehouse at 940 calories, and Allrecipes reported the medium has 49g protein. It features grilled chicken, bacon, cheddar, buttermilk ranch, tomatoes, lettuce, onions, and mayo. That is a lot of protein, but also a lot of calories because ranch, cheddar, bacon, mayo, and bread all add up.

Why it works:

49g protein
Chicken-based
New permanent menu item
Good if you want chicken-bacon-ranch flavor

Why it is not top-ranked:

940 calories for a medium
Ranch, cheese, bacon, and mayo make it heavier
Not as protein-efficient as the salads or Cajun Chicken subs

Best order:

Chicken ’N’ Cheddar Rancher, but customize if calories matter.

Better customization:

Ask for light ranch, no mayo, or skip one creamy element.

Watch out for:

Treating it like a “lean chicken sub”
Adding chips or a drink
Sodium and fat

Best Firehouse Subs orders under 500 calories

Firehouse Chopped Salad with Turkey

224 calories, 29g protein

Best light high-protein order before dressing.

Chopped Hook & Ladder Salad

264 calories, 30g protein

Best balanced salad before dressing.

Firehouse Chopped Salad with Ham

307 calories, 31g protein

Good if you prefer ham.

Firehouse Chopped Salad with Grilled Chicken

375 calories, 57g protein

Best overall protein order before dressing.

Italian Chopped Salad with Grilled Chicken

409 calories, 39g protein

Higher-calorie salad, but still strong.

Small Spicy Cajun Chicken Sub

357 calories, 23g protein

Best small sub for protein value.

Small Cajun Chicken Sub

363 calories, 23g protein

Very close to the Spicy Cajun Chicken.

Small Chicken Breast Sub

372 calories, 23g protein

Best simple small chicken sub.

Small Corned Beef Sub

373 calories, 23g protein

Good small beef-style option.

Chili Bowl

300 calories, 18g protein

Good side or light meal.

Best overall under 500:

Firehouse Chopped Salad with Grilled Chicken

Best sub under 500:

Small Spicy Cajun Chicken Sub

Best lightest protein meal:

Firehouse Chopped Salad with Turkey

Best Firehouse Subs medium subs for protein

Medium subs are the “real meal” zone.

They are much higher-calorie than small subs, but they give substantially more protein.

Medium Cajun Chicken Sub

708 calories, 46g protein

Best overall medium sub by protein value.

Medium Spicy Cajun Chicken Sub

705 calories, 44g protein

Very strong spicy option.

Medium Chicken Breast Sub

718 calories, 43g protein

Best simple medium chicken option.

Medium Corned Beef Sub

740 calories, 45g protein

Strong beef-style protein order.

Medium Hero

799 calories, 48g protein

High protein, but higher calories.

Medium Roast Beef Sub

740 calories, 41g protein

Good roast beef option.

Medium New York Steamer Sub

725 calories, 40g protein

Good protein, but watch sodium and fat.

Best medium sub:

Medium Cajun Chicken Sub

Best medium sub if you want the most protein under 800 calories:

Medium Hero

Best medium chicken option:

Medium Cajun Chicken or Medium Spicy Cajun Chicken

Best Firehouse Subs orders by goal

If you want the best protein per calorie

Choose:

Firehouse Chopped Salad with Grilled Chicken

Why:

It has 375 calories and 57g protein before dressing.

If you want the lightest high-protein meal

Choose:

Firehouse Chopped Salad with Turkey

Why:

It has 224 calories and 29g protein before dressing.

If you want the best small sub

Choose:

Small Spicy Cajun Chicken Sub

Why:

It has 357 calories and 23g protein.

If you want the best medium sub

Choose:

Medium Cajun Chicken Sub

Why:

It has 708 calories and 46g protein.

If you want the highest-protein medium sub

Choose:

Medium Hero or Medium Chicken ’N’ Cheddar Rancher

The Medium Hero has 48g protein for 799 calories. The newer Chicken ’N’ Cheddar Rancher has 49g protein but 940 calories, so the Hero is the more calorie-efficient of the two based on the available data.

If you want a side or small meal

Choose:

Chili Bowl

Why:

It has 300 calories and 18g protein. The Chili Cup has 180 calories and 11g protein.

If you want vegetarian

Choose:

Firehouse Chopped Salad without Meat if you want a very light option, or Small Veggie Sub if you want a real sub.

The meatless chopped salad has 125 calories and 10g protein before dressing, while the Small Veggie Sub has 365 calories and 12g protein. These are not the strongest protein choices, but they are the best vegetarian-style options in the data.

Best Firehouse Subs customizations for protein and calories

1. Choose salad if protein per calorie matters most

The salads destroy the subs on protein efficiency.

A Firehouse Chopped Salad with Grilled Chicken gives 57g protein for 375 calories, while even the best small subs usually give about 23g protein for 350–380 calories.

Best move:

Order the grilled chicken salad with dressing on the side.

2. Use small subs when calories matter

Small subs are often the best way to enjoy Firehouse without overshooting.

Examples:

Small Spicy Cajun Chicken: 357 calories, 23g protein
Small Cajun Chicken: 363 calories, 23g protein
Small Chicken Breast: 372 calories, 23g protein
Small Corned Beef: 373 calories, 23g protein
Small Hero: 403 calories, 24g protein

These are much easier to fit than medium subs, which often range from about 700 to 900 calories.

3. Skip or reduce mayo

Mayo is one of the easiest calorie traps.

Firehouse condiment listings show mayonnaise ranges from 101 to 304 calories, depending on serving size. Light mayonnaise ranges from 36 to 107 calories, and spicy mustard is listed at 0 calories.

Best order phrase:

“Light mayo”

or

“No mayo, mustard instead.”

This is especially useful on subs like Chicken Breast, Turkey, Hook & Ladder, Club, and Chicken ’N’ Cheddar Rancher.

4. Be careful with ranch and creamy spreads

Peppercorn Ranch is listed at 47–141 calories as a sub condiment, and the Zesty Pepperoncini Tzatziki Spread is listed at 157–470 calories depending on size. Salad Peppercorn Ranch dressing is 188 calories.

Best move:

Use ranch or creamy sauces lightly, or ask for them on the side.

5. Do not add chips by default

Many chip options are 190–320 calories, while Oven Baked Lay’s options are around 130–140 calories. A pickle spear is only 5 calories.

Better sides:

Pickle spear

Chili Cup

Water or zero-calorie drink

If you want chips:

Choose baked chips and skip the cookie.

6. Avoid turning a good order into a combo

A Small Spicy Cajun Chicken Sub can be a reasonable order.

Add chips, a cookie, and a sugary drink, and it is no longer the same meal.

Good formula:

Small high-protein sub + water + pickle

Better formula:

Grilled chicken salad + light dressing + water

Firehouse Subs items to be careful with

Smokehouse Beef & Cheddar Brisket Sub

This sounds protein-heavy, but it is not protein-efficient.

The Small Smokehouse Beef & Cheddar Brisket has 445 calories and only 15g protein. The medium has 890 calories and 31g protein. That is weak compared with the Small Chicken Breast Sub or grilled chicken salad.

Better:

Small Chicken Breast Sub or Medium Cajun Chicken Sub.

Tuna Sub

Tuna sounds healthy, but Firehouse’s Tuna Sub is much heavier than many people expect.

The Small Tuna Sub has 456 calories and 20g protein, and the medium has 906 calories and 39g protein. It is not the worst order, but it is weaker than the chicken subs and salads for protein per calorie.

Better:

Firehouse Chopped Salad with Grilled Chicken or Small Chicken Breast Sub.

Veggie Sub

The Veggie Sub can be the right choice for personal reasons, but it is not a high-protein choice.

The Small Veggie Sub has 365 calories and 12g protein, while the Small Chicken Breast Sub has 372 calories and 23g protein. Similar calories, very different protein.

Better for vegetarian protein:

Firehouse Chopped Salad without Meat, then add protein elsewhere in the day.

Pepperoni Pizza Meatball Sub

This is one of the heaviest options.

The Small Pepperoni Pizza Meatball Sub has 678 calories and 27g protein, while the medium has 1,246 calories and 49g protein. It has protein, but the calories and fat are very high.

Better:

Small Spicy Cajun Chicken Sub or Chili Bowl plus salad.

Large subs

Large subs can have huge protein numbers, but they are often very large calorie commitments.

For example:

Large Cajun Chicken: 1,170 calories, 85g protein
Large Turkey Bacon Ranch: 1,443 calories, 80g protein
Large Pepperoni Pizza Meatball: 1,915 calories, 76g protein
Large Tuna: 1,542 calories, 71g protein

These can work if split into two meals, but they are usually not the best one-sitting choice for most people.

Better:

Order small or medium, or split a large.

Best order formulas

Formula 1: Best overall protein meal

Order:

Firehouse Chopped Salad with Grilled Chicken + Light Italian dressing on the side

Approximate result:

375 calories before dressing
57g protein
460 calories if you use the full Light Italian dressing

Why it works:

This is the strongest protein-per-calorie meal at Firehouse.

Formula 2: Best light high-protein meal

Order:

Firehouse Chopped Salad with Turkey + Light Italian dressing on the side

Approximate result:

224 calories before dressing
29g protein
309 calories if you use the full Light Italian dressing

Why it works:

It is light, high-protein, and easier to fit than most subs.

Formula 3: Best small sub meal

Order:

Small Spicy Cajun Chicken Sub + water + pickle spear

Approximate result:

357 calories for the sub
23g protein
5 calories for pickle spear

Why it works:

It gives you a real Firehouse sub experience without going into medium-sub calories.

Formula 4: Best medium sub meal

Order:

Medium Cajun Chicken Sub + water

Approximate result:

708 calories
46g protein

Why it works:

This is one of the best medium subs if protein matters and this is your main meal.

Formula 5: Best high-protein beef-style meal

Order:

Medium Corned Beef Sub + water

Approximate result:

740 calories
45g protein

Why it works:

It gives a strong protein total without going as high as many large or specialty subs.

Formula 6: Best lower-calorie side protein

Order:

Chili Cup

Approximate result:

180 calories
11g protein

Bigger version:

Chili Bowl

300 calories
18g protein

Why it works:

Good add-on if you want more protein without ordering a larger sub.

Formula 7: Best “new item” protein meal

Order:

Chicken ’N’ Cheddar Rancher, customized

Suggested customizations:

Light ranch
No mayo
Add vegetables
Skip chips and cookie

Why it works:

It has a large protein number, but the base medium is still 940 calories. Customize it if you want the chicken-bacon-ranch flavor without stacking every creamy element.

Common mistakes when ordering high-protein at Firehouse Subs

Mistake 1: Only looking at total protein

Large subs can have huge protein numbers, but they also bring huge calories.

A Large Cajun Chicken Sub has 85g protein, but it also has 1,170 calories. That may fit some people, but it is not automatically better than a grilled chicken salad with 57g protein for 375 calories.

Mistake 2: Assuming tuna is always a lean choice

The Small Tuna Sub has 456 calories and 20g protein, while the Small Chicken Breast Sub has 372 calories and 23g protein. The chicken sub gives more protein for fewer calories.

Mistake 3: Treating salads as calorie-free after dressing

The salad itself may be excellent. The dressing can change the meal.

Honey Mustard dressing is listed at 300 calories, Oil & Vinegar at 251 calories, Peppercorn Ranch at 188 calories, and Light Italian at 85 calories.

Mistake 4: Keeping mayo by default

Mayo can add a lot of calories. Firehouse lists mayonnaise at 101–304 calories, while light mayo is 36–107 calories and spicy mustard is 0 calories.

Mistake 5: Adding chips and cookies automatically

A good high-protein sub can be reasonable. Add chips and a cookie, and the meal changes fast. Firehouse’s sides list includes many chips around 190–320 calories, cookies around 290–330 calories, and brownies at 430 calories.

Mistake 6: Ignoring sodium

Firehouse is a sub chain. Subs, deli meats, cheese, pickles, sauces, and dressings can all be sodium-heavy. The FDA sodium Daily Value is 2,300mg, and many Firehouse orders can use a large share of that in one item.

What this does not mean

This article does not mean:

Firehouse Subs is automatically healthy.
The highest-protein item is always the best item.
Salads are automatically low-calorie after dressing.
Subs are bad.
Mayo is bad.
Cheese is bad.
Large subs are bad.
Everyone should order chicken.
Calories are the only thing that matters.
Protein is the only thing that matters.
Sodium does not matter.
These numbers will be exact at every location.
U.S. and Canadian menus are identical.

It means this:

If you want the best high-protein Firehouse Subs order, start with the grilled chicken salad or turkey salad. If you want a sub, choose small chicken-based subs for calories or medium Cajun/Chicken subs for bigger protein. Control mayo, ranch, dressing, chips, cookies, and sugary drinks.

FAQ

What is the best high-protein order at Firehouse Subs?

The best overall high-protein order is the Firehouse Chopped Salad with Grilled Chicken, listed at 375 calories and 57g protein before dressing. Use dressing on the side, because dressings can add 85 to 300 calories.

What is the best Firehouse Subs order under 500 calories?

The best protein pick under 500 calories is the Firehouse Chopped Salad with Grilled Chicken. If you want a sub, choose the Small Spicy Cajun Chicken Sub, Small Cajun Chicken Sub, or Small Chicken Breast Sub.

What is the best small Firehouse sub for protein?

The Small Spicy Cajun Chicken Sub is one of the best, with 357 calories and 23g protein. The Small Cajun Chicken Sub is very close at 363 calories and 23g protein.

What is the best medium Firehouse sub for protein?

The Medium Cajun Chicken Sub is one of the best medium choices, with 708 calories and 46g protein. The Medium Spicy Cajun Chicken Sub is also strong at 705 calories and 44g protein.

Is the Chicken ’N’ Cheddar Rancher high-protein?

Yes. The medium has been reported at 49g protein, but Firehouse’s official product listing shows the medium at 940 calories, so it is high-protein but not low-calorie.

Is Firehouse Subs tuna a good high-protein choice?

It has protein, but it is not one of the best protein-per-calorie choices. The Small Tuna Sub has 456 calories and 20g protein, while the Small Chicken Breast Sub has 372 calories and 23g protein.

Are Firehouse Subs salads good for protein?

Yes, especially the grilled chicken salad, turkey salad, and Hook & Ladder salad. The grilled chicken salad is listed at 57g protein, the turkey salad at 29g protein, and the Hook & Ladder salad at 30g protein, before dressing.

What Firehouse dressing is lowest in calories?

Of the listed salad dressings, Light Italian is the lowest-calorie option at 85 calories. Honey Mustard is much higher at 300 calories.

What is the best Firehouse side for protein?

The Chili Bowl is useful, with 300 calories and 18g protein. The Chili Cup has 180 calories and 11g protein.

Should I order small, medium, or large at Firehouse Subs?

For most people, small is best if calories matter, medium is best if you want a high-protein meal, and large is best only if you plan to split it or have a very high calorie target. Many large subs exceed 1,100 calories.

Are Firehouse Subs nutrition numbers exact?

No. Nutrition can vary by menu version, location, country, bread, condiments, cheese, portioning, and customization. Use the Firehouse app or nutrition calculator for your exact order.

Final takeaway

Firehouse Subs has plenty of high-protein options, but the best orders are not always the biggest subs.

The strongest picks are:

Firehouse Chopped Salad with Grilled Chicken: 375 calories, 57g protein
Firehouse Chopped Salad with Turkey: 224 calories, 29g protein
Chopped Hook & Ladder Salad: 264 calories, 30g protein
Firehouse Chopped Salad with Ham: 307 calories, 31g protein
Italian Chopped Salad with Grilled Chicken: 409 calories, 39g protein
Small Spicy Cajun Chicken Sub: 357 calories, 23g protein
Small Cajun Chicken Sub: 363 calories, 23g protein
Small Chicken Breast Sub: 372 calories, 23g protein
Small Corned Beef Sub: 373 calories, 23g protein
Medium Cajun Chicken Sub: 708 calories, 46g protein
Medium Spicy Cajun Chicken Sub: 705 calories, 44g protein
Medium Chicken Breast Sub: 718 calories, 43g protein
Chili Bowl: 300 calories, 18g protein

The simplest ordering rule:

Choose grilled chicken salad for the best protein per calorie. Choose a small chicken sub if calories matter. Choose a medium Cajun Chicken or Chicken Breast sub if you want a bigger protein meal. Use dressing on the side, go light on mayo or ranch, skip chips and cookies, and drink water or a zero-calorie beverage.

For most people, the best everyday Firehouse Subs order is:

Firehouse Chopped Salad with Grilled Chicken, Light Italian on the side.

If you want a sub:

Small Spicy Cajun Chicken Sub.

If you want a full high-protein meal:

Medium Cajun Chicken Sub.

That is how to make Firehouse Subs work for protein without pretending every hot sub is automatically macro-friendly.