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Everything Keto at Firehouse Subs

Eating out on a ketogenic diet can be tough! That’s why we’ve crunched the official data and put together this list of Firehouse Subs keto options. This tool is interactive so you can change what counts 'keto-friendly' depending on your own dietary requirements.

As a default we're using 20g net carbohydrates as the maximum for keto-friendly options. When you are tracking your diet for keto, you'll want to keep track of your net carbohydrate intake, which equals total carbohydrates minus fiber.

For foods with slightly more carbs you might be interested in low-carb options at Firehouse Subs.

Net Carbohydrate Limit

Kids Beverages

9010g10g0g7g2g10mg105mg10g
10024g24g0g0g0g0mg15mg2g
15025g26g1g7g3g10mg170mg23g

Sides & Chips

51g1g0g0g0g0mg240mg0g
1407g9g2g1g12g5mg180mg5g
459g9g0g0g1g0mg53mg4g
18010g13g3g11g9g25mg510mg3g
16019g20g1g2g8g0mg350mg1g
21020g22g2g3g12g0mg180mg2g
21020g22g2g3g13g0mg120mg1g
24021g23g2g3g16g0mg250mg1g
24021g23g2g3g15g0mg240mg1g
21021g23g2g2g12g0mg230mg2g
21021g23g2g3g12g0mg200mg2g
14022g24g2g2g4g0mg220mg4g
13023g24g1g2g4g0mg270mg2g
19024g26g2g3g8g0mg180mg2g
13024g26g2g2g2g0mg150mg2g
31025g26g1g3g21g0mg500mg2g
19025g27g2g3g8g0mg180mg1g
21025g29g4g3g10g0mg310mg3g
24026g28g2g3g14g0mg360mg1g
26028g31g3g3g13g0mg320mg2g
32029g32g3g3g20g0mg320mg1g
38032g33g1g17g20g50mg1400mg2g
31041g43g2g4g15g30mg180mg27g
31042g44g2g4g15g30mg170mg26g
33042g43g1g4g16g25mg210mg25g
29043g45g2g4g11g25mg135mg25g
43060g61g1g4g20g75mg240mg38g

Salad Toppings

10g0g0g0g0g0mg233mg0g
250g1g1g0g3g0mg71mg0g
00g0g0g0g0g0mg233mg0g

Sub Sandwiches

47331g33g2g20g29g50mg1491mg8g
72546g48g2g40g41g91mg2149mg5g
74050g54g4g45g39g91mg2245mg7g
74050g54g4g41g37g81mg1941mg7g
70550g53g3g44g35g121mg2106mg4g
70851g54g3g46g34g125mg2438mg5g
83151g53g2g38g51g112mg2315mg6g
71852g56g4g43g36g110mg1992mg7g
72052g56g4g39g38g91mg2372mg9g
72353g58g5g24g45g60mg1760mg8g
80854g58g4g45g44g128mg2024mg5g
68754g60g6g38g35g66mg2025mg9g
67754g58g4g36g35g61mg1940mg9g
83455g59g4g37g51g95mg1927mg9g
89057g59g2g31g59g108mg1707mg15g
90657g61g4g39g57g83mg1844mg11g
83157g61g4g40g48g92mg2271mg10g
76859g63g4g40g40g87mg2040mg15g
71859g63g4g36g36g76mg1901mg15g
79960g64g4g48g38g92mg2335mg15g
87061g66g5g38g51g110mg1990mg17g
124662g67g5g49g88g144mg3112mg12g
71964g68g4g35g35g65mg1742mg18g
76066g70g4g37g38g71mg2002mg21g
88072g76g4g37g50g95mg2380mg17g
81776g79g3g40g36g110mg1947mg13g

Soups

34011g12g1g11g28g50mg1240mg5g
19017g17g0g8g11g55mg1190mg0g
12017g18g1g8g2g30mg1030mg3g
30017g22g5g18g15g42mg850mg5g
38023g23g0g9g29g60mg1390mg0g

Catering Menu

1005g8g3g8g5g15mg270mg3g
355g8g3g2g0g0mg15mg4g
1506g9g3g16g7g45mg620mg4g
1407g10g3g16g6g25mg630mg4g
2308g11g3g13g16g25mg470mg5g
17011g14g3g16g7g35mg540mg9g
45047g50g3g34g14g60mg1500mg13g
43048g51g3g34g12g60mg1440mg14g
55050g54g4g35g22g80mg2170mg9g
53050g54g4g39g17g80mg1690mg9g
52052g56g4g37g18g90mg1710mg11g
51052g56g4g33g18g70mg1990mg9g
49054g58g4g37g15g50mg1730mg11g
52054g58g4g25g23g50mg1230mg10g
56066g70g4g37g17g70mg1510mg23g

Cheeses

700g0g0g5g5g22mg328mg0g
1000g0g0g7g8g30mg170mg0g
1000g0g0g7g8g24mg160mg0g
1001g1g0g7g8g20mg240mg0g
1001g1g0g8g8g25mg60mg0g
1652g2g0g11g14g45mg270mg0g

Sub Meats

1620g0g0g28g5g61mg1033mg0g
500g0g0g4g4g11mg139mg0g
960g0g0g5g9g20mg368mg0g
1620g0g0g24g3g51mg729mg0g
2840g0g0g16g25g68mg703mg0g
1271g1g0g7g10g30mg503mg1g
1602g2g0g30g3g91mg891mg0g
1422g2g0g22g4g61mg1160mg2g
2634g4g0g22g16g81mg972mg2g
994g4g0g19g1g31mg728mg2g
1315g5g0g23g2g80mg602mg0g
3287g7g0g23g23g53mg632mg4g
4508g8g0g20g38g75mg950mg2g
18216g16g0g20g4g41mg790mg14g

Chopped Salads

623g5g2g5g3g8mg92mg2g
1256g11g5g10g6g16mg294mg4g
3759g14g5g57g10g159mg1687mg4g
4099g14g5g39g22g116mg1576mg5g
22410g15g5g29g7g47mg1022mg6g
26416g21g5g30g8g52mg943mg12g
30722g27g5g31g10g56mg1084mg18g

Sub Breads

19034g40g6g3g3g0mg300mg5g
24041g43g2g8g3g0mg470mg3g
24042g45g3g9g3g0mg460mg5g
44046g48g2g8g23g10mg930mg0g
40060g62g2g12g10g0mg700mg1g

Kid's Subs

25121g22g1g20g7g36mg720mg2g
22023g24g1g17g6g26mg719mg2g
35726g27g1g16g21g40mg791mg3g
26129g30g1g18g8g30mg750mg9g
43832g32g0g12g27g30mg716mg2g

Sub Toppings

50g1g1g1g0g0mg133mg0g
10g0g0g0g0g0mg233mg0g
250g1g1g0g3g0mg71mg0g
00g0g0g0g0g0mg233mg0g
31g1g0g0g0g0mg72mg0g
51g1g0g0g0g0mg72mg0g
801g4g3g1g7g0mg4mg0g
51g1g0g0g0g0mg400mg0g
31g1g0g0g0g0mg0mg0g
71g1g0g0g0g0mg340mg0g
31g1g0g0g0g0mg1mg0g
91g2g1g1g0g0mg16mg0g
101g2g1g0g0g0mg430mg0g
112g3g1g1g0g0mg3mg2g
193g4g1g1g0g0mg2mg2g
1407g9g2g1g12g5mg180mg5g

Sub Condiments

400g0g0g0g5g0mg0mg0g
00g0g0g0g0g0mg25mg0g
00g0g0g0g0g0mg0mg0g
731g1g0g0g7g20mg114mg1g
301g1g0g0g3g0mg160mg1g
181g1g0g1g1g0mg44mg0g
711g1g0g0g7g14mg149mg0g
322g2g0g0g3g0mg101mg2g
92g2g0g0g0g0mg82mg1g
2042g2g0g0g21g9mg432mg0g
2032g2g0g0g22g10mg132mg0g
942g2g0g1g9g9mg302mg1g
1903g3g0g0g21g10mg160mg0g
754g4g0g1g7g5mg64mg4g
274g6g2g1g0g0mg222mg4g
214g4g0g0g0g0mg340mg4g
3147g7g0g0g33g15mg315mg0g
288g8g0g0g0g0mg198mg6g
5112g12g0g0g0g0mg233mg10g
5413g13g0g0g0g0mg222mg12g

Salad Dressings

2510g0g0g0g28g0mg1mg0g
852g2g0g0g9g0mg510mg2g
1884g4g0g2g17g19mg604mg2g
1087g7g0g0g9g0mg341mg7g
1748g8g0g0g16g0mg928mg6g
30015g15g0g2g28g21mg256mg15g

Drinks

70g0g0g0g0g0mg12mg0g
70g0g0g0g0g0mg12mg0g
20g0g0g0g0g0mg7mg0g
00g0g0g0g0g0mg0mg0g
20g0g0g0g0g0mg7mg0g
20g0g0g0g0g0mg4mg0g
60g0g0g0g0g0mg3mg0g
60g0g0g0g0g0mg0mg0g
70g0g0g0g0g0mg12mg0g
41g1g0g0g0g0mg9mg0g
81g1g0g0g0g0mg3mg0g
41g1g0g0g0g0mg14mg0g
121g1g0g0g0g0mg3mg0g
91g1g0g0g0g0mg5mg0g
31g1g0g0g0g0mg4mg0g
151g1g0g0g0g0mg3mg0g
51g1g0g0g0g0mg4mg0g
61g1g0g0g0g0mg4mg0g
31g1g0g0g0g0mg6mg0g
101g1g0g0g0g0mg5mg0g
51g1g0g0g0g0mg20mg0g
153g3g0g0g0g0mg67mg0g
163g3g0g0g0g0mg67mg0g
13134g34g0g0g0g0mg6mg33g
13135g35g0g0g0g0mg6mg34g
13435g35g0g0g0g0mg1mg35g
13436g36g0g0g0g0mg1mg35g
22044g44g0g0g0g0mg0mg44g
22044g44g0g0g0g0mg0mg44g
18248g48g0g0g0g0mg0mg48g
23262g62g0g0g0g0mg0mg62g
23363g63g0g0g0g0mg2mg63g
26771g71g0g0g0g0mg6mg71g
26671g71g0g0g0g0mg1mg71g
26873g73g0g0g0g0mg0mg73g
29074g74g0g0g0g0mg20mg73g
29477g77g0g0g0g0mg63mg76g
29577g77g0g0g0g0mg63mg76g
30382g82g0g0g0g0mg2mg82g
30182g82g0g0g0g0mg11mg82g
33088g88g0g0g0g0mg0mg66g
33088g88g0g0g0g0mg0mg66g

The basics of ordering Keto at Firehouse Subs

  • Your best bet is to get a bunless and sauceless burger, then just ask for yellow mustard, mayo or ranch on the side.

  • Ketchup has a lot of sugar, so while it may not knock you out of ketosis, it is typically not recommended on a keto diet.

  • Water, coffee and tea are safe beverages for keto. You'll want to avoid soda completely. Diet sodas like Diet Coke, Coke Zero, and Diet Pepsi are all sugar free and keto-friendly. However, the artificial sweeteners in these drinks are known to increase sugar cravings, so we would not recommend them [Source].

  • The highest source of carbs in salads comes from croutons and dressing. Most dressings have a shocking amount of carbs.

What Counts as Keto?

Keto doesn’t necessarily mean zero carbs. A keto diet typically limits net carb intake to less than 50 grams per day—stricter versions of keto can be as low as 20 grams of net carbs a day. [Source]

What are net carbs and why do people doing keto count them instead of total carbs? Net carbs equal total carbs minus fiber, because the carbs in fiber are not digested and don’t cause the blood sugar increase that knocks you out of ketosis. [Source]

We’ve made a tool that lets you filter Firehouse Subs menu items by net carbs. By default, this tool will show menu items under 20g of net carbs. Everybody has a different ketosis threshold, but most people will need to get under 50g net carbs to reach ketosis. General advice for people starting with this diet is to start with 50g, and go lower if your body is not reaching ketosis.

If you’re trying to eat a low-carb diet rather than a keto diet, we recommend you check out the list of low-carb menu items at Firehouse Subs. How many carbs is low-carb? This depends on your weight, but is typically defined as less than 130g of carbohydrates per day [Source].

What Restaurants are Keto Friendly?

If you’re new to keto, you might be struggling with adjusting to this new way of eating. After all, it's not just a diet change, but an entire lifestyle change. Not only are your options more limited than ever, but sometimes you have to [explain what you're doing] to the people you're dining with!

Luckily in the few years alone, keto has gone from a niche diet a mainstream one. The spotlight has only grown on keto-friendly meals, with its proven track record of helping people with weight loss, as well as blood sugar control for type 2 diabetes [Source].

More and more restaurants are beginning to introduce low carb options to cater to those following a keto diet. Here are some our recommendations if you're looking for keto-friendly options at Sandwiches restaurants.

Chipotle

One of the most popular fast-casual restaurants, Chipotle offers a variety of keto-friendly options. For your entrée, you can choose from a chicken, steak, or carnitas burrito bowl with lettuce, cheese, sour cream, and guacamole. Just be sure to skip the rice and beans.

Chick-fil-A

Chick-fil-A is another great option for those following a keto diet. For your main entrée, you can choose from a grilled chicken sandwich (without the bun of course), grilled nuggets, or a Cobb salad. And don’t forget to add a side of avocado ranch dressing – it’s delicious!

Panera Bread

Panera Bread is a great place to go for a quick and healthy meal. For your main entrée, you can choose from a variety of salads, including the popular Greek salad and the chicken Caesar salad. Just be sure to ask for no croutons and skip the bread.

P.F. Chang’s

P.F. Chang’s is a great option if you’re looking for something a little more filling. For your main entrée, you can choose from a variety of chicken, steak, and shrimp dishes. Just be sure to ask for no rice.

Texas Roadhouse

Texas Roadhouse is the classic place to go when you’re craving a steak. For your main entrée, you can choose from a variety of steak, chicken, and shrimp dishes. As long as you don’t get rice you are eating very keto-friendly!

These are just a few of the many keto-friendly restaurants that are out there. Next time you’re feeling hungry, you can rest assured that you’ll be able to find a delicious and keto-friendly meal.

On our Every Keto Option At Every Fast Food Chain Index, we have keto options at restaurant. Good luck, and happy ketosis!

Frequently Asked Questions

How do I know how many carbs to eat on a ketogenic diet?

This is a common question; the answer will vary from person to person. Some people can eat 50g net carbs and maintain ketosis. Other people can't go over 25 without breaking ketosis (however this is more rare).

The point of keeping net carbs lower (say around 25g) is to get you into ketosis faster and help you adapt faster.

Keep in mind that higher activity levels mean you can go higher without breaking ketosis. This is because highly active people will have higher muscle insulin sensitivity, which will help take up glucose from the blood instead of it interrupting ketosis.

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