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Firehouse Subs (US) nutrition

Calories, protein, carbs, fat and salt for 218 Firehouse Subs (US) menu items, read from the chain's own published nutrition page.

Reading this menu

The spread between the lightest and heaviest item on this menu is 5 420 kcal. That gap is usually the whole decision: the difference between two choices at the same counter is often larger than a whole extra meal elsewhere in the day.

Salt is worth a second look. An adult reference intake is 6 g of salt a day, so an item carrying 3 g has used half of it before anything else you eat.

Source: Firehouse Subs (US) published nutrition · checked 2026-09-22

Per-item nutrition published by Firehouse Subs US for its ordering menu (https://www.firehousesubs.com/menu). The site reads its menu from its own Sanity CMS dataset (project czqk28jt, dataset prod_fhs_us) through the public, unauthenticated GROQ endpoint on Sanity's API CDN; we fetch that same endpoint. Values are each item's published facts per portion as served (nutritionWithModifiers, or the item's own nutrition object when nutritionWithModifiers carries calories only and both publish the same calories); salt is derived from the published sodium (mg x 2.5). The chain's own nutrition guide is hosted by Nutritionix (linked from /nutritional-information); it is not fetched.