Free health & restaurant calculators
Get a useful estimate. Understand the assumptions. Bring your everyday food log together with BiteCal.
7 health & nutrition calculators
BMR Calculator
Estimate resting energy with metric or imperial units.
Use free calculator →TDEE Calculator
Estimate daily energy needs from resting energy and activity.
Use free calculator →BMI Calculator
Calculate BMI from weight and height, with adult screening categories and clear limits.
Use free calculator →Calorie Calculator
Estimate maintenance calories and compare modest deficit or surplus scenarios using your activity level.
Use free calculator →Calorie Deficit Calculator
Compare a selected daily calorie deficit with estimated maintenance, without promising a weight-loss date.
Use free calculator →Macro Calculator
Turn a calorie scenario into grams of protein, carbohydrate and fat. Adjust the protein factor rather than following a hidden ratio.
Use free calculator →Protein Calculator
Estimate daily protein in grams from body weight and a selected reference factor, then see a practical per-meal split.
Use free calculator →13 restaurant nutrition calculators
Search reference foods, choose exact serving multiples and see your combined calories, protein, carbs and fat. No signup required.
Subway Nutrition Calculator
Build a meal from 732 reference entries.
Build your meal →Chipotle Nutrition Calculator
Build a meal from 162 reference entries.
Build your meal →Pizza Hut Nutrition Calculator
Build a meal from 419 reference entries.
Build your meal →Texas Roadhouse Nutrition Calculator
Build a meal from 198 reference entries.
Build your meal →Marco’s Pizza Nutrition Calculator
Build a meal from 100 reference entries.
Build your meal →Firehouse Subs Nutrition Calculator
Build a meal from 139 reference entries.
Build your meal →Blaze Pizza Nutrition Calculator
Build a meal from 18 reference entries.
Build your meal →Taco Bell Nutrition Calculator
Build a meal from 225 reference entries.
Build your meal →Flame Broiler Nutrition Calculator
Build a meal from 27 reference entries.
Build your meal →Mellow Mushroom Nutrition Calculator
Build a meal from 239 reference entries.
Build your meal →IHOP Nutrition Calculator
Build a meal from 475 reference entries.
Build your meal →Wawa Nutrition Calculator
Build a meal from 581 reference entries.
Build your meal →KFC Nutrition Calculator
Build a meal from 341 reference entries.
Build your meal →Put the numbers into a real meal
What makes these BiteCal tools useful?
Start with a free calculation, then use BiteCal to make the daily routine easier: photograph your meal, review calorie and macro estimates, and save your food diary. Tools show their calculation basis; restaurant references retain the serving description. The website calculators run without an account and do not send your measurements or meal selections to a server.
Restaurant entries are secondary references retrieved from Eato on 22 October 2026. Markets, recipes and availability vary. They are not an official current menu, an allergen check or evidence of a restaurant partnership.
OUR PICK FOR PHOTO-FIRST MEAL LOGGING
Less manual entry. A meal diary you can review.
Start with BiteCal when you want to make everyday food logging easier. Photograph your meal, review detected foods and estimated calories, protein, carbs and fat, then save your daily diary entry. Check portions and hidden additions before saving.
Use our free website calculators to understand the numbers, then bring the routine into BiteCal. Photo estimates are a starting point, with the review step keeping you in control.
BiteCal is free to download with in-app purchases. Full access requires an active subscription; current options and renewal terms are shown before purchase. Calculators on this website are free and need no account.
See how BiteCal works →