Free Health Calculators

Science-backed tools to understand your body and plan your nutrition. No sign-up required.

TDEE Calculator

Find out how many calories you burn per day based on your age, weight, height, and activity level.

Calculate exactly how many calories you need to eat per day to maintain your current weight.

Find your optimal daily protein intake based on your weight, activity, and fitness goals.

Calculate your Basal Metabolic Rate — calories burned at complete rest — with 3 scientific formulas.

Find how many calories to eat to lose weight at your desired rate. Includes timeline and macro breakdown.

BasedHealth AI calculates your calories, protein, and macros automatically from a photo of your food. No manual tracking required.