Calculators Fit
Free health & fitness calculators in 6 languages
Calculators Fit launched on July 20, 2026 with 3 votes, #8,766 of 24,623 launches that month and more than 50% of that year's launches.
What it does
A free set of health, fitness and nutrition calculators: BMI, body fat, ideal weight, RMR/TDEE, calories, macros, 1RM, running pace and VO2 max. Each one explains the formula step by step and shows the result on a visual gauge — so you understand it, not just read a number. No signup, works right in the browser, in English, Español, Français, Italiano, Deutsch and हिन्दी.
Calculate your BMI with WHO categories on a visual gauge, with the math explained — one of 37 free health and fitness calculators on Calculators Fit. No signup.
Calculate BMI, body fat, calories, strength and much more — with a visual panel that shows exactly where you stand and the math laid out step by step. No sign-up. The BMI calculator divides weight by height squared to indicate whether your weight is adequate, according to the World Health Organization categories. For example, 75 kg and 1.75 m give a BMI of 24.5 — within the normal weight range (18.5 to 24.9). The Body Mass Index is a simple screening tool created by Adolphe Quetelet and adopted by the WHO. It does not measure body fat directly, but relates your weight to your height to flag whether there is excess or lack of weight. Your vote is anonymous and helps us prioritise…from calculatorsfit.com
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