Free Fitness Calculators
Instant, no sign-up, built by coaches. Work out your numbers — then put them to work.
Every plan starts with honest numbers: how much you burn, how much to eat, where your body composition actually is. These calculators use the same published equations dietitians and strength coaches rely on — Mifflin-St Jeor for metabolism, the U.S. Navy method for body fat, Epley and Brzycki for strength. All free, all instant, metric and imperial. When you're ready to turn numbers into results, that's what CoachRight and the coaches who use it are for.
BMI Calculator
Body mass index with WHO categories, healthy-weight range and honest limits.
Calculate BMI →BMR Calculator
Resting calories burned per day — Mifflin-St Jeor and Katch-McArdle equations.
Calculate BMR →Calorie Calculator (TDEE)
Your daily maintenance calories, plus fat-loss and lean-gain targets.
Calculate calories →Body Fat Calculator
Estimate body-fat percentage with a tape measure — the U.S. Navy method.
Calculate body fat →Calorie Deficit Calculator
Calories to lose fat, projected weekly loss and a realistic timeline.
Plan your cut →Muscle Gain Calculator
Lean-bulk calories, protein targets and realistic monthly gain rates.
Plan your bulk →Macro Calculator
Turn your calorie target into daily protein, carb and fat grams.
Get your macros →Protein Calculator
How much protein per day for your goal, with a per-meal breakdown.
Get your protein →One Rep Max Calculator
Estimate your 1RM from any set — Epley & Brzycki plus a full %1RM table.
Calculate 1RM →Program Builder Lite
For coaches: draft a training program in minutes and print or email it — free.
Build a program →Are you a personal trainer?
Run your whole coaching business — clients, programs, nutrition, payments — in one app. 14-day free trial, no card required.
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