Fitness Calculators

12 free, accurate fitness calculators — calories, body composition, strength and cardio. Each works in metric or US units and updates as you type.

Strength Standards NewSee how your bench, squat and deadlift rank — Beginner to Elite, by bodyweight.
TDEE CalculatorDaily calories to lose, maintain or gainBMR CalculatorCalories you burn at complete restBMI CalculatorBody Mass Index & categoryOne-Rep Max CalculatorEstimate your 1RM & training percentagesBody Fat % CalculatorBody fat % from tape measurementsCalories Burned CalculatorCalories burned by activityIdeal Weight CalculatorIdeal body weight for your heightHealthy Weight CalculatorHealthy weight range for your heightLean Body Mass CalculatorYour fat-free body massPace CalculatorRunning & walking paceHeart Rate Zones CalculatorTarget training heart-rate zonesArmy Body Fat CalculatorTape-test body fat vs standards

Every FORMA calculator uses a recognised, published formula — Mifflin–St Jeor for BMR and daily calories, Epley for one-rep max, the U.S. Navy method for body fat, Boer for lean mass and more. Pick a calculator above to run it and read how it works, with a worked example and answers to common questions.