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.
🍎TDEE CalculatorDaily calories to lose, maintain or gain🔥BMR CalculatorCalories you burn at complete rest⚖️BMI CalculatorBody Mass Index & category🏋️One-Rep Max CalculatorEstimate your 1RM & training percentages📏Body Fat % CalculatorBody fat % from tape measurements💨Calories Burned CalculatorCalories burned by activity🎯Ideal Weight CalculatorIdeal body weight for your height✅Healthy Weight CalculatorHealthy weight range for your height💪Lean Body Mass CalculatorYour fat-free body mass🏃Pace CalculatorRunning & walking pace❤️Heart Rate Zones CalculatorTarget training heart-rate zones🎖️Army 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.