4.6 · 21,000+ reviews · 2M+ downloadsFitness Calculators
Know your numbers.Train with purpose.
Free calculators for heart rate zones, Zone 2, max heart rate, cycling FTP, calories burned, and your one rep max. The heart rate zones and power zones match what you'll see in FITIV Pulse.
Heart Rate Zones
All five training zones in bpm, from your age or a max heart rate you've measured.
Open calculatorFTP & Power Zones
Seven cycling power zones in watts from your FTP or a test result, plus watts per kilogram.
Open calculatorCalories Burned
Estimate a workout's calories from your average heart rate, time, age, sex, and weight.
Open calculatorOne Rep Max
Estimate your 1RM from any set, plus the weight you could lift at common rep counts.
Open calculatorSee your zones in every workout
Works with the devices you already own.
