Training tools
Free Training Calculators & Tools
Pace charts, power zones, race predictors, and fitness calculators for running, cycling, and swimming. No sign-up required.
Pace & race times
Finish times, predictions and equivalent performances.
Pace Chart
Find your finish time at any pace for 5K, 10K, Half Marathon, Marathon, and more.
For Run
Race Time Predictor
Predict your finish time for any distance from a recent race result using the Riegel formula.
For Run
VDOT Calculator
Calculate your VDOT score from a race result to get equivalent predictions and training paces.
For Run
Swim Pace Chart
Find your finish time at any pace for pool and open water distances, from 200m to 10K. Metres and yards.
For Swim
Zones & fitness
Training zones and fitness estimates from a test or a race.
Heart Rate Zones
Calculate training zones using Standard or Karvonen methods with multiple max HR formulas.
For Run, Ride, Swim
Cycling Power Zones
Calculate FTP-based power training zones using Coggan or Polarized models. Estimate FTP from a ramp or 20-minute test.
For Ride
VO2 Max Calculator
Estimate VO2 max from a race result, Cooper test, or resting heart rate with fitness classification.
For Run
Conversions & effort
Treadmill, hills and energy.
Treadmill Converter
Convert between treadmill speed and running pace. Adjust for incline to find flat-equivalent effort.
For Run
GAP Calculator
Calculate grade-adjusted pace for hills. See what your uphill or downhill effort equals on flat ground.
For Run
Calorie Calculator
Estimate calories burned running based on your weight, distance, and pace using MET values.
For Run
Stop calculating. Start tracking.
ActivityManager connects to your watch and gives you these insights automatically — from your real training data.