Free sports calculators for running, cycling, swimming, lifting and team sports. Work out pace and splits, calories burned, one-rep max, heart-rate zones and performance stats — instant, in your browser, no signup.
Burned-calorie estimates for walking, running, cycling, swimming and more.
Estimate burpee calories by reps or by minutes.
Estimate calories burned for any activity from MET values.
Estimate calories burned from your average exercise heart rate.
Estimate elliptical calories from weight and minutes.
Find your fat burning heart rate zone and other ranges.
Estimate hiking calories from weight, time, and pack load.
Estimate jump rope calories from weight and minutes.
Estimate running calories from distance, or from time and pace.
Get a modest estimate of calories burned in a sauna.
Estimate calories burned shovelling snow by effort.
Estimate calories burned climbing stairs by pace.
Convert your step count into calories burned.
Estimate swimming calories by stroke and time.
Estimate walking calories by speed and time, or by steps.
Pace, splits, race predictions and running metrics.
Find the pace needed for a target 5K finish time.
Find the pace needed for a target 10K finish time.
Work out your finish time from distance and pace.
Find the average pace for your half marathon goal time.
Find the average pace for your marathon goal time.
Predict a race time from a recent result using the Riegel formula.
Find your cadence from steps and time, or from speed and stride.
Convert between running pace, speed, time, and distance.
Get even split times and cumulative clocks for any race.
Find your running stride from distance and steps, or speed and cadence.
Convert treadmill speed and incline into an outdoor pace.
Estimate VO2 max from the Cooper test or from running speed.
One-rep max, working weights, plate loading and program tools.
Build Wendler 5/3/1 weights from a training max.
Estimate your bench press max and list working weights.
Turn a one rep max into training weights by percentage.
Estimate your one rep max from a set you already did.
Find the plates to load on each side of the bar.
Gearing, speed, power, FTP and bike-fit calculators.
Estimate cycling calories from power, or from MET values.
Estimate road bike frame size from your inseam or height.
Find the ratio between your chainring and cassette teeth.
Estimate road speed from cadence, gearing, and wheel size.
Work out how many links your bike chain needs.
Find the cadence that a speed and gear demand.
Estimate the watts needed to hold a speed on the road.
Turn your FTP into seven training zones in watts.
Work out ride time from distance and average speed.
Estimate functional threshold power from a 20 minute test.
Convert gearing into gear inches and metres of development.
Turn watts and body mass into watts per kilogram.
Heart rate zones, thresholds, and training-load calculators.
Estimate lactate threshold heart rate from age or a time trial.
Find critical power and W prime from two hard efforts.
Measure the one minute drop in heart rate after hard effort.
Find your heart rate reserve and three Karvonen targets.
Turn an age based maximum heart rate into five training zones.
Estimate your maximum heart rate by four popular formulas.
Turn a Borg RPE score into an effort level and rough heart rate.
Check your resting heart rate against common adult ranges.
Find a Karvonen target heart rate for your chosen intensity.
Score a session with the Banister training impulse.
Estimate VO2 max from the ratio of maximum to resting heart rate.
Batting, pitching, and fielding stats calculators.
Find batting average on balls in play.
Turn hits and at-bats into a three-decimal batting average.
Convert earned runs and innings into a two-decimal ERA.
Measure how often fielders convert chances into outs.
Measure how often a batter reaches base.
Add on-base percentage and slugging into one summary.
Estimate a hitter's run contribution with Bill James formula.
Weight every hit by the bases it earns.
Compare strikeouts with walks allowed.
Track walks and hits allowed per inning pitched.
Shooting and scoring efficiency calculators.
Adjust field goal percentage for the extra value of a three.
Convert made and attempted field goals into shooting percentage.
Convert made and attempted free throws into a percentage.
Turn made and attempted threes into a shooting percentage.
Measure scoring efficiency across twos, threes, and free throws.