25 FREE TOOLS · ◷
Fitness & sport calculators
Training pace, race times and practical activity calculations.
Pace, splits & race time
Translate distances and times into comparable pace targets.
Explore topic ↗9 calculatorsTraining quantities
Summarise sessions, volume and descriptive workload changes.
Explore topic ↗1 calculatorsHeart-rate estimates
Explore rough age-predicted exercise intensity ranges.
Explore topic ↗All fitness & sport calculators
Running Pace Calculator
Calculate average running pace from distance and elapsed minutes.
Race Time Calculator
Estimate completion time at a chosen constant pace.
Running Speed Calculator
Convert a kilometre pace to average speed.
Cycling Cadence Speed Calculator
Estimate bicycle speed from cadence, gear ratio and wheel circumference.
Swimming Pace Calculator
Calculate average swim time per 100 metres.
Workout Volume Calculator
Calculate total lifted load for equal-weight repetitions across sets.
Step Distance Calculator
Estimate distance from step count and average step length.
Lap Count Calculator
Find the number of laps needed to reach a target distance.
Race Split Calculator
Find target time per equal-distance split at a constant pace.
Training Time Calculator
Add equal training sessions into a weekly time total.
Walking Time Calculator
Estimate walking time for a chosen distance and average speed.
Rowing Split Calculator
Calculate average rowing time per 500 metres from total time and distance.
Track Lap Split Calculator
Find target time per lap from goal duration and race distance.
Interval Workout Time Calculator
Add work intervals, between-interval rests and warm-up/cool-down time.
Training Load Ratio Calculator
Compare this week’s load with a manually supplied recent weekly average.
Race Percentage Improvement Calculator
Measure the relative reduction in elapsed race time.
One Rep Max Calculator
Estimate one-repetition maximum from a submaximal lifted load and repetition count.
Session RPE Load Calculator
Record a simple session-duration and perceived-effort workload score.
Load From One Rep Max Percentage Calculator
Translate a chosen fraction of an entered maximum into a load amount.
Riegel Race Time Predictor
Estimate a different-distance race time with an explicit endurance-scaling exponent.
Running Step Length Calculator
Relate average running speed and cadence to step length.
Bicycle Gear Inches Calculator
Compare bicycle gearing through effective wheel-diameter gearing units.
Bicycle Gear Development Calculator
Find distance travelled per complete crank revolution for a bicycle gear.
Route Climbing Density Calculator
Summarise how much total climbing is present per kilometre of a route.
Target Heart Rate Calculator
Estimate adult moderate and vigorous exercise heart-rate zones using the age-predicted maximum method.
Make your inputs count
Use measured distances and elapsed times for the most useful result. Decimal minutes are not minutes-and-seconds notation: 6.5 minutes means 6 minutes 30 seconds. These tools describe a pace or training quantity rather than predicting health or performance.