Sports & Performance
Optimize training. 1RM, race pace, and powerlifting scores.
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Marathon Pace Calculator
Find the pace, speed, and even splits for a marathon finish time.
Running Speed Calculator
Convert a running pace to km/h and mph, or convert a speed back into pace.
Wilks Score Calculator
Calculate your Wilks Score to compare powerlifting strength across weight classes
Race Time Predictor
Predict your race times for 5k, 10k, Half, and Marathon
VDOT Calculator
Calculate your VDOT score (running fitness) and get personalized training paces based on a recent race result.
Half Marathon Pace Calculator
Calculate half marathon pace, speed, and 5K splits from a finish time or target pace.
All Sports & Performance Calculators
5K Pace Calculator
Calculate 5K pace, speed, and kilometer splits from a finish time or a target pace.
10K Pace Calculator
Calculate 10K pace, speed, and kilometer splits from a finish time or target pace.
Min/km to Min/mile Converter
Convert a running pace between minutes per kilometer and minutes per mile.
Running Split Calculator
Build even kilometer or mile splits for a 5K, 10K, half, marathon, or custom distance.
RPE Calculator
Estimate 1 Rep Max and working weights based on RPE (Rate of Perceived Exertion)
Calories Burned by Activity
Estimate calories burned for running, cycling, swimming, and more
Body Shape Calculator
Identify your body shape based on bust, waist, and hip measurements
Lean Body Mass (LBM)
Calculate your Lean Body Mass (weight minus fat)
Dunk Calculator
Find out how high you need to jump to dunk a basketball based on your height and reach.
Steps to Miles Calculator
Convert steps to miles and kilometers, or miles back into steps
Running pace, speed, and race time
Strength tools live on this page. Running tools are grouped on the running calculators hub: marathon pace, half marathon pace, 5K pace, 10K pace, speed, splits, and the race time predictor.
The general pace calculator still handles any distance. Use a race page when the distance is fixed and you want splits.