Running Calculators
Essential running calculators for recreational runners and competitive athletes. Calculate race pace, marathon splits, predict finish times, convert steps to distance, and plan training paces.
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All running calculators
Magic Mile Calculator
Use Jeff Galloway's Magic Mile to predict 5K, 10K, and marathon race times.
Marathon Pace Calculator
Calculate pace per mile/km needed to finish a marathon in your target time.
Pace Calculator
Calculate running pace, time, or distance from any two known values.
Race Predictor Calculator
Predict finish times for any race distance from a recent race result.
Race Time Improvement Calculator
Calculate how much time you save with a percentage improvement in running fitness.
Running Split Calculator
Calculate even and negative splits for any race distance and target time.
Steps to km Calculator
Convert steps to kilometres using stride length estimated from your height.
Steps to Miles Calculator
Convert steps to miles using stride length estimated from your height.
Stride Length Calculator
Calculate your running stride length from height and step count.
Training Pace Calculator
Calculate optimal training paces for easy, tempo, and interval runs from your race time.
VO₂ Max Runner Calculator
Estimate VO₂ max from your 12-minute run distance (Cooper Test).
Frequently asked questions
A:Pace = Total time ÷ Distance. For example, a 30-minute 5K = 6 minutes per km or 9:39 per mile.
A:Use a recent race result (e.g. 5K or 10K time) in our Race Predictor Calculator to estimate marathon finish time using the Riegel formula.
A:Stride length is the distance covered in one full gait cycle (two steps). Average running stride is roughly 1.5–1.7 times your height.