Athletics Tools
Calculators and tools for athletes, coaches and enthusiasts
Pace Calculator
Convert your pace, calculate split times and predict your finish times
VMA / MAS & VO2max Calculator
Estimate your MAS (VMA) and VO2max, then get your training pace zones from a field test or race result.
Race Time Predictor
Predict your race times across all distances from a single reference performance
World Athletics Points Calculator
Convert performances to World Athletics points using the official Spiriev scoring tables
Age Grading Calculator
Calculate your age-graded percentage and compare performances regardless of age
Sprint Wind Correction
Convert your measured sprint time to still-air, sea-level equivalent. Scientific model (Linthorne 1994).
Heart Rate Zones Calculator
Calculate your 5 training zones with the Karvonen or % max HR method
Decathlon & Heptathlon Calculator
Score every event of a decathlon or heptathlon with the official IAAF tables
Am I Fast? — World Percentile
Compare your performance against the personal bests of 800,000+ real athletes