Sprint Speed Calculator
Calculates sprint speed in metres per second and km/h from distance and time.
Enter details
Result
Fill in the fields to see your result.
Estimate only — real results depend on terrain, weather, fatigue, conditions and individual fitness. Not medical or coaching advice.
Before you rely on this: First-pass guide only. Verify safety-critical or regulated work against the relevant standards, your project requirements and a qualified professional.
How to use this calculator
- Enter the sprint distance (m) and your time.
- Read speed in m/s, km/h and pace per 100 m.
How it works
Speed = distance ÷ time; km/h = m/s × 3.6.
Worked example
100 m in 12.0 s. = 8.33 m/s ≈ 30.0 km/h.
Common mistakes
- Timing by hand — reaction delay adds 0.2–0.3 s, flattering short-sprint speeds.
- Comparing flying-start and standing-start times as if they were the same.
Tips
- Times are estimates only — not medical or coaching advice. Always train safely and follow event rules.
- Distances are editable: choose “Custom…” to enter your own course lengths.
Frequently asked questions
How do I convert sprint time to speed?
Speed = distance ÷ time. The tool also shows km/h and mph, so a 100 m in 12 s is about 30 km/h average.
Is this average or top speed?
It is average speed over the distance. Top speed is higher, since you accelerate from a standstill at the start.
Related tools
- Running Pace Calculator
- Track Lap Split Calculator
- Swimming Pace Calculator
- Cycling Time Calculator
- Paddling Time Calculator
- Required Bike Speed Calculator
Explore more in Health, Fitness, Nutrition & Body.
Cite this tool
Zerdly. (2026). Sprint Speed Calculator. Retrieved from https://www.zerdly.com/tools/sprint-speed-calculator/
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.