Sprint Speed Calculator
A free, browser-based calculator. Runs entirely in your browser — no sign up, nothing stored.
100% FreeRuns in your browserBasic
Enter details
Distance(m)
Time
:
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.
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.
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
Is this average or top speed?
It's the average over the whole distance, including the acceleration phase.
Related tools
Tip: Enter any known values to calculate the remaining results.
All calculations run in your browser. Your inputs are never saved or transmitted.