Enter the race
Decimal seconds, not a minute clock. Blank or malformed numbers clear the answer.
Use the published wind reading: positive for tailwind, negative for headwind. Enter 0 for reported still air; blank clears the result.
Still-air estimate
Illustrative example: 100m · 10.05 s · +2 m/s.
Estimated time at 0.0 m/s.
- Recorded time
- 10.05 s
- Model minus recorded
- +0.084 s
Within the +2.0 m/s tailwind threshold.
Keep the recorded mark and reported wind when checking competition eligibility.
Read the estimate
Still-air time = recorded time + c₀ × wind + c₁ × wind × recorded time + c₂ × wind².
For 100m: c₀ = -0.0449, c₁ = 0.009459, c₂ = -0.0042.
The calculation rounds to 0.001 seconds: 10.134 s. The main estimate uses hundredths of a second; very large values use scientific notation. Display precision does not establish prediction accuracy.
Moinat et al. (2018) provide the model. Its near-sea-level data and caution about uncommon winds limit extrapolation and individual predictions.
Check the wind flag
The threshold describes only the entered reading. World Athletics rules CR31.14.4 and TR17.13 address outdoor record wind conditions and published readings; a 200m race on a 200m Standard Oval has a specific exception. Timing, measurement and other competition requirements still apply. Use the governing rules for your meet and qualification process.