Sprint Wind Correction
Convert your measured sprint time, or long jump / triple jump mark, to its still-air equivalent. Scientific models (Linthorne 1994 for sprints, Moinat, Fabius & Emanuel 2018 for jumps).
Default 0 – sea level
Sprint correction uses the empirical Linthorne (1994) model. Long jump and triple jump use the Moinat, Fabius and Emanuel (2018) coefficients: +5.8 cm in the long jump and +10.2 cm in the triple jump per +2.0 m/s. Earlier mechanistic estimates (Ward-Smith 1985) predict larger jump effects, 12 to 23 cm at +2.0 m/s, and this tool keeps the smaller data-driven figure. Altitude correction is not applied to jumps because no published coefficient exists.
Correction result
Note: this model is an empirical approximation (Linthorne 1994). Actual effect varies with athlete build, temperature and atmospheric conditions.
Reference table
Effect of winds from −2 to +2 m/s on your performance
How to use the wind correction calculator
Pick a wind-affected event
Select your sprint discipline: 100m, 200m, or hurdles. Each event has a different wind exposure factor applied by the model.
Enter your mark and wind reading
Type your measured time in seconds (e.g. 10.23) and the wind reading from the official gauge in m/s. Negative values are headwinds.
Read the still-air equivalent
The calculator returns the corrected time — what you would have run at 0.0 m/s wind, sea level. The reference table shows the full wind spectrum from −2 to +2 m/s.
Understanding wind correction
The wind correction model (Linthorne 1994) estimates how much of your sprint time is due to wind conditions. A tailwind reduces aerodynamic drag and lowers race time; a headwind increases it. The correction removes that environmental advantage so times from different conditions can be compared fairly.
The +2.0 m/s rule
World Athletics only ratifies world records and world leading marks when the wind reading is ≤ +2.0 m/s. Performances with stronger tailwinds remain valid competitively but are marked 'wind-assisted' and excluded from world all-time lists.
Does altitude help sprinters?
Yes: at high altitude the air is thinner, reducing aerodynamic drag. The correction is approximately 0.035 s per 1,000 m of elevation for the 100m (Ward-Smith 1985). Performances at Mexico City (2,240 m) or Bogotá (2,600 m) therefore carry a measurable aerodynamic advantage, though World Athletics ratifies them for world records without restriction.
Frequently asked questions
World Athletics set this threshold to ensure fair comparison between performances. A tailwind above +2.0 m/s provides a significant mechanical advantage that would make comparisons with races run in different conditions misleading.
According to the Linthorne (1994) model, a +2.0 m/s tailwind provides approximately 0.10 s of advantage for a 10-second sprinter. For comparison, the gap between Bolt's world record (9.58 s) and 9.69 s is 0.11 s.
Yes. An altitude of 1,000 m provides approximately 0.035 s of gain over 100m due to lower air density. Races in Mexico City (~2,240 m) benefit from roughly 0.08 s advantage.
An anemometer is placed at the side of the track for the 100m and hurdles (50 m from the start, at 1.22 m height). The reading is taken over 10 seconds from the start. For the 200m the measurement is taken in the finishing straight.
Yes. A 2018 data-driven study by Moinat, Fabius and Emanuel found that a +2.0 m/s tailwind adds about 5.8 cm to a long jump and 10.2 cm to a triple jump. Older mechanistic models put the effect at 12 to 23 cm, so this calculator uses the smaller empirical figure. Altitude is not corrected for jumps because no published coefficient exists.