Unfolding one short time into speed
The 40-yard dash is a fixed unit in American football evaluation, so it survives as a bare number of seconds while how fast that actually is stays unclear. Convert the distance to metres and divide by the time and you have an average speed, and from there the time spent per yard and per metre, and equivalents at other distances. This page takes a single time and returns average speed in mph, metres per second and km/h, plus what 60 m and 100 m would take at that same average.
The distance conversion applies 1 yard = 0.9144 m, making 40 yards 36.576 m, and no rounding is applied (as of October 2026). The other distances are arithmetic under the assumption that the average speed holds throughout. Because a sprint spends its opening metres accelerating, average speed rises with distance, so a converted 100 m tends to read slower than a real race.
No grade or level is assigned. The 40-yard dash has no official grading table, and hand timing against electronic gates alone moves the number substantially. Maximal sprinting is a common setting for hamstring injuries, so warm up thoroughly before testing.
Frequently asked questions
Forty yards is short enough that acceleration dominates it. Little of the run happens near top speed, which pulls the average down, and applying that average to 100 m gives a slow figure. Treat the conversion as arithmetic at a fixed average speed.
A yard is 0.9144 m, so 40 yards is 36.576 m. This page uses that figure without rounding when it works out average speed and time per metre.
No. The 40-yard dash has no official grading table, and the timing method matters: hand timing, electronic gates and whether a start signal is used all shift the result. This page therefore converts and assigns no level.