Miles per Hour to 40-Yard Dash Time

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Miles per Hour to 40-Yard Dash Time Calculation:

  • mph =
    Miles per Hour

    Average speed in miles per hour.

  •  s =
    Dash Seconds

    Theoretical time to cover 40 yards at that constant speed.

  • Decimals

    Choose the number of decimals to show in your answer. This is also known as significant figures. Select an appropriate amount of significant figures based on the precision of the input numbers.

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Miles per Hour to 40-Yard Dash Time Formula

A 40-yard dash covers 120 feet, or 40 yards. If the runner held a constant average speed in miles per hour, the dash time follows directly from distance divided by speed.

seconds = (40 x 3600) / (mph x 1760)

seconds = 900 / (11 x mph)

This is a flat-speed estimate. Real sprint times are affected by acceleration and technique.

Live Diagram

The lane shows how the estimated dash time changes as the speed input changes.

Miles per Hour to 40-Yard Dash Time Variables

Miles per Hour
The average speed used for the estimate.
Dash Seconds
The time required to cover 40 yards if that speed were held across the whole dash.

How the Calculation Works

  1. Use the fixed distance of 40 yards.
  2. Convert the input speed into yards per second.
  3. Divide the distance by the speed to get total seconds.

Miles per Hour to 40-Yard Dash Time Example

What 40-yard dash time corresponds to 16 mph?

  • seconds = 900 / (11 x 16)
  • seconds = 900 / 176
  • seconds = 5.11

At a flat speed of 16 mph, the theoretical 40-yard dash time is about 5.11 seconds.