Horsepower from 1/4 Mile Time & Speed (ET/MPH) Calculator

Use the horsepower calculator below to find out a rough estimate of what kind of horsepower a vehicle is making by entering in its quarter mile time or mile per hour.

ET Method |

Trap Method

Vehicle Weight With Driver :
Quarter Mile Elapsed Time :
Quarter Mile Trap Speed :


Please note that this is an approximate figure. Do not rely on this as 100% accurate. These methods are usually very close to a Dynojet dyno, given near perfect driving. If you want to know your actual horsepower, you will have to visit a dyno.