Building a hot rod or just trying to learn your horsepower on your normal everyday vehicle? This HP calculator will help you figure out what you have under the hood of one of your most prized possessions, your car! Below we will show you how to find your horsepower on this HP calculator. It is simple and free!
To get instant results on your vehicles horsepower, first enter in your CAR WEIGHT with DRIVER (and any other passengers that may be riding) into the HP calculator.
Next enter in the ELAPSED TIME it took to go a quarter mile.
Lastly, add in the TRAP SPEED (mph at the end of quarter mile) and click CALCULATE. Your results will be given instantly in the white box below.
In the 1700s an entrepreneur James Watt needed to show to brewers that his steam engine was better than work horses to grind the mash. They calculated how much work a horse could do in 1 minute. This is how we got the term horsepower. This measurement sold his steam engines and we still use the same measurement to this date.