This calculator will work out a new elapsed time based on a nominated horsepower increase. It is a good tool when evaluating the result that a performance upgrade will provide.
| variable | description |
| elapsed time | your current elapsed time on the 1/4 mile |
| weight | total weight of vehicle and driver, ready to run |
| additional hp | the additional flywheel horsepower from the engine |
| new elapsed time | the new elapsed time on the 1/4 mile |
| difference | the difference in seconds between your current et and new et |
| related calculators |