Vertical Jump Calculator

Your vertical jump is how far your body rises when you jump straight up. The classic wall test measures it as the difference between your standing reach and the highest point you can touch at the top of a jump. Because it is a difference, a long reach does not make the number bigger: it only raises the point you touch.

The flight-time method works from physics. A jump goes up and comes down in equal time, so height equals gravity times flight time squared, divided by eight. It needs a jump mat or slow-motion video, and it overstates the result if you tuck your legs and land with bent knees.

If you enter body weight, the tool also gives an estimate of peak power using the Sayers equation (60.7 W per cm of jump height plus 45.3 W per kg of body mass, minus 2,055 W). Power formulas disagree with each other, so use that figure to track yourself over time, not to compare yourself with other people.