Free Fall Calculator

Which quantity you are starting from; the other is found for you.

• Fall height: you know how far it drops and want the fall time and impact speed.
• Fall time: you know how long it fell and want the height.

The drop distance, in metres, when you are starting from height.

Falling four times higher takes only twice as long, since time grows with the square root of height.

The duration of the fall, in seconds, when you are starting from time.

The tool finds the height that takes this long to fall.

The gravitational acceleration for the world you are on.

Earth 9.81, Moon 1.62, Mars 3.72.