Free Fall Calculator

Calculate time, distance, and final speed for ideal free fall (no air resistance). Uses s = ½gt² and v = gt.

Pick what you want to calculate.
Default is Earth gravity (9.81).
Enter time if it’s known.
Enter drop height / distance.
Speed at impact (ideal case).
s = ½ g t²
v = g t
v² = 2 g s
Assumes start from rest.