basic

Free Fall Calculator

Fall time and impact velocity from drop height.

Compute how long an object takes to fall from a given height and the velocity it reaches just before impact, ignoring air resistance.

Daniel Oh By Daniel Oh
Reviewed by Dr. Helena Ortiz
Published Last reviewed 1 min read

Inputs

m
m/s²

Results

Enter values and click Calculate to see results.
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How to use this calculator

  1. Fill in the inputs above using the units you already have.
  2. Values update automatically as you type — no submit button needed.
  3. Hover any result row for the underlying formula and intermediate values.

Formula

Fall time t = √(2h / g); impact velocity v = g · t. g defaults to 9.81 m/s².

In depth

Compute how long an object takes to fall from a given height and the velocity it reaches just before impact, ignoring air resistance.