SumHexa — Calculate anything.

Ideal free fall

Ideal free fall: calculate a transparent estimate from the values and assumptions you provide.

Ideal free fall: calculate a transparent estimate from the values and assumptions you provide.

Both dots and commas are accepted as decimal separators.

Your inputs stay in your browser. Displayed results are rounded to a maximum of 12 significant digits.

Method and assumptions

Method version 1.0.0 · Updated

Calculate

Formula: v² = v₀² + 2gh; g = 9.80665 m/s²

Ideal free fall: calculate a transparent estimate from the values and assumptions you provide.

height
Drop height (m)
initialSpeed
Initial downward speed (m/s)

Ignores air resistance; do not use to assess real falls or safety.

Calculate with code

These short examples use the same inputs and core calculation as this tool. Adapt validation and formatting to your application.

JavaScript
const seconds = Math.sqrt(2 * 20 / 9.80665); // about 2.02 s