Speed / Distance / Time Calculator

Solve for speed, distance, or time given the other two values.

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How It Works

Select whether to solve for speed, distance, or time.

Type the two known values (e.g., distance and time).

The missing variable is calculated instantly.

Calculate speed, distance, or time from the other two.

Toggle between US and metric units.

Time results shown in hours and minutes.

All calculations run locally in your browser.

What formula is used?

Speed = Distance ÷ Time, Distance = Speed × Time, Time = Distance ÷ Speed.

Can I use kilometers?

Yes, toggle between miles and kilometers with the unit selector.