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Converters

Speed Converter

Convert between kilometers per hour, miles per hour, meters per second and knots.

Conversion factors explained belowNo live data needed

Value & units

Runs on your device

CONVERTED VALUE

Your result

Let’s calculate.

Use the Calculate button to see your result.

Review the method below for assumptions and conventions.

How to use this converter

  1. Enter speed, from, to.
  2. Select Calculate to view the result.
  3. Check the method and assumptions below before using the result.

The method, explained

Convert the input to meters per second, then divide by the target unit’s factor. One mph is 0.44704 m/s, and one knot is 1,852 meters per hour.

A WORKED EXAMPLE

100 km/h is approximately 62.137119 mph. A speed of 10 m/s equals 36 km/h.

What to keep in mind

This converts nonnegative scalar speed, not direction or acceleration. Knots use nautical miles per hour, which differ from ordinary statute miles.

Common questions

Is a knot the same as one mile per hour?

No. A knot is one nautical mile per hour. A nautical mile is 1,852 meters.

Can I convert running speed into pace?

Use Running Pace Calculator with your distance and duration. Pace is time per distance, so its relationship to speed is reciprocal.

Methodology maintained by ClarityKit. How these tools are built and checked.