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# What is the formula to convert revolutions per minute to kilometers per hour?

The formula to convert an angular velocity expressed in **revolutions per minute [rpm]** to a linear velocity expressed in **kilometers per hour [km/h]** is given by:

Where:

- is the linear velocity expressed in kilometers per hour (km/h)
- is the angular velocity expressed in revolution per minute (rpm)
- is the radius expressed in meters (m)