What is a knot, and why is it used?

A knot equals one nautical mile per hour (about 1.852 km/h) and is the standard speed unit used in aviation and maritime navigation.

How do I convert a car speed limit from km/h to mph?

Enter the km/h value and select mph as the output — for example, a 100 km/h speed limit converts to about 62.14 mph.

Yes. Wind speeds reported in knots or m/s (common in weather forecasts) can be converted to mph or km/h for easier comparison.

converters Client-Side Only

Convert velocity between m/s, km/h, mph, and knots.

From Value & Unit

To Target Unit

Converted Result

62.137Miles per hour

Formula: Multiply by 0.6214 (km/h × 0.6214 = mph)

Display Precision:

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Calculates exact velocity equivalents across SI, imperial, and nautical standards.

Common questions about calculations, assumptions, and edge cases.

It converts between meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), and knots.

Convert between units across length, weight, temperature, data storage, speed, area, and volume.

Convert between millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles.