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Converters2 min readFebruary 22, 2026

Speed Converter: MPH, KM/H, Knots, and More

Convert speed units instantly. Miles per hour to kilometers per hour, knots to mph, meters per second, and more.

Speed conversion is important for driving abroad, aviation, marine navigation, and physics. Our Speed Converter provides instant, accurate conversions between all common speed units.

Common Conversions

1 mph = 1.609 km/h. 1 knot = 1.852 km/h = 1.151 mph. 1 m/s = 3.6 km/h.

Use Our Free Speed Converter

Select units, enter a value, and get instant results. Supports mph, km/h, m/s, knots, and feet per second.

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Use our free Speed Converter tool — no signup required, works on any device.

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