How do I convert km/h to mph?

Divide km/h by 1.60934 to get mph. For example, 100 km/h = 62.14 mph. Our tool handles this automatically.

A knot is a unit of speed equal to one nautical mile per hour (approximately 1.852 km/h or 1.151 mph). It's primarily used in aviation and maritime navigation.

What speed units are supported?

We support meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), knots, and feet per second (ft/s).

What is the speed of sound in different units?

The speed of sound at sea level is approximately 343 m/s, 1,235 km/h, 767 mph, or 1,125 ft/s.

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Speed Converter

Convert between m/s, km/h, mph, knots, and ft/s

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From

Decimal Places:

All Conversions

Meters per second

0.277778

m/s

Kilometers per hour

km/h

Miles per hour

0.621372

mph

Knots

0.539958

Feet per second

0.911345

ft/s

How It Works

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Last updated: Feb 27, 2026