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Speed Converter

Converters

Convert between km/h, mph, m/s, knots, and more. Free, private — all processing in your browser.

Value

From

Meters/second1 m/s

Kilometers/hour3.599997 km/h

Miles/hour2.236936 mph

Feet/second3.28084 ft/s

Knots1.943846 kn

Mach0.002915 Mach

Common References — click to load

How to use

1. Enter or paste your data in the input area above
2. Adjust settings or options as needed
3. Click the action button or see real-time results
4. Copy the result with the copy button

All processing happens in your browser. Nothing is sent to any server.

About this tool

Convert between speed units: meters per second (m/s), kilometers per hour (km/h), miles per hour (mph), feet per second (ft/s), knots (nautical miles per hour), and Mach number (speed of sound). Enter a value in any unit and see all conversions simultaneously. Key conversions: 1 km/h = 0.621 mph, 1 knot = 1.852 km/h, Mach 1 = 343 m/s = 1,235 km/h. Essential for aviation, maritime navigation, automotive engineering, physics calculations, and weather reporting.