Speed Converter

Convert between different speed units: m/s, km/h, mph, ft/s, knots, and Mach

How to use: Enter a speed value, select source and target units. The converter supports metric (m/s, km/h), imperial (mph, ft/s), nautical (knots), and aeronautical (Mach) units.

Input

Enter value and select units to convert

Speed Value

From Unit

To Unit

Result

Conversion result and formula

Conversion Result

Enter a value to see the result

Examples

• 100 km/h = 62.14 mph

• 60 mph = 96.56 km/h

• 1 Mach ≈ 1,234.8 km/h

Speed Units Explained

Metric: m/s (meters per second) and km/h (kilometers per hour) are used in science and most countries.

Imperial: mph (miles per hour) and ft/s (feet per second) are used in the United States and some other countries.

Nautical: Knots (nautical miles per hour) are used in maritime and aviation.

Aeronautical: Mach is the ratio of speed to the speed of sound (approximately 343 m/s at sea level).