Speed Converter

Convert between different speed units

Available Units:

Metric: Meters per second (m/s), Kilometers per hour (km/h)
Other: Miles per hour (mph), Knots (kn), Feet per second (ft/s), Mach

Frequently Asked Questions

What speed units are supported?

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

Is Mach number a fixed value?

Mach 1 is approximately 343 m/s at sea level, but varies with altitude and temperature. We use the standard sea-level value.

Can I use this for running pace conversions?

Yes, convert between min/km, min/mile, and speed units to calculate running or cycling pace.

How do I convert km/h to mph?

To convert km/h to mph, divide the value by 1.60934. For example, 100 km/h equals approximately 62.137 mph. Conversely, multiply mph by 1.60934 to get km/h. This is useful when traveling between countries that use different speed measurement systems.

What is a knot and where is it used?

A knot equals one nautical mile per hour, or approximately 1.15078 mph (1.852 km/h). Knots are the standard speed unit in maritime and aviation navigation. The term originates from the old practice of sailors counting knots on a rope trailing behind their ship to measure speed.