Speed
m/s, km/h, knots, mph.
Unit converter
Common references
About the Speed converter
Speed is a common conversion in daily work and study. This converter supports 5 units, including Meters per second, Kilometers per hour, Miles per hour, Knot, Feet per second. Pick the from/to units, enter a value, and get the result instantly.
Conversions follow standard factors and display up to 12 decimal places. The common reference table below lists the most-used baseline values for quick comparison.
Which unit system do these conversions follow?
Everyday conversions for length, mass and related quantities follow the International System of Units (SI), maintained through the General Conference on Weights and Measures. NIST publishes an English reference. Celsius and Fahrenheit also differ by an offset, not only by a scale factor.
“The International System of Units (SI), commonly known as the metric system, is the international standard for measurement.”
Frequently Asked Questions
Is this converter free?
Yes, it is completely free. The site shares a daily quota of 20 conversions across all tools.
Which Speed units are supported?
It supports 5 units, including Meters per second, Kilometers per hour, Miles per hour, Knot, Feet per second. Any pair can be selected in the from/to dropdowns.
How accurate are the results?
Results use standard conversion factors and display up to 12 decimal places, enough for almost all use cases.