Speed Converter
Convert between m/s, km/h, mph, knots, and more
How to use Speed Converter
- 1Enter the speed value and select the current unit, such as meters per second or miles per hour.
- 2Choose the target unit for conversion.
- 3Review the converted speed and a few common reference values for context.
Speed, velocity, and unit conversion
Speed in target = speed in source × (source_unit_in_mps / target_unit_in_mps)Speed is the magnitude of how fast an object moves, while velocity also includes direction.
Common units differ by country and field: km/h for vehicles, m/s for physics, knots for maritime and aviation.
Converting through a base unit like meters per second keeps the math simple and avoids accumulated rounding errors.
Frequently asked questions
What is the difference between speed and velocity?
Speed is a scalar with magnitude only; velocity is a vector that adds direction to the magnitude.
Why do ships and planes use knots?
A knot is one nautical mile per hour; nautical miles relate directly to latitude, making navigation simpler.
Can I convert between pace and speed?
Yes; pace is the inverse of speed expressed as time per unit distance, such as minutes per kilometer.