Speed Converter
Convert speed units including meters per second, kilometers per hour, miles per hour, and knots.
About Speed Converter
From tracking running pace to comparing aircraft cruise speeds, speed units vary wildly: m/s, km/h, mph, knots and Mach. Tooloria’s Speed Converter covers them all, with altitude-aware Mach calculations based on the 1976 U.S. Standard Atmosphere. It updates conversions in real time and keeps a history so pilots or athletes can compare multiple values at a glance. All computations are local—ideal for logging data when internet is patchy.
Frequently Asked Questions
Do knots convert to mph accurately?
Yes—1 knot is defined as exactly 1 nautical mile per hour (1 885.0 m). Our factor is 1 kn = 1.150 78 mph.
How is Mach number calculated?
Mach = true airspeed divided by local speed of sound. Enter altitude or temperature and the converter adjusts the denominator accordingly.
Can cyclists use the tool?
Absolutely—km/h ↔ mph covers common cycle-computer readouts, and pace mode shows min/km or min/mi for training plans.