Metres per second as the base
All supported speed units are linear and convert through metres per second.
Knots
One knot is exactly one nautical mile per hour, using the internationally defined nautical mile of 1852 metres.
No Mach approximation
Mach depends on the local speed of sound, which varies with conditions, so this converter deliberately avoids pretending one universal Mach factor is exact.
Frequently asked questions
Does conversion happen in my browser?
Yes. These value conversions run in the browser and do not require an account.
Should I verify a critical conversion?
Yes. For engineering, laboratory, medical, financial, legal, or safety-critical work, verify the unit definition and result against an authoritative standard for your context.