Speed Converter
Convert between mph, km/h, m/s, knots, and feet per second.
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Common Conversions
1 mph = 1.609 km/h · 1 knot = 1.852 km/h · 1 m/s = 3.6 km/h. Results use precise conversion factors.
FAQ
What's a knot?
One nautical mile per hour, used in aviation and maritime navigation.
Why mph and km/h differ?
Mph is imperial; km/h is metric. They measure the same thing in different units.
Mach speed?
Not in this version — Mach varies with altitude.
Speed of light?
Not included; this tool focuses on everyday speeds.
Saved?
No, runs locally.
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