Speed Converter
Convert mph, km/h, m/s, and knots.
Speed units, converted
Speed is quoted in mph on roads, km/h in most of the world, m/s in physics, and knots at sea. Sixty mph is about 96.6 km/h or 26.8 m/s.
It is the traveller's tool — reading a speed limit sign in km/h while thinking in mph — and the sailor's or pilot's, converting between knots and the units on a phone.
Knots and nautical miles
A knot is one nautical mile per hour, slightly longer than a land mile. Your values are converted locally and never uploaded.
Frequently Asked Questions
How does the speed converter work?
Linear speed units are normalized to meters per second. For instance, 65 mph converts to about 104.607 km/h.
When should I use this converter?
Use it for travel planning, running notes, cycling data, vehicle specs, aviation, and marine speed comparisons.
What is the main limitation?
Pace units like minutes per mile are the inverse of speed; this tool focuses on direct speed units.
Is this converter private?
Yes. The conversion runs entirely in your browser, so your values are not uploaded, stored, or sent to a server.
More free browser utilities for conversion, formatting, and technical cleanup.