Convert m/s, km/h, mph, ft/s and knots.
Type or paste on the left — the result updates as you type.
A knot is one nautical mile per hour, with 1 nautical mile = 1852 m. Negative speeds are rejected.
Up to 100,000 UTF-16 units per input and 1,000,000 per result. See the supported formats and examples below.
Tool page updated: 2026-09-27
