Rangdom

Convert a speed into every unit at once

Enter one value and a unit — meters per second, kilometers per hour, miles per hour, feet per second, or knots — and read it back in every unit at once. Each input is reduced to a canonical value in meters per second (1 km/h = 0.27778 m/s, 1 kn = 0.51444 m/s), then every output is derived from that base. Decimals are supported, but a speed cannot be negative.