// conversions › 1 · Basic Converters
Convert speed between m/s, km/h, mph, knots and ft/s via metres per second.
result = value × (from→m/s) ÷ (to→m/s)
It converts convert speed between m/s, km/h, mph, knots and ft/s via metres per second by first normalising your value to the SI base unit (metre per second) and then scaling to your chosen target unit. This hub-and-spoke approach guarantees every unit pair is internally consistent.
100 km/h to m/s: 100 × 0.277778 = 27.78 m/s (base), then ÷ 1 = 27.78 m/s.
The horizontal bar plots your converted value on a scale alongside two or three real-world benchmark markers, so the number gains physical meaning rather than sitting in isolation.
Aviation and marine navigation (knots), automotive and athletics.
Conversions are exact ratios where the units are defined exactly (most SI and imperial units) and best-available constants otherwise. Extremely large or small magnitudes are shown in general (g) format; round-tripping through the base unit may introduce tiny floating-point differences in the final decimal places.