Speed & Velocity Converter
Precise speed and velocity conversions for automotive, aerospace, marine, and scientific use. Effortlessly convert between miles per hour, kilometers per hour, knots, and meters per second.
Supported Speed & Velocity Units & Standards
Detailed definitions, unit symbols, and measurement systems for this category.
| Unit Name | Symbol | System | Description |
|---|---|---|---|
| Kilometer per Hour (Kilometers per Hour) | km/h | metric | Standard metric speed unit used on world roadways. |
| Mile per Hour (Miles per Hour) | mph | imperial | Standard speed unit in the US and UK equal to 1.609344 km/h. |
| Meter per Second (Meters per Second) | m/s | metric | Fundamental SI unit of velocity and speed. |
| Knot (Knots) | kn | standard | One nautical mile per hour (exactly 1.852 km/h or approx. 1.151 mph). |
| Foot per Second (Feet per Second) | ft/s | imperial | Imperial velocity unit equal to exactly 0.3048 m/s. |
Popular Speed & Velocity Conversion Pairs
Browse dedicated conversion pages complete with snippet tables and formula explanations.
Speed & Velocity FAQ
Common questions about converting speed & velocity units.
What units are supported in the Speed & Velocity converter?
Unitly supports 5 distinct speed & velocity units: Kilometer per Hour (km/h), Mile per Hour (mph), Meter per Second (m/s), Knot (kn), Foot per Second (ft/s).
How does Unitly ensure accurate speed & velocity calculations?
All calculations are executed client-side using NIST-calibrated constants and IEEE-754 precision filters to eliminate floating-point artifacts.
Can I convert backwards or swap units?
Yes! Click the quick-swap button (⇄) or simply edit either the "From" or "To" field directly for instant bidirectional calculation.