Online Speed & Velocity Converter
Convert between all common speed units including Kilometers per Hour (km/h), Miles per Hour (mph), Meters per Second (m/s), Feet per Second (ft/s), Knots (nautical), and Mach (speed of sound). This converter is useful for travelers, pilots, sailors, athletes, and automotive enthusiasts.
Common Speed Conversion Reference Table
| Conversion | Multiplier | Example |
|---|---|---|
| km/h to mph | × 0.621371 | 100 km/h = 62.14 mph |
| mph to km/h | × 1.60934 | 60 mph = 96.56 km/h |
| m/s to km/h | × 3.6 | 10 m/s = 36 km/h |
| Knots to km/h | × 1.852 | 50 knots = 92.6 km/h |
| Knots to mph | × 1.15078 | 50 knots = 57.54 mph |
Where Each Speed Unit is Used
- km/h: Standard road speed limits in most countries worldwide.
- mph: Road speed limits in the United States and United Kingdom.
- m/s: Scientific calculations in physics and engineering.
- Knots: Maritime and aviation navigation (1 knot = 1 nautical mile per hour).
- Mach: Supersonic aircraft speeds (Mach 1 = speed of sound ≈ 1,235 km/h at sea level).
Frequently Asked Questions
100 kilometers per hour equals approximately 62.14 miles per hour.
Knots are based on nautical miles, which correspond directly to one minute of latitude on Earth's surface. This makes navigation calculations significantly easier when using charts and maps.