Speed Converters
Convert between different speed and velocity units with precision
Speed Unit Converter
Convert between miles per hour, kilometers per hour, meters per second, and more
Conversion Result
Enter a speed value and click "Convert Speed" to see the result
What is Speed Conversion?
Speed conversion allows you to translate velocity measurements between different units like miles per hour, kilometers per hour, meters per second, and knots.
Why Do You Need It?
Essential for travel planning, vehicle specifications, weather reports, aviation, marine navigation, and understanding speed limits in different countries.
When Do You Need It?
When traveling internationally, comparing vehicle performance, understanding weather data, flight planning, or working with scientific measurements.
Common Speed Conversions
| Miles per Hour (MPH) | Kilometers per Hour (KPH) | Meters per Second (m/s) | Knots |
|---|---|---|---|
| 10 mph | 16.09 kph | 4.47 m/s | 8.69 knots |
| 25 mph | 40.23 kph | 11.18 m/s | 21.72 knots |
| 55 mph | 88.51 kph | 24.59 m/s | 47.79 knots |
| 70 mph | 112.65 kph | 31.29 m/s | 60.83 knots |
| 100 mph | 160.93 kph | 44.70 m/s | 86.90 knots |
Speed Facts & Tips
Speed Unit Origins
- • MPH: Used primarily in the US and UK
- • KPH: Standard in most countries worldwide
- • Knots: Used in aviation and marine navigation
- • Mach: Speed relative to sound (343 m/s at sea level)
Quick Conversion Tips
- • MPH to KPH: Multiply by 1.6
- • KPH to MPH: Multiply by 0.62
- • MPH to m/s: Multiply by 0.447
- • Knots to MPH: Multiply by 1.15