Speed Conversion — Complete Guide
Speed measurements vary significantly across different domains. Road speeds are typically expressed in kilometers per hour (km/h) or miles per hour (mph), scientific calculations use meters per second (m/s), maritime and aviation use knots, and aerospace engineering uses Mach numbers. Converting between these units is essential for travel planning, physics calculations, engineering design, and understanding weather reports from different countries.
Our Speed Converter supports 6 commonly used speed units with real-time conversion. Input a value in any unit and see the equivalent speed across all other supported formats. Whether you're comparing car speeds between metric and imperial, calculating aircraft velocities in knots vs. km/h, or working with wind speed data, this tool provides accurate, instant results.
Quick Reference
- 1 km/h = 0.621371 mph = 0.277778 m/s
- 1 mph = 1.60934 km/h = 0.868976 knots
- 1 knot = 1.852 km/h = 1.15078 mph
- Mach 1 = 343 m/s = 1235 km/h (at sea level, 20°C)
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