🚀 Speed Converter

Convert km/h, mph, m/s, Knots & Mach Instantly

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📊 Common Speed Reference

Speed	km/h	mph	m/s
Walking	5 km/h	3.1 mph	1.39 m/s
Cycling	25 km/h	15.5 mph	6.94 m/s
Car (highway)	100 km/h	62.1 mph	27.8 m/s
Sound (Mach 1)	1235 km/h	767 mph	343 m/s

Q: How to convert km/h to mph?

Multiply km/h by 0.621371. Example: 100 km/h × 0.621371 = 62.14 mph. Speed limits in India are in km/h; in the USA in mph.

Q: What is Mach 1?

Mach 1 = the speed of sound = 340.29 m/s = 1,225 km/h = 761 mph at sea level (20°C). Fighter jets travel at Mach 2+ (2,450 km/h+).