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Convert between km/h, mph, knots, and more.
Convert between km/h, mph, m/s, knots, and other speed units
100 km/h =0.000000 mph
Method: Convert to meters per second (m/s) first, then to target unit
Formula: 100 km/h × 0.277778 ÷ 0.44704 = 0.000000 mph
1 km/h = 0.621371 mph
1 mph = 1.60934 km/h
1 m/s = 3.6 km/h
1 knot = 1.852 km/h
1 mph = 0.868976 knots
1 m/s = 2.23694 mph
Walking speed: ~5 km/h (~3 mph)
Running speed: ~15 km/h (~9 mph)
Car highway speed: ~100 km/h (~62 mph)
Speed of sound: ~1,235 km/h (~767 mph)