Converters
Speed Converter
Pick a 'from' unit, a 'to' unit, and enter a speed. The calculator returns the converted speed plus equivalents in every supported unit.
Speed in your chosen unit. · e.g. 60
Internal base is meters per second. 1 mph = 1.609 km/h. 1 knot = 1 nautical mile per hour = 1.852 km/h.
Miles per hour → Kilometers per hour
96.56064 kph
60 mph = 96.56064 kph
1 mph ≈ 1.609 km/h ≈ 0.447 m/s. 1 knot ≈ 1.852 km/h ≈ 1.151 mph. 1 ft/s ≈ 0.682 mph.
Examples
60 mph to km/h
≈ 96.56 km/h
100 km/h to mph
≈ 62.14 mph
10 m/s to mph
≈ 22.37 mph
How it works
All units are stored as factors relative to meters per second. Convert through the m/s base: value times source factor gives m/s, then divide by target factor.
Formula · output = value × factor(from) ÷ factor(to)
1 km/h = 1/3.6 m/s. 1 mph ≈ 0.447 m/s. 1 ft/s = 0.3048 m/s. 1 knot ≈ 0.5144 m/s.
Related tools
- Length converter for the linear units that underpin speed.
- Time unit converter for the time units in speed denominators.
- All converters.
Frequently asked questions
km/h = mph × 1.609344. So 60 mph ≈ 96.56 km/h. The inverse: mph = km/h ÷ 1.609344. The 1.609 factor comes from miles to kilometers: 1 mile = 1.609344 km.
A knot equals one nautical mile per hour, or about 1.151 mph (1.852 km/h). Knots are used in aviation and marine navigation. The term comes from rope knots on a log line, an old method for measuring a ship's speed.
Divide m/s by 1000 to get km per second, then multiply by 3600 to get km per hour: 1 m/s × 3600 ÷ 1000 = 3.6 km/h. So 10 m/s = 36 km/h. The 3.6 factor is a common quick-conversion shortcut.
Casual jogging is around 8 km/h (5 mph). A 10-minute mile pace is 6 mph (9.66 km/h). World record marathon pace is around 21 km/h (13 mph). Walking pace is typically 5 km/h (3.1 mph).
Yes, but speed is usually a scalar (always positive). Negative values would represent motion in the opposite direction along an axis (signed velocity). The math works either way.
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