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Speed converter

This speed converter changes kilometres per hour, metres per second, miles per hour, feet per second and knots. Enter a speed and choose its unit to see the selected result and every supported equivalent.

It works for road speed, moving objects, wind, marine travel and aviation. The factors use the exact definitions of the kilometre, international mile, foot, hour and nautical mile; only the displayed answer is rounded.

ValueFromTo

Result

96.5606 kilometre per hour (km/h)

Formula: 60 mile per hour (mph) × 1.609344 ≈ 96.56064 kilometre per hour (km/h)

In every unit

Unit	Value
centimetre per second (cm/s)	2,682.24
metre per second (m/s)	26.8224
kilometre per hour (km/h)	96.5606
kilometre per second (km/s)	0.026822
foot per second (ft/s)	88
mile per hour (mph)	60
knot (kn)	52.1386

Kilometers per hour to meters per second

A kilometre contains 1,000 metres and an hour contains 3,600 seconds. Therefore 1 km/h = 1,000 ÷ 3,600 m/s = 1 ÷ 3.6 m/s. Divide kph by 3.6 to get m/s, or multiply m/s by 3.6 to go back.

90 km/h ÷ 3.6 = 25 m/s.
54 km/h ÷ 3.6 = 15 m/s.
20 m/s × 3.6 = 72 km/h.
5 m/s × 3.6 = 18 km/h.

MPH to KPH and KPH to MPH

The international land mile is exactly 1,609.344 metres, which makes 1 mph exactly 1.609344 km/h. Multiply mph by 1.609344 for kph; divide kph by the same factor for miles per hour.

Conversion	Result
30 mph to kph	48.28032 km/h
60 mph to kph	96.56064 km/h
100 kph to mph	≈ 62.1371 mph
120 kph to mph	≈ 74.5645 mph

Knots to MPH and wind speed

A knot is one nautical mile per hour. Because the nautical mile is defined as exactly 1,852 metres, 1 knot = 1.852 km/h = 1,852 ÷ 3,600 m/s. Knots are widely used for marine and air navigation and in some weather reports.

Wind speed uses the same m/s, km/h, mph and knot conversions as any other physical speed. The Beaufort scale is not a linear speed unit, so it is not included in the converter.

Value	Equivalent
1 knot	1.852 km/h ≈ 1.15078 mph
10 knots	18.52 km/h
20 knots	37.04 km/h ≈ 23.0156 mph
10 m/s	36 km/h ≈ 19.4384 knots

Speed conversion formula and scope

The general linear formula is v₂ = v₁ × f₁ ÷ f₂. The calculator converts the input to metres per second first and then into the target unit, without rounding the intermediate value.

Speed here means distance travelled per unit of time. Internet and data rates use bits per second, interface speed can involve signalling and protocol overhead, and changing audio playback speed is a media-processing task. Those quantities are not interchangeable with km/h or mph.

Running pace is the reciprocal form of speed: it records time per distance. At 12 km/h, for example, pace is 60 ÷ 12 = 5 min/km, a task handled more directly by a running pace calculator.

1 unit	In metres per second
1 cm/s	0.01 m/s
1 km/h	0.277777… m/s
1 ft/s	0.3048 m/s
1 mph	0.44704 m/s
1 knot	0.514444… m/s
1 km/s	1,000 m/s

Frequently asked questions

How do I convert kilometers per hour to meters per second?

Divide km/h by 3.6. For example, 72 km/h equals 20 m/s.

How do I convert meters per second to kilometers per hour?

Multiply m/s by 3.6. For example, 10 m/s equals 36 km/h.

How many kilometers per hour are in one mile per hour?

One mile per hour is exactly 1.609344 km/h, so 60 mph equals 96.56064 km/h.

How many miles per hour are in a knot?

One knot is about 1.150779 mph. It is exactly 1.852 km/h.

Can this converter change an internet speed in Mbps?

No. Mbps is a data rate, while this calculator converts physical speed measured as distance per time.

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Updated: 2026-08-16