Speed Converter

Convert mph to km/h, m/s to mph, ft/s, knots and more as you type. Charts show the speeds people look up most.

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Last updated: 4 November 2026

Convert Speed

From

60 mph = 96.56064 km/h

60 mph in other units

Kilometer per hour96.56064 km/h
Mile per hour60 mph
Meter per second26.8224 m/s
Foot per second88 ft/s
Knot52.138575 kn
Foot per minute5,280 ft/min
Mile per minute1 mi/min
Inch per second1,056 in/s
Centimeter per second2,682.24 cm/s
Kilometer per second0.026822 km/s
Mach0.078821 Mach
Speed of light8.947 × 10⁻⁸ c

Updates as you type. Type in either box.

Round to

You can type a fraction (1/4, 1 1/2) or a number with commas (1,000). For running pace in minutes per mile, use the Pace Calculator.

Common Speed Conversions

Speed Conversion Formulas

mph =km/h1.609344

km/h = mph × 1.609344
m/s = mph × 0.44704
mph = m/s × 2.236936
ft/s = mph × 1.466667
km/h = m/s × 3.6
knots = km/h ÷ 1.852

Every factor is exact: a mile is exactly 1,609.344 meters and a knot is exactly 1.852 km/h.

Speed Units at a Glance

Unit	Symbol	Equals
Centimeter per second	cm/s	0.01 m/s
Meter per second	m/s	1 m/s
Kilometer per hour	km/h	0.2777778 m/s
Kilometer per second	km/s	1,000 m/s
Inch per second	in/s	0.0254 m/s
Foot per second	ft/s	0.3048 m/s
Foot per minute	ft/min	0.00508 m/s
Mile per hour	mph	0.44704 m/s
Mile per minute	mi/min	26.8224 m/s
Knot	kn	0.5144444 m/s
Mach (speed of sound)	Mach	340.294 m/s
Speed of light	c	299,792,458 m/s

Popular Conversion Charts

The speeds people look up most, such as how fast 60 mph is in km/h. Pick a conversion, then click a row to convert it.

Miles per hour	Kilometers per hour
	1.609344 km/h
	8.04672 km/h
	16.09344 km/h
	24.14016 km/h
	32.18688 km/h
	40.2336 km/h
	48.28032 km/h
	56.32704 km/h
	64.37376 km/h
	72.42048 km/h
	80.4672 km/h
	88.51392 km/h
	96.56064 km/h
	104.60736 km/h
	112.65408 km/h
	120.7008 km/h
	128.74752 km/h
	136.79424 km/h
	144.84096 km/h
	160.9344 km/h
	177.02784 km/h
	193.12128 km/h
	241.4016 km/h

Kilometers per hour	Miles per hour
	6.213712 mph
	12.427424 mph
	18.641136 mph
	24.854848 mph
	31.06856 mph
	37.282272 mph
	43.495983 mph
	49.709695 mph
	55.923407 mph
	62.137119 mph
	68.350831 mph
	74.564543 mph
	80.778255 mph
	86.991967 mph
	93.205679 mph
	99.419391 mph

Meters per second	Miles per hour
	2.236936 mph
	4.473873 mph
	6.710809 mph
	11.184681 mph
	22.369363 mph
	26.843236 mph
	29.080172 mph
	33.554044 mph
	44.738726 mph
	67.108089 mph
	89.477452 mph
	111.846815 mph

Miles per hour	Meters per second
	0.44704 m/s
	2.2352 m/s
	4.4704 m/s
	8.9408 m/s
	13.4112 m/s
	17.8816 m/s
	22.352 m/s
	26.8224 m/s
	31.2928 m/s
	35.7632 m/s
	40.2336 m/s
	44.704 m/s

Feet per second	Miles per hour
	0.681818 mph
	1.363636 mph
	3.409091 mph
	6.818182 mph
	13.636364 mph
	19.090909 mph
	20.454545 mph
	27.272727 mph
	34.090909 mph
	40.909091 mph
	60 mph
	68.181818 mph

Miles per hour	Feet per second
	1.466667 ft/s
	7.333333 ft/s
	14.666667 ft/s
	29.333333 ft/s
	44 ft/s
	58.666667 ft/s
	73.333333 ft/s
	88 ft/s
	102.666667 ft/s
	117.333333 ft/s
	132 ft/s
	146.666667 ft/s

Knots	Miles per hour
	1.150779 mph
	2.301559 mph
	2.531715 mph
	5.753897 mph
	9.206236 mph
	11.507794 mph
	17.261692 mph
	23.015589 mph
	34.523383 mph
	57.538972 mph
	115.077945 mph

Miles per hour	Knots
	4.344881 kn
	8.689762 kn
	13.034644 kn
	17.379525 kn
	21.724406 kn
	26.069287 kn
	34.75905 kn
	43.448812 kn
	52.138575 kn
	60.828337 kn
	86.897624 kn

Meters per second	Kilometers per hour
	3.6 km/h
	7.2 km/h
	10.8 km/h
	18 km/h
	36 km/h
	54 km/h
	72 km/h
	90 km/h
	108 km/h
	144 km/h
	180 km/h

Kilometers per hour	Meters per second
	1.388889 m/s
	2.777778 m/s
	5.555556 m/s
	8.333333 m/s
	10 m/s
	13.888889 m/s
	16.666667 m/s
	22.222222 m/s
	27.777778 m/s
	33.333333 m/s
	50 m/s

Feet per second	Meters per second
	0.3048 m/s
	0.6096 m/s
	1.524 m/s
	3.048 m/s
	6.096 m/s
	9.144 m/s
	15.24 m/s
	30.48 m/s

Meters per second	Feet per second
	3.28084 ft/s
	6.56168 ft/s
	16.404199 ft/s
	32.808399 ft/s
	65.616798 ft/s
	98.425197 ft/s
	164.041995 ft/s
	328.08399 ft/s

Kilometers per second	Miles per hour
	2.236936 mph
	22.369363 mph
	223.693629 mph
	1,118.468146 mph
	2,236.936292 mph
	4,473.872584 mph
	11,184.68146 mph
	22,369.362921 mph

Miles per hour	Kilometers per second
	0.000447 km/s
	0.00447 km/s
	0.044704 km/s
	0.44704 km/s
	4.4704 km/s
	44.704 km/s

Mach	Miles per hour
	380.607999 mph
	761.215999 mph
	1,141.823998 mph
	1,522.431997 mph
	2,283.647996 mph
	3,806.079993 mph
	7,612.159986 mph
	15,224.319971 mph

Miles per hour	Mach
	0.131369 Mach
	0.656844 Mach
	0.999716 Mach
	1.313688 Mach
	2.627375 Mach
	3.941063 Mach
	6.568438 Mach
	9.195813 Mach

1 mph = 1.609344 km/h. Every chart is worked out with the same maths as the converter.

Speed Conversion Table

One mph, km/h, m/s, knot and ft/s in every unit.

Unit	1 mph	1 km/h	1 m/s	1 knot	1 ft/s
Centimeter per second	44.704	27.77777778	100	51.44444444	30.48
Meter per second	0.44704	0.27777778	1	0.51444444	0.3048
Kilometer per hour	1.609344	1	3.6	1.852	1.09728
Kilometer per second	0.00044704	0.00027778	0.001	0.00051444	0.0003048
Inch per second	17.6	10.93613298	39.37007874	20.25371829	12
Foot per second	1.46666667	0.91134442	3.2808399	1.68780986	1
Foot per minute	88	54.68066492	196.8503937	101.26859143	60
Mile per hour	1	0.62137119	2.23693629	1.15077945	0.68181818
Mile per minute	0.01666667	0.01035619	0.03728227	0.01917966	0.01136364
Knot	0.86897624	0.5399568	1.94384449	1	0.5924838
Mach (speed of sound)	0.00131369	0.00081629	0.00293864	0.00151176	0.0008957

How Many in a …?

The answers to the most asked questions, such as how many km/h are in a mph.

One	Equals
1 mph	1.609344 km/h = 0.44704 m/s = 1.466667 ft/s = 0.868976 kn
1 km/h	0.621371 mph = 0.277778 m/s = 0.911344 ft/s = 0.539957 kn
1 m/s	3.6 km/h = 2.236936 mph = 3.28084 ft/s = 1.943844 kn
1 knot	1.852 km/h = 1.150779 mph = 0.514444 m/s
1 ft/s	0.681818 mph = 1.09728 km/h = 0.3048 m/s
Mach 1 (sea level, 15 °C)	340.294 m/s = 761.216 mph = 1,225.0584 km/h
The speed of light	299,792,458 m/s = 299,792.458 km/s = 670,616,629.3844 mph

Mach depends on the air. 340.294 m/s is the speed of sound in the standard atmosphere at sea level and 15 °C; it is lower in cold air and at height.

About Speed Conversion

Type a speed in either box, choose the units, and the other box updates at once. It covers 12 units, from cm/s to the speed of light, including mph, km/h, m/s, ft/s, knots and Mach. Your numbers never leave your browser.

Use this free speed converter to change a speed between miles per hour, kilometers per hour, meters per second, feet per second, knots, Mach and more, from centimeters per second to the speed of light. Type a number in either box and the other one follows as you type, with the same speed in the main units shown underneath. Pick how many decimals to round to, swap the two units with one click, and copy a link to your conversion. Charts list the speeds people look up most for mph to km/h, km/h to mph, m/s to mph, ft/s to mph and knots, plus a table with 1 mph, 1 km/h, 1 m/s, 1 knot and 1 ft/s in every unit and the answers to how many km/h are in a mph. It is free and instant, and your numbers stay in your browser.

How to convert mph to km/h

Multiply the miles per hour by 1.609344. A mile is exactly 1,609.344 meters, so the answer is exact.

km/h = mph × 1.609344

For 60 mph: 60 × 1.609344 = 96.56064 km/h. For 70 mph it is 112.65408 km/h, and for 100 mph 160.9344 km/h. A quick estimate is to add half of the miles and a tenth of them again, so 60 mph is about 96.

How to convert km/h to mph

Divide the kilometers per hour by 1.609344, which is the same as multiplying by 0.621371: mph = km/h ÷ 1.609344. For 100 km/h: 62.137119 mph. For 50 km/h it is 31.06856 mph.

Meters per second (m/s) and mph

One meter per second is 2.236936 mph, and one mph is 0.44704 m/s. So 10 m/s is 22.369363 mph and 60 mph is 26.8224 m/s. To change m/s to km/h, multiply by 3.6: 1 m/s is exactly 3.6 km/h.

Feet per second

One mph is 1.466667 ft/s, because a mile is 5,280 feet and an hour is 3,600 seconds. So 60 mph is exactly 88 ft/s, and 100 ft/s is 68.181818 mph.

Knots and nautical miles

A knot is one nautical mile per hour. A nautical mile is exactly 1,852 meters, so 1 knot is 1.852 km/h, 1.150779 mph or 0.514444 m/s. Knots are used for ships and aircraft: 20 mph is 17.379525 knots.

Mach and the speed of sound

Mach 1 is the speed of sound, and that depends on the air. This converter uses the standard atmosphere at sea level and 15 °C, where sound travels at 340.294 m/s, which is about 761.2 mph or 1,225.06 km/h. In colder air or at height the speed of sound, and so Mach 1, is lower.

The speed of light

The speed of light in a vacuum is exactly 299,792,458 m/s, which is 299,792.458 km/s or about 670.6 million mph.

Minutes per mile (running pace)

Pace is time per distance, so it works the other way round: mph = 60 ÷ minutes per mile. A 10-minute mile is 6 mph, and an 8-minute mile is 7.5 mph. The Pace Calculator changes between pace, mph and km/h and shows your splits.

Speed and velocity

Speed is how fast something moves. Velocity is speed in a given direction. This converter changes the units of speed. To work out a speed from a distance and a time, divide: speed = distance ÷ time, so 150 miles in 3 hours is 50 mph.

Why a mile per hour is exactly 0.44704 m/s

The international mile is defined as exactly 1,609.344 meters (5,280 feet of 0.3048 m). Dividing by 3,600 seconds gives 0.44704 m/s, so every conversion between mph, km/h, m/s and ft/s is exact, and the converter shows as many digits as you ask for.

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Frequently Asked Questions

How do I convert mph to km/h?

Multiply the miles per hour by 1.609344. For example, 60 mph is 96.56064 km/h, 70 mph is 112.65408 km/h and 100 mph is 160.9344 km/h.

How do I convert km/h to mph?

Divide the kilometers per hour by 1.609344, or multiply by 0.621371. For example, 100 km/h is 62.137119 mph and 50 km/h is 31.06856 mph.

How many km/h is 60 mph?

96.56064 km/h. In other units 60 mph is exactly 88 feet per second, 26.8224 meters per second and 52.138575 knots.

How do I convert m/s to mph?

Multiply the meters per second by 2.236936. For example, 10 m/s is 22.369363 mph and 20 m/s is 44.738727 mph.

How do I convert mph to m/s?

Multiply the miles per hour by 0.44704. For example, 60 mph is 26.8224 m/s, and 1 mph is 0.44704 m/s.

How do I convert m/s to km/h?

Multiply by 3.6. For example, 1 m/s is exactly 3.6 km/h, and 10 m/s is 36 km/h. To go back, divide the km/h by 3.6.

How many feet per second is 60 mph?

Exactly 88 feet per second. One mph is 1.466667 ft/s, because a mile is 5,280 feet and an hour is 3,600 seconds.

How do I convert ft/s to mph?

Multiply the feet per second by 0.681818. For example, 100 ft/s is 68.181818 mph and 88 ft/s is exactly 60 mph.

How do I convert knots to mph?

Multiply the knots by 1.150779. For example, 10 knots is 11.50779 mph. To go the other way, multiply mph by 0.868976: 20 mph is 17.379525 knots.

How fast is 1 knot?

One knot is one nautical mile per hour: exactly 1.852 km/h, which is 1.150779 mph or 0.514444 m/s. A nautical mile is exactly 1,852 meters.

What is Mach 1 in mph?

About 761.2 mph (340.294 m/s, or 1,225.06 km/h) in the standard atmosphere at sea level and 15 °C. The speed of sound depends on the air, so Mach 1 is lower in cold air and at height.

How fast is the speed of light in km/s?

299,792.458 km/s. The speed of light in a vacuum is exactly 299,792,458 meters per second, which is about 670.6 million mph.

How do I convert minutes per mile to mph?

Divide 60 by the minutes per mile. A 10-minute mile is 6 mph and an 8-minute mile is 7.5 mph. The Pace Calculator does this for you and also shows pace in km/h and your splits.

What is the difference between speed and velocity?

Speed is how fast something moves. Velocity is speed in a given direction. The units are the same, such as m/s or mph, and this converter works for both.

What is the formula for speed?

Speed = distance ÷ time. For example, 150 miles in 3 hours is 150 ÷ 3 = 50 mph. Use this converter to change the answer into km/h or m/s.

Are my numbers saved or shared?

No. The conversion happens in your browser, and the numbers you type are not stored or sent to any server. A link you copy keeps the numbers after the # sign, which browsers never send to a server.