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Convert mph to km/h, km/h to mph

Conversion Calculators

Convert mph to km/h

mph
km/h
Decimals

Convert km/h to mph

km/h
mph
Decimals

Conversion Definitions

What are miles per hour (mph)?

Miles per hour is a unit of speed in both US Customary Units as well as the Imperial System. It measures the number of miles travelled in an hour. The symbol for miles per hour is mph. There are 0.6213711922 mph in km/h.

What are kilometers per hour (km/h)?

Kilometers per hour is a unit of speed in the Metric System. It measures the number of kilometers travelled in an hour. The symbol for kilometers per hour is km/h and the International spelling is kilometres per hour. There are 1.609344 km/h in mph.

Conversion Formulas

The formula to convert from mph to km/h is:

km/h = mph x 1.609344

The formula to convert from km/h to mph is:

mph = km/h ÷ 1.609344

Conversion Examples

Miles per hour to Kilometers per hour Conversion Example

Task: Convert 75 miles per hour to kilometers per hour (show work)

Formula:
mph x 1.609344 = km/h

Calculations:
75 mph x 1.609344 = 120.7008 km/h

Result:
75 mph is equal to 120.7008 km/h

Kilometers per hour to Miles per hour Conversion Example

Task: Convert 2,500 kilometers per hour to miles per hour (show work)

Formula:
km/h ÷ 1.609344 = mph

Calculations:
2,500 km/h ÷ 1.609344 = 1,553.4279805933 mph

Result:
2,500 km/h is equal to 1,553.4279805933 mph

Conversion Tables

Miles per hour to Kilometers per hour Conversion Chart

miles per hour (mph) kilometers per hour (km/h)
1 mph1.609344 km/h
2 mph3.218688 km/h
3 mph4.828032 km/h
4 mph6.437376 km/h
5 mph8.04672 km/h
6 mph9.656064 km/h
7 mph11.265408 km/h
8 mph12.874752 km/h
9 mph14.484096 km/h
10 mph16.09344 km/h
20 mph32.18688 km/h
30 mph48.28032 km/h
40 mph64.37376 km/h
50 mph80.4672 km/h
75 mph120.7008 km/h
100 mph160.9344 km/h
250 mph402.336 km/h
500 mph804.672 km/h
750 mph1,207.008 km/h
1,000 mph1,609.344 km/h
2,500 mph4,023.36 km/h
5,000 mph8,046.72 km/h
7,500 mph12,070.08 km/h
10,000 mph16,093.44 km/h
25,000 mph40,233.6 km/h
50,000 mph80,467.2 km/h
75,000 mph120,700.8 km/h
100,000 mph160,934.4 km/h
250,000 mph402,336 km/h

Kilometers per hour to Miles per hour Conversion Chart

kilometers per hour (km/h) miles per hour (mph)
1 km/h0.6213711922 mph
2 km/h1.2427423845 mph
3 km/h1.8641135767 mph
4 km/h2.4854847689 mph
5 km/h3.1068559612 mph
6 km/h3.7282271534 mph
7 km/h4.3495983457 mph
8 km/h4.9709695379 mph
9 km/h5.5923407301 mph
10 km/h6.2137119224 mph
20 km/h12.4274238447 mph
30 km/h18.6411357671 mph
40 km/h24.8548476895 mph
50 km/h31.0685596119 mph
75 km/h46.6028394178 mph
100 km/h62.1371192237 mph
250 km/h155.3427980593 mph
500 km/h310.6855961187 mph
750 km/h466.028394178 mph
1,000 km/h621.3711922373 mph
2,500 km/h1,553.4279805933 mph
5,000 km/h3,106.8559611867 mph
7,500 km/h4,660.28394178 mph
10,000 km/h6,213.7119223733 mph
25,000 km/h15,534.2798059333 mph
50,000 km/h31,068.5596118667 mph
75,000 km/h46,602.8394178 mph
100,000 km/h62,137.1192237334 mph
250,000 km/h155,342.7980593335 mph

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