Online calculators to convert miles to kilometers (mi to km) and kilometers to miles (km to mi) with additional formulas, examples, and conversion tables. Our conversions provide a quick and easy way to convert between these units.
Enter your value in one of the conversion calculators below to convert miles to km or convert km to miles.
Let's take a closer look at the conversion formulas so that you can do these conversions yourself with a calculator or with an old-fashioned pencil and paper.
The formula to convert from miles to km is:
km = mi x 1.609344
The formula to convert from km to miles is:
mi = km x 0.621371192
Next, let's look at some examples showing the work and calculations that are involved in converting between miles (mi) and kilometers (km).
Task: Convert 5 miles to kilometers (show work) Formula: mi x 1.609344 = km Calculations: 5 mi x 1.609344 = 8.04672 km Result: 5 mi is equal to 8.04672 km
Task: Convert 15 kilometers to miles (show work) Formula: km x 0.621371192 = mi Calculations: 15 km x 0.621371192 = 9.32056788 mi Result: 15 km is equal to 9.32056788 mi
For quick reference purposes, below are conversion tables that you can use to convert from miles to km, and km to miles.
|miles (mi)||kilometers (km)|
|1 mi||1.609344 km|
|2 mi||3.218688 km|
|3 mi||4.828032 km|
|4 mi||6.437376 km|
|5 mi||8.04672 km|
|6 mi||9.656064 km|
|7 mi||11.265408 km|
|8 mi||12.874752 km|
|9 mi||14.484096 km|
|10 mi||16.09344 km|
|20 mi||32.18688 km|
|30 mi||48.28032 km|
|40 mi||64.37376 km|
|50 mi||80.4672 km|
|75 mi||120.7008 km|
|100 mi||160.9344 km|
|250 mi||402.336 km|
|500 mi||804.672 km|
|750 mi||1,207.008 km|
|1,000 mi||1,609.344 km|
|kilometers (km)||miles (mi)|
|1 km||0.621371192 mi|
|2 km||1.242742384 mi|
|3 km||1.864113576 mi|
|4 km||2.485484768 mi|
|5 km||3.10685596 mi|
|6 km||3.728227152 mi|
|7 km||4.349598344 mi|
|8 km||4.970969536 mi|
|9 km||5.592340728 mi|
|10 km||6.21371192 mi|
|20 km||12.42742384 mi|
|30 km||18.64113576 mi|
|40 km||24.85484768 mi|
|50 km||31.0685596 mi|
|75 km||46.6028394 mi|
|100 km||62.1371192 mi|
|250 km||155.342798 mi|
|500 km||310.685596 mi|
|750 km||466.028394 mi|
|1,000 km||621.371192 mi|
The following is a list of definitions relating to conversions between miles and kilometers.
A mile is a unit of length in both US Customary Units as well as the Imperial System. The symbol for mile is mi. There are 1,760 yards in a mile or 5,280 feet in a mile.
A kilometer is a unit of length in the Metric System. The symbol for kilometer is km. There are 1,000 meters in a kilometer. The International spelling is kilometre.
There are 0.621371192 miles in a kilometer.
There are 1.609344 kilometers in a mile.
This table provides a summary of the Length units within their respective measurement systems.
|inches||in or "||US Customary Units/Imperial System|
|feet||ft or '||US Customary Units/Imperial System||1 foot = 12 inches|
|yards||yd||US Customary Units/Imperial System||1 yard = 3 feet|
|miles||mi||US Customary Units/Imperial System||1 mile = 1760 yards or 5280 feet|
|millimeter||mm||Metric System||1000 mm = 1 m|
|centimeter||cm||Metric System||100 cm = 1 m, 1 cm = 10 mm|
|decimeter||dm||Metric System||10 dm = 1 m, 1 dm = 10 cm|
|meter||m||Metric System||1 m = 1000 mm, 100 cm, 10 dm|
|kilometer||km||Metric System||1 km = 1000 m|
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