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Convert miles to km
Interactive miles to kilometers conversion tool
The miles to km converter below can be used to quickly and easily convert miles to kilometers. Simply enter the number of miles you want to convert and the calculator will output the corresponding value in kilometers.
What is the conversion factor between miles and kilometers?
A conversion factor is used to change the units of a measured quantity without changing its value. It represents the ratio (or fraction) that expresses the relationship between two different units. A conversion factor is always equal to 1.
The relationship between miles and kilometers is 1.609344, such as:
Following the formula above, we can see that there are 1.609344 kilometers for every mile, and for every kilometer, there are 11.609344 miles (0.621371 mi).
To convert from miles to kilometers, we turn our formula into a conversion factor that is equal to 1.
Both these fractions are equal to 1. The numerator and the denominator are equivalent, they are just expressed in different units.
Because we are converting from mile to kilometer, we will use the first fraction: 1.609344 km1 mi so that miles are canceled out. We then multiply the value in miles by this fraction to get the result in kilometers (see example).
Note that mi is in the denominator (bottom) of the conversion factor. This is important, you always want to have the unit you are converting from at the bottom and the unit you are converting to in the numerator (top).
You will find below how to use this ratio to convert from mi to km. Just remember for now that the conversion factor for converting from miles to kilometers is:
Which is bigger, a mile or a kilometer?
When it comes to measurements, there can be some confusion over which is bigger, a mile or an kilometer. To find out which one is larger, we must first convert one unit to the other and then compare them.
- 1 mi = 1.609344 km
- 1.60934 kilometers is bigger than 1 kilometer.
- 1 mile is, therefore, bigger than 1 kilometer.
- To be more specific, a kilometer is 1.60934 times smaller than a mile.
miles to kilometers conversion table
| miles | kilometers | miles | kilometers |
|---|---|---|---|
| 1 mi | 1.60934 km | 11 mi | 17.7028 km |
| 2 mi | 3.21869 km | 12 mi | 19.3121 km |
| 3 mi | 4.82803 km | 13 mi | 20.9215 km |
| 4 mi | 6.43738 km | 14 mi | 22.5308 km |
| 5 mi | 8.04672 km | 15 mi | 24.1402 km |
| 6 mi | 9.65606 km | 16 mi | 25.7495 km |
| 7 mi | 11.2654 km | 17 mi | 27.3588 km |
| 8 mi | 12.8748 km | 18 mi | 28.9682 km |
| 9 mi | 14.4841 km | 19 mi | 30.5775 km |
| 10 mi | 16.0934 km | 20 mi | 32.1869 km |
How to convert miles to kilometers?
Multiplying any value by 1 will get you the same value back. You can do that one time or multiple times.
For example:
- 23 x 1 = 23
- 290 x 1 x 1 x 1 = 290
Multiplying by 1 is the first step in any unit conversion problem. The second step is to replace the number 1 with the conversion factor that is also equal to 1.
For example, if we want to convert 0.001 miles into kilometers we multiply 0.001 mi by the conversion factor of 1.609344 km1 mi
By replacing the number 1 with the conversion factor, miles are canceled out and we get the result in kilometers. And since the conversion factor is equal to 1, multiplying it with the original value won't change its magnitude and will only change its unit.
Based on this, we can conclude that 0.001 miles are equal to 0.00160934 kilometers.
Remember:
- When converting from miles to kilometers, we use 1.609344 km1 mi as a conversion factor.
Practice: miles to kilometers conversion
Try answering the following questions without using our custom conversion calculator. Knowing how to convert manually between miles and kilometers could prove to be useful, so give it a shot. Once you are confident you can convert miles to kilometers, there is no harm then in taking full advantage of the tools available to you.
How to convert 20 miles to kilometers?
We multiply 20 by the factor of 1
We replace the number 1 with the conversion factor for miles to kilometers
We multiply 20 miles by the conversion factor. Having miles in the denominator allows us to cancel out the undesired units (mi) leaving only kilometers in the final result.
Answer: There are 32.1869 kilometers in 20 miles
How many kilometers are in 370 miles?
Multiply 370 by the conversion factor. Make sure the unwanted unit (mi) is in the denominator.
This allows us to cancel out the miles (mi) and leave the kilometers (km)
Answer: There are 595.457 kilometers in 370 miles
kilometers to miles conversion
- 1 km = 11.609344 mi = 0.6213711922 mi
- To convert from kilometers to miles use our km to miles converter
miles conversion
Convert from Miles (mi):
- Miles to kilometers (mi to km)
1 mi = 1.609344 km - Miles to meters (mi to m)
1 mi = 1609.344 m - Miles to centimeters (mi to cm)
1 mi = 160934.4 cm - Miles to millimeters (mi to mm)
1 mi = 1.609344e+6 mm - Miles to micrometers (mi to μm)
1 mi = 1.609344e+9 μm - Miles to nanometers (mi to nm)
1 mi = 1.609344e+12 nm - Miles to nautical miles (mi to nmi)
1 mi = 1609.3441852 nmi = 0.8689762419 nmi - Miles to yards (mi to yd)
1 mi = 1760 yd - Miles to feet (mi to ft)
1 mi = 5280 ft - Miles to inches (mi to in)
1 mi = 63360 in
Convert to Miles (mi):
- Kilometers to miles (km to mi)
1 km = 11.609344 mi = 0.6213711922 mi - Meters to miles (m to mi)
1 m = 11609.344 mi = 0.0006213711922 mi - Centimeters to miles (cm to mi)
1 cm = 1160934.4 mi = 6.213711922e-6 mi - Millimeters to miles (mm to mi)
1 mm = 11.609344e+6 mi = 6.213711922e-7 mi - Micrometers to miles (μm to mi)
1 μm = 11.609344e+9 mi = 6.213711922e-10 mi - Nanometers to miles (nm to mi)
1 nm = 11.609344e+12 mi = 6.213711922e-13 mi - Nautical miles to miles (nmi to mi)
1 nmi = 18521609.344 mi = 1.150779448 mi - Yards to miles (yd to mi)
1 yd = 11760 mi = 0.0005681818182 mi - Feet to miles (ft to mi)
1 ft = 15280 mi = 0.0001893939394 mi - Inches to miles (in to mi)
1 in = 163360 mi = 1.578282828e-5 mi
kilometers conversion
Convert from Kilometers (km):
- Kilometers to meters (km to m)
1 km = 1000 m - Kilometers to centimeters (km to cm)
1 km = 100000 cm - Kilometers to millimeters (km to mm)
1 km = 1e+6 mm - Kilometers to micrometers (km to μm)
1 km = 1e+9 μm - Kilometers to nanometers (km to nm)
1 km = 1e+12 nm - Kilometers to nautical miles (km to nmi)
1 km = 11.852 nmi = 0.5399568035 nmi - Kilometers to miles (km to mi)
1 km = 11.609344 mi = 0.6213711922 mi - Kilometers to yards (km to yd)
1 km = 10.0009144 yd = 1093.613298 yd - Kilometers to feet (km to ft)
1 km = 10.0003048 ft = 3280.839895 ft - Kilometers to inches (km to in)
1 km = 12.54e-5 in = 39370.07874 in
Convert to Kilometers (km):
- Meters to kilometers (m to km)
1 m = 11000 km = 0.001 km - Centimeters to kilometers (cm to km)
1 cm = 1100000 km = 1e-5 km - Millimeters to kilometers (mm to km)
1 mm = 11e+6 km = 1e-6 km - Micrometers to kilometers (μm to km)
1 μm = 11e+9 km = 1e-9 km - Nanometers to kilometers (nm to km)
1 nm = 11e+12 km = 1e-12 km - Nautical miles to kilometers (nmi to km)
1 nmi = 1.852 km - Miles to kilometers (mi to km)
1 mi = 1.609344 km - Yards to kilometers (yd to km)
1 yd = 0.0009144 km - Feet to kilometers (ft to km)
1 ft = 0.0003048 km - Inches to kilometers (in to km)
1 in = 2.54e-5 km