Miles to Kilometers Converter

How to convert miles to kilometers

1. 1

   Take your value

   Start with your value in miles.

2. 2

   Multiply by 1.60934

   Multiply the mile value by 1.60934. This is the exact conversion factor from miles to kilometers.

3. 3

   Read the result

   The product is your value in kilometers. For example, 5 mi × 1.60934 = 8.04672 km.

Conversion formula

The exact factor from miles to kilometers is 1.60934.

Kilometers = Miles × 1.60934

Miles to Kilometers conversion table

Fifty common reference values, hand-picked for skim utility. Use the calculator above for any value not listed.

Real-world reference

A standard US Interstate exit interval is about 1 mile. A 5K race is approximately 3.1 miles. In kilometers, that gives you: 1 mi = 1.60934 km, 10 mi = 16.0934 km, 100 mi = 160.934 km.

Frequently asked questions

How many kilometers are in 1 mile?

1 mile equals 1.60934 kilometers.

How do I convert miles to kilometers?

Multiply the mile value by 1.60934. So x mi × 1.60934 = the equivalent in km.

What is 5 miles in kilometers?

5 miles equals 8.04672 kilometers.

What is 10 miles in kilometers?

10 miles equals 16.0934 kilometers.

What is 100 miles in kilometers?

100 miles equals 160.934 kilometers.

How do I convert back from kilometers to miles?

Multiply the kilometer value by 0.621371. For example, 1 km = 0.621371 mi.

Is the mile bigger than the kilometer?

Yes. 1 mile is larger than 1 kilometer — specifically 1.60934 times larger.

Are these conversion factors exact?

Yes. Since the 1959 international yard and pound agreement, imperial/US units are defined exactly in terms of metric units, so the factor used here (1.60934) is exact within IEEE 754 double precision.

About the mile and the kilometer

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units (SI)
• BIPM — SI Brochure (9th edition)
• Reverse: km to mi
• All length converters