Miles to Kilometers Calculator

One international mile equals exactly 1,609.344 meters, which is the same as 1.609344 kilometers. This figure was established by the 1959 international yard and pound agreement, adopted by the US, UK, Australia, and Canada. To convert miles to kilometers, this calculator multiplies your input by 1.60934, a rounded form of 1.609344 that retains five significant figures of accuracy. For example, 5 miles multiplied by 1.60934 equals 8.0467 kilometers, and 26.2 miles (a marathon) equals approximately 42.165 kilometers. The conversion is commonly used for road travel, athletic training, fitness app synchronization, and comparing distances across countries that use different measurement systems. A quick mental approximation is to multiply miles by 1.6, though 1.60934 gives a more accurate result.