Convert Mile to Kilometer (mi → km)

Converting miles to kilometers is straightforward: multiply by the conversion factor. Follow these three steps to do it by hand or in your head.

1. 1
   Take your value in miles

   Start with the number of miles (mi) you want to convert.
2. 2
   Multiply by 1.609344

   The conversion factor from mi to km is 1.609344. Multiply your value by this number.
3. 3
   Read the result in kilometers

   The result is your value in kilometers (km).

Multiply the value in miles by 1.609344. For the reverse direction, multiply by 0.621371.

• ✓1 mile ≈ 1.6 km. Mental trick: add 60% to the mile figure.
• ✓A running mile in 4 minutes is an elite pace; a recreational runner covers it in 8–10 minutes.
• ✓US cars show mph only. Check the speedometer scale before assuming the units.

• ✗Confusing statute miles (1.609 km) with nautical miles (1.852 km) — a 15% gap.
• ✗Reading a US speedometer as km/h — 70 mph is 112 km/h, not 70.
• ✗Using 1.5 or 1.6 for quick conversions when precision matters — use 1.609 for engineering or legal documents.

What is the Mile?

The statute mile equals exactly 1,609.344 meters since the international yard agreement of 1959. The unit traces back to the Roman 'mille passuum' (one thousand paces), each pace being roughly 5 Roman feet, giving 5,000 Roman feet. The modern mile evolved through medieval England, where it was standardized to 5,280 feet by Queen Elizabeth I in 1593. Today it remains the official road-distance unit in the United States, the United Kingdom, and Myanmar. American and British road signs, car speedometers, and athletic tracks (the famous 1-mile run) all use the mile. Distinct from the nautical mile (1,852 m), the statute mile is sometimes called the 'land mile.' London to Edinburgh by road is about 400 miles, and a marathon is exactly 26.22 miles.

• US and UK motorway distances and speed limits
• Car odometers in American and British vehicles
• Track events (mile run, quarter-mile drag racing)

What is the Kilometer?

The kilometer equals exactly 1,000 meters and is the international standard unit for road distances, geography, and travel. Adopted as part of the metric system in the 1790s, it became the dominant road-distance unit worldwide except in the United States, the United Kingdom (which uses miles for road signs), and Myanmar. Speed limits across Europe, Asia, Australia, Africa, and Latin America are expressed in km/h. The kilometer's relationship to the meter is decimal and exact, making it ideal for scientific work. A kilometer takes a healthy adult about 12 minutes to walk and roughly 1,250 average steps. Geographic distances — from city blocks to airline routes — are typically given in kilometers, with the Earth's equatorial circumference measuring approximately 40,075 km.

• Motorway distances on road signs across Europe
• Marathon and long-distance running (marathon = 42.195 km)
• GPS navigation and driving directions globally