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Mile (mi)

Also called: statute mile, mi, international mile

Definition: The statute mile is a unit of length equal to 5,280 feet or 1,760 yards; NIST lists it as exactly 1,609.344 meters.

Updated October 29, 2026 · How we check facts

The mile (mi) is the unit used for road distances in the US and UK. The statute mile is 5,280 feet or 1,760 yards, and NIST lists it as exactly 1,609.344 meters (1.609344 km). The US customary system uses it alongside the foot, yard and inch.

Conversion

km = miles × 1.609344
miles = km ÷ 1.609344
feet = miles × 5280

Example

A 10 km run is 10 ÷ 1.609344 = 6.21 miles, or 52,800 feet for exactly 10 miles. A road sign reading 30 miles is 30 × 1.609344 = 48.28 km.

The feet in a mile guide has the full chart. The converters miles to km and miles to feet do the rest.

Statute mile vs nautical mile

A nautical mile is a different, longer unit used in sea and air navigation. NIST also lists a US survey mile of 1,609.347 m, now only for historic data.

Calculate it

Free toolMiles to KM ConverterMiles to km and back, plus race distances and pace.Open →Free toolSteps to Miles CalculatorConvert your step count into miles and km.Open →

Guides that explain it

Related terms

International FootThe international foot is the standard foot of 0.3048 meters exactly; it replaced the US survey foot for all uses from 1 January 2023, apart from historic data.US Customary UnitsUS customary units are the inch, foot, mile, ounce, pound, cup and gallon used for everyday measures in the United States; each is defined by an exact or fixed value in SI units.Fluid Ounce (fl oz)A fluid ounce is a unit of volume; one US fluid ounce is 29.57353 milliliters, and 8 of them make a US cup. It is not the same as the ounce used to weigh things.Gram (g)The gram is a metric unit of mass equal to one thousandth of a kilogram, the SI base unit of mass; about 0.03527 ounces.Ounce (avoirdupois)The avoirdupois ounce is the US and imperial unit of weight equal to 1/16 pound, or 28.34952 grams. It measures mass, unlike the fluid ounce, which measures volume.Pound (lb)The pound is a unit of weight equal to 16 ounces; NIST lists the avoirdupois pound as 0.4535924 kilograms, or about 453.59 grams.Tablespoon (tbsp)A tablespoon is a US customary unit of volume equal to 3 teaspoons, half a fluid ounce or 1/16 cup; NIST lists it as 14.78676 milliliters.Teaspoon (tsp)A teaspoon is a US customary unit of volume equal to 1/3 tablespoon or 1/6 fluid ounce; NIST lists it as 4.928922 milliliters and US labels round it to 5 mL.

Sources