What is a Mile?

The statute mile is the official road-distance unit in the United States, the United Kingdom, and Myanmar.

Overview

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.

Symbol

Convert Mile to all units

Live result

Meter1,609.344 m Kilometer1.609344 km Centimeter160,934.4 cm Millimeter1,609,344 mm Yard1,760 yd Foot5,280 ft Inch63,360 in Nautical Mile0.868976 nmi Micrometer1,609,344,000 µm Nanometer1,609,344,000,000 nm Light Year1.701 × 10^-13 ly Furlong8 fur Fathom880 ftm Angstrom16,093,440,000,000 Å

Relationship to Other Length Units

1 mi equals

Visual reference for how the mile relates to other length units. Each row links to the full converter for that pair.

1 mi=1,609.344 m 1 mi=1.609344 km 1 mi=160,934.4 cm 1 mi=1,609,344 mm 1 mi=1,760 yd 1 mi=5,280 ft 1 mi=63,360 in 1 mi=0.868976 nmi 1 mi=1,609,344,000 µm 1 mi=1,609,344,000,000 nm 1 mi=1.701 × 10^-13 ly 1 mi=8 fur

See all 15 length units in matrix view →

When Is the Mile Used?

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

Real-world examples

London to Edinburgh is about 400 miles by road. A marathon is 26.22 miles. US highways typically post 65–75 mph speed limits.

Tips for Using the Mile

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.

Common Mistakes

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.

Convert Mile to Other Length Units

Mile to Nautical Mile

1 mi = 0.868976 nmi

Mile to Micrometer

1 mi = 1,609,344,000 µm

Mile to Nanometer

1 mi = 1,609,344,000,000 nm

Mile to Light Year

1 mi = 1.701 × 10^-13 ly

1 mi = 16,093,440,000,000 Å

Convert Other Units to Mile

1 cm = 0.000006214 mi

Nautical Mile to Mile

1 nmi = 1.150779 mi

Micrometer to Mile

1 µm = 6.214 × 10^-10 mi

Nanometer to Mile

1 nm = 6.214 × 10^-13 mi

Light Year to Mile

1 ly = 5,878,606,400,000 mi

1 Å = 6.214 × 10^-14 mi

FAQ About the Mile

3 questions

What does the Mile (mi) measure?

The mile measures length. The statute mile is the official road-distance unit in the United States, the United Kingdom, and Myanmar.

When is the Mile used?

The mile is used in: US and UK motorway distances and speed limits; Car odometers in American and British vehicles; Track events (mile run, quarter-mile drag racing). London to Edinburgh is about 400 miles by road. A marathon is 26.22 miles. US highways typically post 65–75 mph speed limits.

How accurate are conversions involving the Mile?

All conversions on Units Converter use NIST SP 811 and BIPM reference values, accurate to 8 significant figures.