Miles
0
Equivalent distance
Accurate conversion between kilometres (km) and miles for travel, running, cycling and navigation
Convert kilometres to miles instantly with precise calculations. Includes reverse miles to kilometres conversion, full formula reference, real-world distance examples, and comprehensive comparison tables for 2026.
Professional distance conversion for travel, navigation, running, cycling and international use
Convert kilometres to miles using the exact international definition: 1 mile = 1.609344 km exactly, therefore 1 km = 0.621371 miles. This factor is fixed by international agreement and does not change. Our tool also outputs metres, feet, yards, and nautical miles, giving you a complete multi-unit distance breakdown in one step.
Switch seamlessly between kilometres to miles and miles to kilometres conversion modes. Whether you are planning a road trip in a country that uses miles, converting a race distance from km to miles for a training plan, or checking a map distance expressed in unfamiliar units, both directions are handled instantly from a single input value with no manual formula required.
Essential for travellers, runners, cyclists, drivers, hikers, and navigation system users in 2026. The United States and United Kingdom use miles for road distances, while Australia, Europe, and most of the world use kilometres. Accurate distance conversion is critical for marathon training, GPS calibration, fuel consumption planning, and understanding foreign road signs and maps.
Select conversion direction and enter your distance value below
A kilometre (km) is a unit of length in the International System of Units (SI) equal to 1,000 metres. It is the standard unit for measuring road distances, geographic distances, and travel lengths in most countries around the world. A mile is an imperial unit of length used primarily in the United States and United Kingdom, equal to exactly 1.609344 kilometres or 5,280 feet by international definition.
While both units measure the same physical quantity — distance — their scales differ by a factor of approximately 1.609. This means a kilometre is shorter than a mile: it takes about 1.6 km to equal 1 mile, or conversely, 1 km is roughly 0.62 miles. In everyday terms, a 5 km run equals approximately 3.1 miles, and a 100-mile road trip covers about 160.9 km. Knowing how to convert kilometres to miles is essential for international travel, fitness tracking, and navigation in 2026. For related distance-based conversions, you may also need to convert acres to square metres for land area calculations.
1 mile = 1.609344 km exactly and 1 km = 0.621371 miles — These are exact values set by international definition in 1959. The commonly used approximation is 1 mile ≈ 1.6 km, but the precise factor is 1.609344 for all official, engineering, and navigation calculations.
The conversion between kilometres and miles uses exact multiplication or division based on the internationally defined mile. Because 1 mile = 1.609344 km precisely, the conversion factor is exact and carries no inherent rounding error.
Example 1: 42.195 km ÷ 1.609344 = 26.219 miles (marathon distance)
Example 2: 100 miles × 1.609344 = 160.934 km
Bar heights are proportional to illustrate relative distance values
Use this quick-reference table to look up common kilometres to miles conversions. All values use the exact factor of 1.609344 km per mile. For values not shown, use the calculator above.
| Kilometres (km) | Miles | Metres (m) | Feet (ft) | Nautical Miles |
|---|---|---|---|---|
| 0.5 km | 0.3107 miles | 500 m | 1,640.4 ft | 0.2700 nmi |
| 1 km | 0.6214 miles | 1,000 m | 3,280.8 ft | 0.5400 nmi |
| 2 km | 1.2427 miles | 2,000 m | 6,561.7 ft | 1.0799 nmi |
| 5 km | 3.1069 miles | 5,000 m | 16,404.2 ft | 2.6998 nmi |
| 10 km | 6.2137 miles | 10,000 m | 32,808.4 ft | 5.3996 nmi |
| 15 km | 9.3206 miles | 15,000 m | 49,212.6 ft | 8.0994 nmi |
| 20 km | 12.4274 miles | 20,000 m | 65,616.8 ft | 10.7991 nmi |
| 21.1 km | 13.1094 miles | 21,100 m | 69,225.7 ft | 11.3931 nmi |
| 25 km | 15.5343 miles | 25,000 m | 82,021.0 ft | 13.4989 nmi |
| 30 km | 18.6411 miles | 30,000 m | 98,425.2 ft | 16.1987 nmi |
| 42.195 km | 26.2188 miles | 42,195 m | 138,434.4 ft | 22.7835 nmi |
| 50 km | 31.0686 miles | 50,000 m | 164,041.9 ft | 26.9978 nmi |
| 100 km | 62.1371 miles | 100,000 m | 328,083.9 ft | 53.9957 nmi |
| 200 km | 124.2742 miles | 200,000 m | 656,167.9 ft | 107.9914 nmi |
| 500 km | 310.6856 miles | 500,000 m | 1,640,419.9 ft | 269.9784 nmi |
| 1,000 km | 621.3712 miles | 1,000,000 m | 3,280,839.9 ft | 539.9568 nmi |
Understanding how kilometres translate to miles is much easier when you relate the numbers to familiar distances. The following examples use well-known routes and race distances to give you an intuitive sense of scale.
The globally popular Parkrun event is exactly 5 km, which equals 3.107 miles. Parkrun events are held in parks across Australia, the UK, USA, and dozens of other countries. Runners in countries that use miles often need to convert this distance — a 5 km personal best of 25 minutes translates to running approximately 3.1 miles at an 8-minute-per-mile pace.
A standard 10 km road race equals exactly 6.214 miles. The 10 km (10K) is one of the most popular race distances worldwide. In countries that use miles, a 10 km race is sometimes described as a "6.2-mile" event. Elite runners complete 10 km in under 27 minutes, while the average recreational runner finishes in 50–65 minutes.
The official half marathon distance is 21.0975 km, which equals exactly 13.1094 miles — commonly rounded to 13.1 miles. The half marathon is the fastest-growing race distance globally. Completing a half marathon is a common benchmark goal for recreational runners, requiring typically 1.5 to 3 hours depending on fitness level.
The official marathon distance is 42.195 km, which equals exactly 26.2188 miles — commonly stated as 26.2 miles. This distance is the same worldwide for all certified marathons including Boston, New York, London, Berlin, and Chicago. The current men's world record is 2:00:35 set by Kelvin Kiptum in 2023.
The road distance between Sydney and Melbourne is approximately 878 km, equal to 545.7 miles. The London to Edinburgh drive is about 668 km (415 miles). Road trip distances quoted in km on Australian or European maps need to be converted to miles for drivers more familiar with US or UK distance units — about a 38% difference in the numbers.
The straight-line distance from London to New York is approximately 5,570 km, equal to 3,461 miles. Sydney to Los Angeles is about 12,077 km (7,504 miles). For international flight planning, navigation, and geography, converting between km and miles is routine since different mapping systems and airlines use different units in their published route data.
The kilometre and mile measure the same thing — linear distance — but on different scales used by different countries. Most of the world measures road distances in kilometres, while the United States and United Kingdom use miles on road signs, in navigation apps, and in everyday speech. Travellers, athletes, and professionals regularly need to convert between the two when crossing borders, reading foreign maps, or using apps built for a different market.
Our kilometres to miles converter is designed for instant use on any device including mobile phones and tablets. Follow these simple steps to get your distance conversion in seconds.
The National Institute of Standards and Technology provides the official international definition of the mile and kilometre used as the reference standard for this converter and all official distance calculations.
View NIST Reference →Need to convert to other distance or area units? Our full converter collection covers km to miles, acres to metres, and more — all free and mobile friendly for 2026.
More Distance Converters →Explore our complete range of unit converters for distance, area, energy, pressure, and time — designed for professionals, students, and everyday users in 2026.
Browse All Tools →