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One mile is exactly 1.609344 km; 10 km is 6.21 miles. Convert km to miles and miles to km, plus meters, feet, yards, and nautical miles, with the calculation shown for each. Free, with no sign-up, right in your browser.
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Result
6.214 mi
10 km is 6.214 mi.
Calculation steps
Example result
This is what the results look like. Enter your own values above to see the result instantly.
km to miles
6.214 mi
10 km is 6.214 mi.
Miles to km
42.165 km
26.2 mi is 42.165 km.
Meters to feet
328.084 ft
100 m is 328.084 ft.
Nautical miles to km
18.52 km
10 nmi is 18.52 km.
Why use this distance converter?
How this converter differs from a single input field
Two linked fields
Type in the km or miles field: the other field updates instantly, without a button or switching direction. You can choose either unit freely.
Nine units of length
Kilometers, miles, meters, feet, yards, nautical miles, inches, centimeters, and millimeters: convert one distance to every unit at once, and swap units with one click.
Running distances
5 km, 10 km, half marathon, and marathon in miles: The table converts common running distances. You can also use the calculator for your own distance.
km/h and mph
Km/h and mph relate to each other just like km and miles. The speed tables show the speed limits and travel speeds you see in cars and on signs.
Exact instead of rounded
By definition, one mile is exactly 1.609344 km. The calculator uses this definition instead of a rounded approximation such as 0.62, and rounds only for display.
Calculation steps and link
For each result, the calculator shows the formula with your numbers. Copy the result as a sentence or share a link with your values.
How it works
Three steps from distance to result.
Step 1
Choose above whether to compare two units or see a distance in all nine units at once.
Step 2
Enter the distance in a field or click a number such as 10 under “Common values.” Both commas and periods work as decimal separators, and the result appears instantly. Use the selectors below to change units; the arrow button swaps them.
Step 3
Read the result and calculation steps, set the decimal places (0 to 4 or Auto), then copy the result or a link with your values.
Tables
The most common values at a glance: kilometers, miles, meters, feet, yards, running distances, and speeds.
| km | mi |
|---|---|
| 1 | 0.6214 |
| 2 | 1.243 |
| 3 | 1.864 |
| 5 | 3.107 |
| 10 | 6.214 |
| 15 | 9.321 |
| 20 | 12.43 |
| 25 | 15.53 |
| 30 | 18.64 |
| 40 | 24.85 |
| 50 | 31.07 |
| 100 | 62.14 |
| 200 | 124.27 |
| 500 | 310.69 |
| mi | km |
|---|---|
| 1 | 1.609 |
| 2 | 3.219 |
| 3 | 4.828 |
| 5 | 8.047 |
| 10 | 16.09 |
| 15 | 24.14 |
| 20 | 32.19 |
| 25 | 40.23 |
| 30 | 48.28 |
| 50 | 80.47 |
| 75 | 120.7 |
| 100 | 160.93 |
| 200 | 321.87 |
| 500 | 804.67 |
| m | ft | yd |
|---|---|---|
| 1 | 3.281 | 1.094 |
| 2 | 6.562 | 2.187 |
| 5 | 16.4 | 5.468 |
| 10 | 32.81 | 10.94 |
| 20 | 65.62 | 21.87 |
| 50 | 164.04 | 54.68 |
| 100 | 328.08 | 109.36 |
| 200 | 656.17 | 218.72 |
| 400 | 1,312.34 | 437.45 |
| 1,000 | 3,280.84 | 1,093.61 |
| ft | m |
|---|---|
| 1 | 0.3048 |
| 2 | 0.6096 |
| 5 | 1.524 |
| 10 | 3.048 |
| 20 | 6.096 |
| 50 | 15.24 |
| 100 | 30.48 |
| 500 | 152.4 |
| 1,000 | 304.8 |
| 5,280 | 1,609.34 |
| yd | m |
|---|---|
| 1 | 0.9144 |
| 5 | 4.572 |
| 10 | 9.144 |
| 25 | 22.86 |
| 50 | 45.72 |
| 100 | 91.44 |
| 200 | 182.88 |
| 400 | 365.76 |
| Route | km | mi |
|---|---|---|
| 5 km run | 5 | 3.107 |
| 10 km run | 10 | 6.214 |
| Half marathon | 21.0975 | 13.11 |
| Marathon | 42.195 | 26.22 |
| km/h | mph |
|---|---|
| 30 | 18.64 |
| 50 | 31.07 |
| 60 | 37.28 |
| 80 | 49.71 |
| 100 | 62.14 |
| 120 | 74.56 |
| 130 | 80.78 |
| 150 | 93.21 |
| mph | km/h |
|---|---|
| 20 | 32.19 |
| 30 | 48.28 |
| 40 | 64.37 |
| 50 | 80.47 |
| 60 | 96.56 |
| 65 | 104.61 |
| 70 | 112.65 |
| 80 | 128.75 |
Conversion
One mile is exactly 1.609344 kilometers. Converting in either direction takes just one calculation.
km to miles
mi = km × 0,621371
Example: 50 km × 0.621371 = 31.069 mi
Miles to km
km = mi × 1.609344
Example: 26.2 mi × 1.609344 = 42.165 km
Yes, for a rough estimate. For 50 km, multiplying by 0.6 gives 30 miles; the exact calculation gives 31.069 miles. That's about 3.4 percent too low, a noticeable difference over longer distances.
Since the 1959 international yard and pound agreement, the yard has been defined as exactly 0.9144 meters. A mile has 1,760 yards, making it exactly 1,609.344 meters. By contrast, 0.621371 in the opposite direction is a rounded approximation.
A foot is exactly 0.3048 m, and a yard is exactly 0.9144 m. A mile has 5,280 feet or 1,760 yards. So 100 m is 328.084 feet.
One nautical mile is exactly 1.852 km, or 1.151 miles. Ships and aircraft use it: one knot is one nautical mile per hour, or 1.852 km/h.
Because km/h and mph are based on the same kilometers and miles, the same factor applies: 100 km/h is 62.137 mph, and 60 mph is 96.561 km/h.
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FAQ
Quick answers about converting km, miles, meters and feet.
Multiply the kilometers by 0.621371. So 50 km is 50 × 0.621371 = 31.07 miles. In the calculator, enter the number in the km field; the miles field fills in immediately, with the calculation shown below.
Multiply the miles by 1.609344. So 100 miles is 160.93 km, and 26.2 miles is exactly 42.1648128 km. In the calculator, enter the number in the miles field, and the km field fills in immediately.
One mile is exactly 1.609344 km, or 1,609.344 m. Since the international agreement of 1959, a yard has been defined as exactly 0.9144 m and a mile as 1,760 yards. The reverse factor of 0.621371, however, is rounded.
A marathon is 42.195 km, or 26.22 miles. A half marathon (21.0975 km) is 13.11 miles, 10 km is 6.21 miles, and 5 km is 3.11 miles. The “Running distances in miles” table shows all four, and you can enter 42.195 in the calculator with one click under “Common values.”
A foot is exactly 0.3048 m, and a yard is exactly 0.9144 m. To get feet, divide meters by 0.3048: 100 m is 328.08 feet. For yards, divide by 0.9144: 100 m is 109.36 yards. Conversely, 100 feet is 30.48 m and 100 yards is 91.44 m. A mile has 5,280 feet or 1,760 yards.
mph stands for miles per hour and is not the same as km/h. The conversion factor is the same as for kilometers and miles: Multiply km/h by 0.621371, so 100 km/h is 62.14 mph. Conversely, 1 mph is exactly 1.609344 km/h, and 60 mph is 96.56 km/h. The speed tables show common values.
The calculator uses the international mile, exactly 1,609.344 m. This is the mile used on road signs in the US and UK. It does not convert frequent-flyer miles. The nautical mile is a separate unit of exactly 1,852 m, or 1.15078 miles. One knot is one nautical mile per hour, or 1.852 km/h. You can select the nautical mile as a separate unit in the calculator.
No. The calculator supports only international miles and nautical miles. Historical units such as the old German mile varied by region and are not included. The Scandinavian mil, equal to 10 km, is also a different unit from the mile: 10 km is 6.21 miles.
Yes. You can enter decimals with a comma or a period, such as 12,5 or 12.5. Under “Decimal places,” choose 0 to 4 places or Auto for the display. The calculation uses the exact definitions of the units and rounds only for display.
No. Conversion takes place entirely in your browser; the calculator doesn't send your values to a server. Your values appear only in your browser's address bar (and therefore its history), so you can share them as a link using “Share link.”
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