To convert km to miles, divide by 1.609344 (or multiply by 0.621371): 1 km = 0.621371 miles and 1 mile = 1.609344 km exactly. So 50 km is 31.07 miles, 20 km is 12.43 miles, 15 km is 9.32 miles and 3 km is 1.86 miles. The converter works both ways, splits the result into miles and yards, and includes a pace converter that turns minutes per kilometer into minutes per mile with race finish times.
It is meant for runners reading a metric race plan, drivers crossing between countries that sign roads in different units, cyclists comparing ride logs, and anyone checking an odometer or a travel distance. Below are anchored answers for the most-searched distances, a full 1–100 km table, larger distances up to 200,000 km, a miles to km table and a pace chart.
How to convert kilometers to miles
- Start with the distance in kilometers, for example 15 km.
- Divide by 1.609344: 15 ÷ 1.609344 = 9.320568.
- Round at the end. Two decimals (9.32 mi) are plenty for running and driving.
- For miles to kilometers, multiply instead: 9 mi × 1.609344 = 14.4841 km.
- To express the fraction of a mile as yards, multiply the decimal part by 1,760. A marathon is 26.2188 mi, which is 26 miles 385 yards.
The formula and why the factor is exact
miles = km ÷ 1.609344 and km = miles × 1.609344. NIST Handbook 44, Appendix C, lists 1 mile as 5,280 feet and as 1.609 344 kilometers, both marked "exactly". The exactness traces back to the 1959 Federal Register notice from the National Bureau of Standards, which fixed the yard at 0.9144 meter. A mile is 1,760 yards, and 1,760 × 0.9144 m = 1,609.344 m with no rounding. The reciprocal, 0.621371192…, never ends, which is why dividing by 1.609344 is more precise than multiplying by a rounded 0.62 or 0.621.
The international mile is the only mile this page uses. The older US survey mile, based on the survey foot of 1200/3937 m, is 1,609.347 m. The difference is 3.2 mm per mile, which matters only for legacy land survey data, not for roads, races or travel. A nautical mile is a different unit: 1,852 m, or 1.1508 statute miles.
Most-searched kilometer distances in miles
Each answer below uses the exact factor. Link to a specific one by adding its anchor to the URL.
50 km to miles
50 km = 31.0686 miles. Fifty kilometers is longer than a marathon (42.195 km), so a 50 km run counts as an ultramarathon; on a bike it is a moderate ride. Reversed, 50 miles is 80.467 km. At a 6:00 /km running pace, 50 km takes 5:00:00; at a 15:00 /km walking pace it takes 12:30:00.
20 km to miles
20 km = 12.4274 miles. Twenty kilometers is just under a half marathon, so it is a typical long training run before a 21.1 km race. Reversed, 20 miles is 32.187 km. At a 6:00 /km running pace, 20 km takes 2:00:00; at a 15:00 /km walking pace it takes 5:00:00.
3 km to miles
3 km = 1.8641 miles. Three kilometers is a short walk or a warm-up run; at a brisk 3 mph walk it takes about 37 minutes. Reversed, 3 miles is 4.828 km. At a 6:00 /km running pace, 3 km takes 18:00; at a 15:00 /km walking pace it takes 45:00.
15 km to miles
15 km = 9.3206 miles. A 15K is a popular road-race distance between the 10K and the half marathon. Reversed, 15 miles is 24.14 km. At a 6:00 /km running pace, 15 km takes 1:30:00; at a 15:00 /km walking pace it takes 3:45:00.
8 km to miles
8 km = 4.971 miles. An 8K is a little shorter than five miles, so it is easy to confuse with a 5-mile race. Reversed, 8 miles is 12.875 km. At a 6:00 /km running pace, 8 km takes 48:00; at a 15:00 /km walking pace it takes 2:00:00.
30 km to miles
30 km = 18.6411 miles. A 30 km run is a classic marathon long-run distance, about 71% of the full 42.195 km. Reversed, 30 miles is 48.28 km. At a 6:00 /km running pace, 30 km takes 3:00:00; at a 15:00 /km walking pace it takes 7:30:00.
200 km to miles
200 km = 124.2742 miles. Two hundred kilometers is a long day of cycling or roughly two hours of highway driving. Reversed, 200 miles is 321.869 km. At a constant 100 km/h (62.1 mph) it takes 2 hours.
500 km to miles
500 km = 310.6856 miles. Five hundred kilometers is a long day of driving with stops. Reversed, 500 miles is 804.672 km. At a constant 100 km/h (62.1 mph) it takes 5 hours.
7 km to miles
7 km = 4.3496 miles. Seven kilometers is a common park-loop or lake-loop length and a comfortable easy run. Reversed, 7 miles is 11.265 km. At a 6:00 /km running pace, 7 km takes 42:00; at a 15:00 /km walking pace it takes 1:45:00.
9 km to miles
9 km = 5.5923 miles. Nine kilometers sits between a 5-mile run and a 10K, and people often search the reverse, 9 miles in km, too. Reversed, 9 miles is 14.484 km. At a 6:00 /km running pace, 9 km takes 54:00; at a 15:00 /km walking pace it takes 2:15:00.
11 km to miles
11 km = 6.8351 miles. Eleven kilometers is a little longer than a 10K race. Reversed, 11 miles is 17.703 km. At a 6:00 /km running pace, 11 km takes 1:06:00; at a 15:00 /km walking pace it takes 2:45:00.
16 km to miles
16 km = 9.9419 miles. Sixteen kilometers is almost exactly ten miles, the distance of many 10-mile road races. Reversed, 16 miles is 25.75 km. At a 6:00 /km running pace, 16 km takes 1:36:00; at a 15:00 /km walking pace it takes 4:00:00.
12 km to miles
12 km = 7.4565 miles. Twelve kilometers is a frequent long-run or hike distance in metric countries. Reversed, 12 miles is 19.312 km. At a 6:00 /km running pace, 12 km takes 1:12:00; at a 15:00 /km walking pace it takes 3:00:00.
40 km to miles
40 km = 24.8548 miles. Forty kilometers is just short of a marathon distance. Reversed, 40 miles is 64.374 km. At a 6:00 /km running pace, 40 km takes 4:00:00; at a 15:00 /km walking pace it takes 10:00:00.
6 km to miles
6 km = 3.7282 miles. A 6K sits between a 5K and a 10K and is a moderate run for most people. Reversed, 6 miles is 9.656 km. At a 6:00 /km running pace, 6 km takes 36:00; at a 15:00 /km walking pace it takes 1:30:00.
35 km to miles
35 km = 21.748 miles. Thirty-five kilometers is a very long marathon-training run or a full day of hiking. Reversed, 35 miles is 56.327 km. At a 6:00 /km running pace, 35 km takes 3:30:00; at a 15:00 /km walking pace it takes 8:45:00.
25 km to miles
25 km = 15.5343 miles. Twenty-five kilometers is a little more than a half marathon plus a 4 km cool-down. Reversed, 25 miles is 40.234 km. At a 6:00 /km running pace, 25 km takes 2:30:00; at a 15:00 /km walking pace it takes 6:15:00.
70,000 km to miles
70,000 km = 43,496 miles. Seventy thousand kilometers is the kind of number seen on a used car's odometer. Reversed, 70,000 miles is 112,654.08 km. At a constant 100 km/h (62.1 mph) it takes 700 hours.
9 miles to km
9 miles = 14.4841 km. Multiply 9 by 1.609344. Nine miles is a little under a 15K race (9.32 mi), so a 15K is about 0.3 miles longer.
6K in miles
A 6K is 3.728 miles. The K stands for kilometers, so 6K, 6 km and 6,000 m are the same distance.
Race distances in miles
The marathon and half marathon distances are those published by World Athletics: 42.195 km and 21.0975 km. A 5K and 10K are simply 5,000 m and 10,000 m. Finish times are shown for three even paces.
| Race | Km | Miles | At 5:00 /km | At 6:00 /km | At 7:00 /km |
|---|---|---|---|---|---|
| 5K | 5 | 3.107 | 25:00 | 30:00 | 35:00 |
| 8K | 8 | 4.971 | 40:00 | 48:00 | 56:00 |
| 10K | 10 | 6.214 | 50:00 | 1:00:00 | 1:10:00 |
| 15K | 15 | 9.321 | 1:15:00 | 1:30:00 | 1:45:00 |
| Half marathon | 21.0975 | 13.109 | 1:45:29 | 2:06:35 | 2:27:41 |
| Marathon | 42.195 | 26.219 | 3:30:59 | 4:13:10 | 4:55:22 |
| 50K ultra | 50 | 31.069 | 4:10:00 | 5:00:00 | 5:50:00 |
Pace: min/km to min/mile
A pace is time per unit of distance, so a mile pace is longer than a kilometer pace by the same 1.609344 factor. Convert the pace to seconds, multiply by 1.609344, then turn it back into minutes and seconds. A 5:30 /km pace is 330 s × 1.609344 = 531.1 s, which is 8:51 per mile. The pace converter in the tool above accepts m:ss or decimal minutes.
| Per km | Per mile | km/h | mph | 10K time |
|---|---|---|---|---|
| 3:00 | 4:50 | 20 | 12.43 | 30:00 |
| 3:15 | 5:14 | 18.46 | 11.47 | 32:30 |
| 3:30 | 5:38 | 17.14 | 10.65 | 35:00 |
| 3:45 | 6:02 | 16 | 9.94 | 37:30 |
| 4:00 | 6:26 | 15 | 9.32 | 40:00 |
| 4:15 | 6:50 | 14.12 | 8.77 | 42:30 |
| 4:30 | 7:15 | 13.33 | 8.28 | 45:00 |
| 4:45 | 7:39 | 12.63 | 7.85 | 47:30 |
| 5:00 | 8:03 | 12 | 7.46 | 50:00 |
| 5:15 | 8:27 | 11.43 | 7.1 | 52:30 |
| 5:30 | 8:51 | 10.91 | 6.78 | 55:00 |
| 5:45 | 9:15 | 10.43 | 6.48 | 57:30 |
| 6:00 | 9:39 | 10 | 6.21 | 1:00:00 |
| 6:15 | 10:04 | 9.6 | 5.97 | 1:02:30 |
| 6:30 | 10:28 | 9.23 | 5.74 | 1:05:00 |
| 6:45 | 10:52 | 8.89 | 5.52 | 1:07:30 |
| 7:00 | 11:16 | 8.57 | 5.33 | 1:10:00 |
| 7:15 | 11:40 | 8.28 | 5.14 | 1:12:30 |
| 7:30 | 12:04 | 8 | 4.97 | 1:15:00 |
| 7:45 | 12:28 | 7.74 | 4.81 | 1:17:30 |
| 8:00 | 12:52 | 7.5 | 4.66 | 1:20:00 |
| 8:15 | 13:17 | 7.27 | 4.52 | 1:22:30 |
| 8:30 | 13:41 | 7.06 | 4.39 | 1:25:00 |
| 8:45 | 14:05 | 6.86 | 4.26 | 1:27:30 |
| 9:00 | 14:29 | 6.67 | 4.14 | 1:30:00 |
| Per mile | Per km | mph | Marathon time |
|---|---|---|---|
| 5:00 | 3:06 | 12 | 2:11:06 |
| 5:30 | 3:25 | 10.91 | 2:24:12 |
| 6:00 | 3:44 | 10 | 2:37:19 |
| 6:30 | 4:02 | 9.23 | 2:50:25 |
| 7:00 | 4:21 | 8.57 | 3:03:32 |
| 7:30 | 4:40 | 8 | 3:16:38 |
| 8:00 | 4:58 | 7.5 | 3:29:45 |
| 8:30 | 5:17 | 7.06 | 3:42:52 |
| 9:00 | 5:36 | 6.67 | 3:55:58 |
| 9:30 | 5:54 | 6.32 | 4:09:05 |
| 10:00 | 6:13 | 6 | 4:22:11 |
| 10:30 | 6:31 | 5.71 | 4:35:18 |
| 11:00 | 6:50 | 5.45 | 4:48:24 |
| 11:30 | 7:09 | 5.22 | 5:01:31 |
| 12:00 | 7:27 | 5 | 5:14:38 |
| 12:30 | 7:46 | 4.8 | 5:27:44 |
| 13:00 | 8:05 | 4.62 | 5:40:51 |
Worked examples
A 70,000 km car
70,000 ÷ 1.609344 = 43,496 miles. When comparing a used car listed in kilometers with one listed in miles, convert both to the same unit first; a rounded 0.6 factor would understate this odometer by about 1,496 miles.
A 120 km drive at 90 km/h
Distance: 120 km = 74.56 miles. Time: 120 ÷ 90 = 1.333 h, or 1 h 20 min. Speed and distance convert with the same factor, so for speed conversions use the km/h to mph converter.
Training for a half marathon in miles
A plan says "run 16 km at 6:15 /km". Distance: 9.94 miles. Pace: 375 s × 1.609344 = 604 s, or 10:04 per mile. Time: 16 × 375 s = 1:40:00.
Kilometers to miles chart: 1 to 100 km
| Km | Miles | Km | Miles |
|---|---|---|---|
| 1 km | 0.621 | 51 km | 31.69 |
| 2 km | 1.243 | 52 km | 32.311 |
| 3 km | 1.864 | 53 km | 32.933 |
| 4 km | 2.485 | 54 km | 33.554 |
| 5 km | 3.107 | 55 km | 34.175 |
| 6 km | 3.728 | 56 km | 34.797 |
| 7 km | 4.35 | 57 km | 35.418 |
| 8 km | 4.971 | 58 km | 36.04 |
| 9 km | 5.592 | 59 km | 36.661 |
| 10 km | 6.214 | 60 km | 37.282 |
| 11 km | 6.835 | 61 km | 37.904 |
| 12 km | 7.456 | 62 km | 38.525 |
| 13 km | 8.078 | 63 km | 39.146 |
| 14 km | 8.699 | 64 km | 39.768 |
| 15 km | 9.321 | 65 km | 40.389 |
| 16 km | 9.942 | 66 km | 41.01 |
| 17 km | 10.563 | 67 km | 41.632 |
| 18 km | 11.185 | 68 km | 42.253 |
| 19 km | 11.806 | 69 km | 42.875 |
| 20 km | 12.427 | 70 km | 43.496 |
| 21 km | 13.049 | 71 km | 44.117 |
| 22 km | 13.67 | 72 km | 44.739 |
| 23 km | 14.292 | 73 km | 45.36 |
| 24 km | 14.913 | 74 km | 45.981 |
| 25 km | 15.534 | 75 km | 46.603 |
| 26 km | 16.156 | 76 km | 47.224 |
| 27 km | 16.777 | 77 km | 47.846 |
| 28 km | 17.398 | 78 km | 48.467 |
| 29 km | 18.02 | 79 km | 49.088 |
| 30 km | 18.641 | 80 km | 49.71 |
| 31 km | 19.263 | 81 km | 50.331 |
| 32 km | 19.884 | 82 km | 50.952 |
| 33 km | 20.505 | 83 km | 51.574 |
| 34 km | 21.127 | 84 km | 52.195 |
| 35 km | 21.748 | 85 km | 52.817 |
| 36 km | 22.369 | 86 km | 53.438 |
| 37 km | 22.991 | 87 km | 54.059 |
| 38 km | 23.612 | 88 km | 54.681 |
| 39 km | 24.233 | 89 km | 55.302 |
| 40 km | 24.855 | 90 km | 55.923 |
| 41 km | 25.476 | 91 km | 56.545 |
| 42 km | 26.098 | 92 km | 57.166 |
| 43 km | 26.719 | 93 km | 57.788 |
| 44 km | 27.34 | 94 km | 58.409 |
| 45 km | 27.962 | 95 km | 59.03 |
| 46 km | 28.583 | 96 km | 59.652 |
| 47 km | 29.204 | 97 km | 60.273 |
| 48 km | 29.826 | 98 km | 60.894 |
| 49 km | 30.447 | 99 km | 61.516 |
| 50 km | 31.069 | 100 km | 62.137 |
Larger distances: 110 to 200,000 km
| Km | Miles |
|---|---|
| 110 km | 68.4 |
| 120 km | 74.6 |
| 125 km | 77.7 |
| 130 km | 80.8 |
| 140 km | 87 |
| 150 km | 93.2 |
| 160 km | 99.4 |
| 175 km | 108.7 |
| 180 km | 111.8 |
| 200 km | 124.3 |
| 220 km | 136.7 |
| 250 km | 155.3 |
| 280 km | 174 |
| 300 km | 186.4 |
| 320 km | 198.8 |
| 350 km | 217.5 |
| 400 km | 248.5 |
| 450 km | 279.6 |
| 500 km | 310.7 |
| 600 km | 372.8 |
| 700 km | 435 |
| 750 km | 466 |
| 800 km | 497.1 |
| 900 km | 559.2 |
| 1,000 km | 621 |
| 1,500 km | 932 |
| 2,000 km | 1,243 |
| 2,500 km | 1,553 |
| 3,000 km | 1,864 |
| 5,000 km | 3,107 |
| 10,000 km | 6,214 |
| 20,000 km | 12,427 |
| 50,000 km | 31,069 |
| 70,000 km | 43,496 |
| 100,000 km | 62,137 |
| 150,000 km | 93,206 |
| 200,000 km | 124,274 |
Fractions of a kilometer in miles
| Km | Miles | Yards | Feet |
|---|---|---|---|
| 0.1 km (100 m) | 0.0621 | 109 | 328 |
| 0.2 km (200 m) | 0.1243 | 219 | 656 |
| 0.25 km (250 m) | 0.1553 | 273 | 820 |
| 0.4 km (400 m) | 0.2485 | 437 | 1,312 |
| 0.5 km (500 m) | 0.3107 | 547 | 1,640 |
| 0.6 km (600 m) | 0.3728 | 656 | 1,969 |
| 0.75 km (750 m) | 0.466 | 820 | 2,461 |
| 0.8 km (800 m) | 0.4971 | 875 | 2,625 |
| 1.5 km (1,500 m) | 0.9321 | 1,640 | 4,921 |
| 2.5 km (2,500 m) | 1.5534 | 2,734 | 8,202 |
| 3.5 km (3,500 m) | 2.1748 | 3,828 | 11,483 |
| 4.5 km (4,500 m) | 2.7962 | 4,921 | 14,764 |
| 5.5 km (5,500 m) | 3.4175 | 6,015 | 18,045 |
| 7.5 km (7,500 m) | 4.6603 | 8,202 | 24,606 |
| 12.5 km (12,500 m) | 7.7671 | 13,670 | 41,010 |
Miles to kilometers chart
| Miles | Km |
|---|---|
| 0.25 mi | 0.402 |
| 0.5 mi | 0.805 |
| 0.75 mi | 1.207 |
| 1 mi | 1.609 |
| 1.5 mi | 2.414 |
| 2 mi | 3.219 |
| 2.5 mi | 4.023 |
| 3 mi | 4.828 |
| 4 mi | 6.437 |
| 5 mi | 8.047 |
| 6 mi | 9.656 |
| 7 mi | 11.265 |
| 8 mi | 12.875 |
| 9 mi | 14.484 |
| 10 mi | 16.093 |
| 12 mi | 19.312 |
| 13.1 mi | 21.082 |
| 15 mi | 24.14 |
| 20 mi | 32.187 |
| 25 mi | 40.234 |
| 26.2 mi | 42.165 |
| 30 mi | 48.28 |
| 40 mi | 64.374 |
| 50 mi | 80.467 |
| 60 mi | 96.561 |
| 70 mi | 112.654 |
| 75 mi | 120.701 |
| 80 mi | 128.748 |
| 90 mi | 144.841 |
| 100 mi | 160.934 |
| 150 mi | 241.402 |
| 200 mi | 321.869 |
| 250 mi | 402.336 |
| 300 mi | 482.803 |
| 400 mi | 643.738 |
| 500 mi | 804.672 |
| 1000 mi | 1,609.344 |
Common mistakes
- Multiplying when you should divide. Miles are longer than kilometers, so the number of miles is always smaller. If 20 km comes out as 32, you multiplied by 1.609 instead of dividing.
- Using 0.6 for long distances. 0.6 is 3.4% low. On 500 km that is 10.7 miles of error, enough to misjudge a fuel stop.
- Treating a half marathon as 21 km. It is 21.0975 km, or 13.1094 miles. Watches that auto-lap every kilometer will show a little extra at the finish.
- Confusing statute and nautical miles. Sea and air navigation use the 1,852 m nautical mile; road distances use the 1,609.344 m statute mile.
- Converting pace with the wrong direction. A pace per mile is always longer (slower-looking) than the same pace per km. 5:00 /km is 8:03 /mi, not 3:06.
Related tools: the km/h to mph converter for speeds, the steps to miles calculator to turn a step count into distance, meters to feet for shorter lengths, and the fuel economy converter for L/100 km and mpg.
Frequently asked questions
How do you convert km to miles?
Divide kilometers by 1.609344, or multiply by 0.621371. For example, 10 km ÷ 1.609344 = 6.2137 miles. The factor is exact because the international mile is defined as exactly 1,609.344 meters.
How many miles is 50 km?
50 km is 31.0686 miles, about 31 miles. In the other direction, 50 miles is 80.467 km.
How many miles is 20 km?
20 km is 12.4274 miles, just under 12.5 miles. That is 95% of a half marathon.
What is 15 km in miles?
15 km = 9.3206 miles, about 9.3 miles. A 15K race at 6:00 per km takes 1:30:00.
How far is 3 km in miles?
3 km is 1.8641 miles, a little under 2 miles (9,843 feet).
How many km is 9 miles?
9 miles is 14.484 km. Going the other way, 9 km is 5.592 miles.
How many miles is 500 km?
500 km is 310.69 miles. At a steady 100 km/h that is 5 hours of driving, or about 62 mph for the same 5 hours.
How many miles is a 5K, 10K, half marathon and marathon?
5K = 3.107 mi, 10K = 6.214 mi, half marathon (21.0975 km) = 13.109 mi, marathon (42.195 km) = 26.219 mi, which is 26 miles 385 yards.
How do I convert min/km pace to min/mile?
Multiply the seconds per km by 1.609344. A 5:00 /km pace is 300 s × 1.609344 = 482.8 s, or 8:03 per mile. To go back, divide: 8:00 /mi is 4:58 /km.
Is 1 km more or less than a mile?
Less. One kilometer is 0.6214 mile, so a mile is about 1.6 km. It takes 1.609 km to make a mile.
What is the quick mental trick for km to miles?
Multiply by 6 and divide by 10, then add a little. 30 km × 0.6 = 18, while the exact answer is 18.64 miles, so 0.6 is about 3.5% low. The Fibonacci trick (5 mi ≈ 8 km, 8 mi ≈ 13 km) is close too: 8 km is 4.97 mi.
Sources & method
- NIST Handbook 44 (2026), Appendix C — 1 mile = 5,280 feet = 1.609 344 kilometers (exactly)
- NIST SP 811, Appendix B.8 — mile to meter 1.609 344 E+03 and mile per hour to km/h 1.609 344 (bold = exact)
- Federal Register Notice 59-5442 (1959) — Refinement of values for the yard and the pound (1 yard = 0.9144 m exactly)
- World Athletics — Marathon: 26 miles 385 yards (42.195 km)
- World Athletics — Half Marathon: 21.0975 km (13.1094 miles)
Results are estimates for general information. Found an error? It helps everyone — see our methodology.