km to miles Converter
Unit Converter
Instant · Precise · Universal
32 units available
6 categories total
How to Convert Kilometer to Mile
To convert km to miles: multiply by 0.621371. To convert miles to km: multiply by 1.60934.
1 km = 1,000 m = 100,000 cm = 0.621371 miles. There are 1.60934 km in one mile.
For example, 1 Kilometer (km) = 0.6213711922 Mile (mi).
Kilometer to Mile — Common Values
| Kilometer (km) | Mile (mi) |
|---|---|
| 0.1 | 0.06213711922 |
| 0.5 | 0.3106855961 |
| 1 | 0.6213711922 |
| 2 | 1.242742384 |
| 5 | 3.106855961 |
| 10 | 6.213711922 |
| 25 | 15.53427981 |
| 50 | 31.06855961 |
| 100 | 62.13711922 |
| 500 | 310.6855961 |
| 1000 | 621.3711922 |
About Kilometer (km)
Definition
The kilometer is a unit of length equal to 1,000 meters, commonly used to express distances between geographic locations.
Mathematical Relationship
1 km = 1,000 m = 100,000 cm = 0.621371 miles. There are 1.60934 km in one mile.
Conversion Formula
To convert km to miles: multiply by 0.621371. To convert miles to km: multiply by 1.60934.
Practical Applications
Road signs, marathon distances (42.195 km), GPS navigation, geographic mapping, and aviation flight distances.
Interesting Facts
A marathon is 42.195 km. The circumference of Earth is approximately 40,075 km at the equator.
Common Mistakes
Assuming 1 km = 1 mile. A kilometer is only about 62% of a mile. Also, speed: 100 km/h ≈ 62 mph, not 100 mph.
Educational Tips
Quick approximation: multiply km by 0.6 to estimate miles, or multiply miles by 1.6 for km.
About Mile (mi)
Definition
The mile is a unit of length equal to 5,280 feet, 1,760 yards, or exactly 1,609.344 meters.
Mathematical Relationship
1 mi = 5,280 ft = 1,760 yd = 1,609.344 m = 1.609344 km.
Conversion Formula
To convert miles to km: multiply by 1.60934. To convert km to miles: multiply by 0.621371.
Practical Applications
Highway distances, speed limits (mph), running races (1-mile run), and property boundary descriptions.
Interesting Facts
A 4-minute mile was once thought impossible. Roger Bannister broke the barrier in 1954 with a time of 3:59.4.
Common Mistakes
Confusing statute miles with nautical miles (1 nmi = 1.852 km vs 1 mi = 1.609 km). They're different units.
Educational Tips
Quick km↔mi: Fibonacci numbers approximate the ratio! 5 mi ≈ 8 km, 8 mi ≈ 13 km, matching the 1.6 ratio.