KM to Miles converter
1 km = 0.621371192237 mi
Divide kilometres by 1.609 344. Quick mental version: multiply by 5 and divide by 8, which lands within 0.6% of the exact answer.
5 km = 3.106855961 mi
Formula: mi = km ÷ 1.609344
5 km in every length unit
- millimetre
- centimetre
- metre
- inch
- foot
- yard
- mile
- nautical mile
How to convert kilometres to miles
mi = km ÷ 1.609344
Example: 5 km × 0.621371192237 = 3.106855961 mi.
kilometre: 1 km = 1000 m (BIPM SI Brochure)
mile: 1 mi = 5280 ft = 1609.344 m (NIST SP 811, App. B (1959 yard & pound agreement))
Going the other way? Use the miles to km converter.
Where the number 0.62137119 comes from
Nothing is measured here. Every step below is a definition written into law or into the SI.
1 km
KM to Miles table
| kilometres (km) | miles (mi) |
|---|---|
| 1 | 0.6213712 |
| 2 | 1.242742 |
| 3 | 1.864114 |
| 5 | 3.106856 |
| 8 | 4.97097 |
| 10 | 6.213712 |
| 15 | 9.320568 |
| 16.09 | 9.997862 |
| 20 | 12.42742 |
| 21.1 | 13.11093 |
| 25 | 15.53428 |
| 30 | 18.64114 |
| 40 | 24.85485 |
| 42.195 | 26.21876 |
| 50 | 31.06856 |
| 80 | 49.7097 |
| 100 | 62.13712 |
| 160 | 99.41939 |
| 200 | 124.2742 |
| 500 | 310.6856 |
| 1,000 | 621.3712 |
Questions
How many miles are in 1 kilometre?
1 km = 0.621371192237 mi.
What is the formula to convert kilometres to miles?
mi = km ÷ 1.609344. 1 km = 1000 m; 1 mi = 5280 ft = 1609.344 m.
Is this conversion exact?
Yes. Both units are defined exactly (BIPM SI Brochure; NIST SP 811, App. B (1959 yard & pound agreement)), so the factor is exact and results are only rounded for display.
What is 5 km in mi?
5 km = 3.106855961 mi.