Miles to Kilometers Converter
Convert miles to kilometers instantly with this free miles to kilometers converter. Enter any value to get an accurate length conversion, plus the formula, the conversion factor and a full reference table.
What is 1 mile in kilometers?
1 mile is equal to exactly 1.609344 kilometers.
1 × 1.609344 = 1.609344 kilometers
1 mile = 1.609344 kilometers
Miles to Kilometers formula
km = mi × 1.609344
The miles to kilometers conversion factor is 1.609344, which is exact by definition. 1 mile = 1.609344 kilometers, and 1 kilometer = 0.621371192237 miles.
Worked examples
- 2 miles = 3.218688 kilometers — 2 × 1.609344 = 3.218688 kilometers
- 6 miles = 9.656064 kilometers — 6 × 1.609344 = 9.656064 kilometers
- 10 miles = 16.09344 kilometers — 10 × 1.609344 = 16.09344 kilometers
Miles to Kilometers conversion table
Every value below is calculated with the exact conversion factor and rounded for display.
| Miles (mi) | Kilometers (km) |
|---|---|
| 1 mi | 1.609344 km |
| 2 mi | 3.218688 km |
| 3 mi | 4.828032 km |
| 4 mi | 6.437376 km |
| 5 mi | 8.04672 km |
| 6 mi | 9.656064 km |
| 7 mi | 11.265408 km |
| 8 mi | 12.874752 km |
| 9 mi | 14.484096 km |
| 10 mi | 16.09344 km |
| 12 mi | 19.312128 km |
| 15 mi | 24.14016 km |
| 20 mi | 32.18688 km |
| 25 mi | 40.2336 km |
| 30 mi | 48.28032 km |
| 50 mi | 80.4672 km |
| 75 mi | 120.7008 km |
| 100 mi | 160.9344 km |
| 500 mi | 804.672 km |
| 1,000 mi | 1,609.344 km |
When you need to convert miles to kilometers
- Buying furniture, TVs or appliances listed in one system and fitting them into a room measured in the other.
- Following building plans, sewing patterns or DIY instructions written abroad.
- Reading height, screen size or luggage limits when travelling between the US and the rest of the world.
Getting a feel for the scale
A converted number is easier to trust when you can picture it. These reference points let you sanity-check the result at a glance.
Mile (mi)
- A mile is about a 20-minute walk
- A US city block is roughly 1/20 of a mile
Kilometer (km)
- A brisk 12-minute walk covers about 1 km
- A running track lap is 400 m
Mental shortcut
Add 60%. 10 miles → 16 km (exact 16.09).
Common mistakes to avoid
- Dividing when you should multiply. Because 1 mile = 1.60934 kilometers, the answer should be larger than the number you started with.
- Rounding too early. Convert first at full precision, then round the final answer to the precision the task actually needs.
How precise does the answer need to be?
For everyday measurements round to the nearest whole unit or to one decimal place. Machining, sewing and construction usually need at least two decimals — and it is worth measuring in the target unit directly when tolerance matters.
How these units are defined
- Mile (mi): The statute mile: 5,280 feet or exactly 1,609.344 meters. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
- Kilometer (km): One thousand meters; the standard road-distance unit in metric countries. This unit's relationship to the SI base unit is exact by definition, so no rounding enters the conversion factor.
Related conversions
Frequently asked questions
- What is 1 mile in kilometers?
- 1 mile is equal to 1.609344 kilometers.
- How many miles are in one kilometer?
- There are 0.621371192 miles in 1 kilometer.
- How do you convert miles to kilometers?
- Multiply the number of miles by 1.609344 — or use the formula km = mi × 1.609344.
- What is 6 miles in kilometers?
- 6 miles is 9.656064 kilometers. 6 × 1.609344 = 9.656064 kilometers.
- Is the miles to kilometers conversion exact?
- Yes. The relationship is fixed by definition, so 1.609344 is an exact conversion factor — only the displayed result is rounded.