Miles to Kilometers Converter
Length conversion workspace
Enter a decimal, fraction or quick calculation — for example 12.5, 3/8 or (12*4)+6.5.
Batch conversionconvert up to 100 values at once
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Compare all length units
One input, every supported equivalent. Select any row as the main target.
| Unit | Equivalent | Target action |
|---|---|---|
| Meters m | 1,609.34 | |
| Feet ft | 5,280 | |
| Centimeters cm | 160,934.4 | |
| Millimeters mm | 1,609,344 | |
| Inches in | 63,360 | |
| Yards yd | 1,760 | |
| Kilometers km | 1.61 | TargetSelected |
| Miles mi | 1 | SourceSource |
| Nautical Miles nmi | 0.87 |
Use this mile-to-kilometer converter for road trips, race distances, route planning and specifications that cross between US or UK and metric units.
Curated referenceFormula
kilometers = miles × 1.609344
Calculations use the central unit catalog and preserve precision until the result is formatted.
Reference conversions
Fixed reference values use en-US formatting and up to 12 significant digits.
| Input | From | To | Result |
|---|---|---|---|
| 1 | Miles | Kilometers | 1.609344 |
| 5 | Miles | Kilometers | 8.04672 |
| 10 | Miles | Kilometers | 16.09344 |
| 26.2 | Miles | Kilometers | 42.1648128 |
| 50 | Miles | Kilometers | 80.4672 |
| 100 | Miles | Kilometers | 160.9344 |
Related length conversions
Curated references with worked examples, formulas and the full interactive converter.
Frequently asked questions
How do I convert miles to kilometers?
Use kilometers = miles × 1.609344. Enter a value in the calculator to keep full numeric precision until the result is formatted.
What is 1 mi in km?
1 mi equals 1.609344 km.
Are the displayed results rounded?
The conversion uses the sourced catalog definitions and retains full JavaScript number precision until display formatting is applied.
Accuracy & transparency
Sources & methodology
Calculations keep full numeric precision until display formatting. These references describe the definitions, variants or factors used; links do not imply affiliation.
SI definitions and published coefficients for selected non-SI units.
Reference factors and named variants for commonly used units, including US liquid cooking measures and British stone.
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