Kilometers to Miles 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 | 1,000 | |
| Feet ft | 3,280.84 | |
| Centimeters cm | 100,000 | |
| Millimeters mm | 1,000,000 | |
| Inches in | 39,370.08 | |
| Yards yd | 1,093.61 | |
| Kilometers km | 1 | SourceSource |
| Miles mi | 0.62 | TargetSelected |
| Nautical Miles nmi | 0.54 |
Use this kilometer-to-mile reference when comparing road distances, route lengths and race distances reported in different measurement systems.
Curated referenceFormula
miles = kilometers ÷ 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 | Kilometers | Miles | 0.621371192237 |
| 5 | Kilometers | Miles | 3.10685596119 |
| 10 | Kilometers | Miles | 6.21371192237 |
| 42.195 | Kilometers | Miles | 26.2187574565 |
| 50 | Kilometers | Miles | 31.0685596119 |
| 100 | Kilometers | Miles | 62.1371192237 |
Related length conversions
Curated references with worked examples, formulas and the full interactive converter.
Frequently asked questions
How do I convert kilometers to miles?
Use miles = kilometers ÷ 1.609344. Enter a value in the calculator to keep full numeric precision until the result is formatted.
What is 1 km in mi?
1 km equals 0.621371192237 mi.
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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