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Miles to Kilometers
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// about this tool

Miles to Kilometers Online

Updated 2026-07-09

Convert miles to kilometers online for free. Enter a distance in miles and SnapTools shows the exact value in kilometres instantly, in your browser — nothing is uploaded.

One mile is exactly 1.609344 kilometres, so you multiply miles by about 1.6094. For quick reference: 1 mi ≈ 1.61 km, 5 mi ≈ 8.05 km, 10 mi ≈ 16.09 km, 26.2 mi (a marathon) ≈ 42.2 km, and 100 mi ≈ 160.93 km. Enter any value above for the precise figure, or use the full Length Converter for metres, feet, yards, and more.

// how to use

  1. 1 Type a distance in miles into the input.
  2. 2 SnapTools shows the value in kilometres instantly as you type.
  3. 3 Copy the result, or open the Length Converter for other units.

// examples

Common distance
Input
5
Output
8.04672
Round number
Input
100
Output
160.9344

// common uses

Converting mile-based road distances to kilometres Reading US or UK signage in metric Comparing running distances across systems Planning a route given in miles on a metric map

// faq

No. The conversion runs entirely in your browser, so nothing you enter leaves your machine.
One mile is exactly 1.609344 kilometres, by the international definition of the mile as 1609.344 metres. So you multiply miles by 1.609344 to get km.
A close estimate is to multiply by 1.6 (or add 60 percent). 10 miles is about 16 km. This tool gives the exact value.
Yes. It uses the international statute mile of 1609.344 metres, the standard for road distances, not the nautical mile.
It uses the exact international definition, so the answer is precise to many decimal places rather than a rounded estimate.

// related

Kilometers to Miles Feet to Meters Inches to Centimeters Length Converter Number Base Converter

Use this via API

Get a free API key → 
curl -X POST https://snaptools.dev/api/v1/tools/miles-to-km \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"value":"5"}'
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