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km to Miles Converter

Convert kilometers to miles for US drivers reading international road signs and race distances.

km
mi
Precision: For driving, round to 1 decimal place. For races, keep 3 decimals.US Standard

How It Works

Formula: km to mi = value × 0.621371192

Example: 100 km = 62.137119 mi

Note: 1 kilometer equals 0.6214 miles, derived from the US statute mile (1 mi = 1.609344 km).

Common Uses

Travel PlanningRunning RacesDrivingNavigation

Rounding Rule

Rounded to 4 decimal places

Error Margin

±0.0001 mi

Precision Guidance

For driving, round to 1 decimal place. For races, keep 3 decimals.

Common Mistakes

A 5K is 3.1 miles, not 5 miles. Always convert kilometers to miles before comparing to US distances.

Frequently Asked Questions

What is 100 km in miles?

100 km equals 62.137 miles using the conversion 1 km = 0.621371 mi.

How do I convert km to miles?

Multiply the kilometer value by 0.6214, or divide by 1.6093.

What is a 5K race in miles?

A 5K race is 5 kilometers, which equals about 3.107 miles.

Is this the same as the US statute mile?

Yes, this converts to the US statute mile used on American road signs.

Deep Dive Guide

KM to Miles: Complete Conversion Guide for US Travelers

Convert km to miles with the exact 0.621371 factor. Our 2026 guide covers international road signs, races, and maps for US travelers.

Read Full Guide →

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Last Updated 2026 | This converter was reviewed for accuracy