Length Conversion — Complete Guide
Length is one of the most fundamental physical measurements, yet the world uses two competing systems: the metric system (millimeters, centimeters, meters, kilometers) used by the vast majority of countries, and the imperial/US customary system (inches, feet, yards, miles) still prevalent in the United States, the UK (for road distances), and a handful of other countries. This creates an ongoing need for accurate length conversion in engineering, construction, travel, and everyday life.
Our Length Converter supports 9 common length units with instant conversions. Enter a value in any unit and immediately see the equivalent in all other supported units. Whether you're converting architectural blueprints from feet to meters, calculating running distances between kilometers and miles, or sizing components in millimeters versus inches, this tool provides precise results with up to 10 significant figures.
Supported Units
- Metric: Millimeters, Centimeters, Meters, Kilometers
- Imperial/US: Inches, Feet, Yards, Miles
- Nautical: Nautical Miles
Quick Reference
- 1 meter = 3.28084 feet = 39.3701 inches
- 1 kilometer = 0.621371 miles
- 1 mile = 1.60934 kilometers
- 1 nautical mile = 1.852 kilometers
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