Tool
Length Converter
Convert between mm, cm, m, km, inches, feet, yards and miles. Live reference table for all units.
About the Length Converter
Length measurement varies between countries and contexts. The metric system (mm, cm, m, km) is used by most of the world, while the imperial system (inches, feet, yards, miles) is still common in the US and informally in the UK. This converter handles all common length units with live results and a full reference table showing every conversion simultaneously.
Common uses: converting height between cm and feet/inches, converting distances between km and miles, engineering measurements, fabric and clothing sizes, and screen dimensions.
The most searched conversions are centimetres to inches (for screen sizes and clothing), kilometres to miles (for distances and road signs abroad), metres to feet (for height and property dimensions), and millimetres to inches (for engineering and woodworking). A quick reference: 1 inch = 2.54 cm, 1 foot = 30.48 cm, 1 mile = 1.609 km, 1 metre = 3.281 feet.
Height conversion comes up often — 180 cm is 5 ft 11 in, 170 cm is 5 ft 7 in, 160 cm is 5 ft 3 in. Screen sizes are always quoted diagonally in inches, so a 27-inch monitor is 68.6 cm corner to corner. The reference table shows every unit simultaneously for the value you enter.
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