Length Converter

About the Length

This length converter converts instantly between the units you actually use: metres, kilometres, miles, feet, inches, centimetres, millimetres, and yards. Whether you are converting a race distance, measuring a room, reading a foreign road sign, or working in construction, this tool gives you precise conversions without mental arithmetic. The common conversions: 1 mile = 1.609344 kilometres, so running a 10-mile route is just over 16 km. 1 metre = 3.28084 feet, useful when you are measured in metres but a space is described in feet. 1 inch = 2.54 centimetres exactly, which is the key for screen sizes and personal measurements. 1 yard = 0.9144 metres, common in American football and fabric. Knowing these reference points lets you sanity-check any conversion and spot errors. Which system you use depends on where you are and what you measure. The metric system (metres, kilometres, centimetres) is the standard across most of the world and in science and engineering. The imperial/US customary system (feet, miles, inches, yards) dominates in the United States and is common in construction and sports across some countries. Many people use both day to day: you might weight in kilograms but measure a person's height in feet and inches, or drive in miles in the UK and walk in metres elsewhere. To use the converter, choose your unit pair, type a value, and the result appears instantly in real time. You can flip between directions to check the reverse conversion. Whether you are converting 26.2 miles to 42.2 km for a marathon, feet to metres for a land purchase, or cm to inches for a TV size, the tool handles exact decimals so you can rely on the answer.