Length Converter
Convert between metric and imperial length units in real time.
Convert between metric and imperial length units in real time.
Type a value into any field and all other length units will update instantly. The converter supports millimeters, centimeters, meters, kilometers, inches, feet, yards, and miles. This covers both metric and imperial systems, making it useful for international projects, travel, construction, and everyday measurements.
The metric system (mm, cm, m, km) is used in most countries worldwide and in all scientific contexts. The imperial system (inches, feet, yards, miles) is used primarily in the United States, United Kingdom, and a few other countries. Being able to quickly convert between these systems is essential for anyone working across borders or reading specifications from different regions.
One inch equals exactly 2.54 centimeters. One foot equals 12 inches or 30.48 centimeters. One yard equals 3 feet or 0.9144 meters. One mile equals 1.609344 kilometers. One meter equals 100 centimeters or approximately 3.281 feet. These relationships form the basis for all length conversions between metric and imperial units.
Length conversions are needed in construction, tailoring, athletics, shipping, manufacturing, and map reading. Engineers convert between millimeters and inches for precision parts. Runners track distances in both kilometers and miles. Interior designers switch between feet and meters. This converter handles all of these scenarios instantly with no rounding errors in the core conversion factors.