Length Converter

Convert lengths between meters, feet, inches, kilometers, miles and more.

Length Input

Value Unit Decimal places

Results

Enter a length or distance to compare metric, U.S. customary, road, marine, and machining units.

Feet and inches: -

m km cm mm um nm in ft yd mi nmi mil

Reference

U.S. customary 1 ft = 12 in; 1 yd = 3 ft; 1 mi = 5,280 ft

Metric 1 km = 1,000 m; 1 m = 100 cm = 1,000 mm

Marine distance 1 nautical mile = 1,852 m, used for aviation and navigation

Tool Introduction

Use this length converter for measurements, road distances, product dimensions, shipping specs, construction notes, schoolwork, and travel planning. It converts between metric units, inches, feet, yards, miles, nautical miles, and mils.

For U.S. audiences, feet and inches are often easier to read than a decimal foot value, so the converter also shows a combined feet-and-inches result whenever a valid length is entered.