Length Units Conversion

Length conversion calculator for metric, imperial and US customary units. Includes from everyday use to scientific length units.

In metric system, base unit of length is "metre" (meter is American spelling). Other common metric units of length are kilometer, centimeter and millimeter. In imperial and US customary system, common length units are foot, inch, yard and mile.

Enter a length unit value into the textbox below and select length units to convert between: