Converter millimeter

There are two types of scales commonly used on rulers; Fractional and Decimal. Decimal Rulers have graduations or marks which are based on the decimal system such as 0. Most Fractional Rulers are based on the English measuring system where scales are graduated in units of one inch and fractions of an inch.

This is an online length converter, convert millimeters mm to inches, centimeters cm to inches, inches to cm, inches to mm, include fraction and decimal inches, with a ruler to show the corresponding of units, understand your question with the best visualization. If you would like convert between meters, feet and inches m, ft and in , eg. Convert feet to centimeters or centimeters to feet. An inch was defined to be equivalent to exactly There are 12 inches in a foot and 36 inches in a yard.

There have been a number of different standards for the inch in the past, with the current definition being based on the international yard. One of the earliest definitions of the inch was based on barleycorns, where an inch was equal to the length of three grains of dry, round barley placed end-to-end. The relationship between the meter and the millimeter is constant however. Prior to this definition, the meter was based on the length of a prototype meter bar. In , the meter has been re-defined based on the changes made to the definition of a second.

Definition: An inch symbol: in is a unit of length in the imperial and US customary systems of measurement. An inch was defined to be equivalent to exactly There are 12 inches in a foot and 36 inches in a yard.