For all your unit conversions. Convert from x to y, from this to that.
What do you want to convert from?
And what do you want to convert to?
The inch is a unit of length in the British imperial and the United States customary systems of measurement. Since the adoption of the international yard during the 1950s and 1960s it has been based on the metric system and defined as exactly 25.4 mm. The standard size pencil that you may see in schools and offices is 7 inches long.