How to Convert Millimeters to Inches

Meters are a measurement of length, and metric rulers and tape measures are graduated in Meters. These are broken down into 100 centimeters, which in turn are broken into 10 millimeters. Centimeters are 1/100th of a meter. Likewise millimeters are 1/1000th of a meter. Therefore 25.4 or 25&4/10th millimeters equals one inch. A good rule of thumb to use is that an inch is approximately 2 centimeters, but if you need more accuracy,

Instructions

1

Measure a length with a tape measure or ruler. If you use a metric ruler then convert this measure into the Imperial measure.

2

Convert the millimeter measurement to inches by dividing the millimeter figure by 25.4. For instance if the length measured is 2,540 mm you will divide this by 25.4. eg
2540mm = 100"
25.4

3

To convert from an Imperial (Inches) measure do the converse. Multiply the inches measurement by 25.4. Using the above example,
100" x 25.4 = 2540mm