Use our online actual size ruler to accurately measure objects in both centimeters and inches. Print-ready and calibrated for your screen.

May 31, 2025 · To measure in mm, hold a metric ruler against an object, count the number of whole cm of its length, and multiply by 10. Then, add the remaining mm for the full length.

The millimetre (SI symbol: mm; international spelling) or millimeter (American spelling) is a unit of length in the International System of Units (SI), equal to one thousandth of a metre, the SI base unit of length.

Instant free online tool for millimeter to inch conversion or vice versa. The millimeter [mm] to inch [in] conversion table and conversion steps are also listed. Also, explore tools to convert millimeter or inch …

A millimeter can be defined as a metric unit used to measure the length of small or tiny objects such as measuring lines, the length of a pencil tip, etc. The word is usually expressed as 'mm' and is …

May 26, 2019 · What are millimetres and how do we measure millimetres using a ruler? Learn how to measure and read mm with our video lesson and worksheets.

To convert mm to inches you need to divide the value in mm by 25.4 as there are this many millimeters in an inch. For example, suppose you have a length of 100 millimeters and you want to convert it to …

“Millimeter” is a unit of length that equals one-thousandth of a meter. It is a small unit of measurement compared to the centimeter, meter, inches, and feet we are familiar with.

metric system, international decimal system of weights and measures, based on the metre for length and the kilogram for mass, that was adopted in France in 1795 and is now used officially in almost all …

Its standard width is 3.37 inches (3 3⁄8 inches), or 85.6 mm (8 centimeters, 56 millimeters) for the metric measurement. For your convenience, the corresponding sign is plotted under the scale of the ruler.