A millimetre (mm) is a commonly used unit around the world to calculate small units. It is defined as 1/1000 of a metre. Mm is a base unit of length in the metric system. It is commonly denoted by the symbol ‘mm’. For example, if you want to write 50 millimetres, you write it as 50 mm. It is used to measure very small units like the thickness of the sheets, the width of the small objects and the size of the components in machinery and electronics. It is used in the fields of engineering, architecture, manufacturing, medicine, and science to calculate lengths, diameters, and heights. It is measured using rulers, micrometres, and laser distance metres. The metre has been defined as ‘the length of the path travelled by light in vacuum during a time interval of 1/299792458 of a second’. When measured using a metric metre, the smallest measurements are often millimetres. Rulers used by engineers generally have an increment of 0.5 mm and digital callipers are designed to read increments which are as small as 0.01 mm. Microwaves which have a frequency of 300 GHz have a wavelength of about 1 mm. The human eye can resolve the smallest dimension between 0.02 to 0.04 mm.
Converting mm into any other measuring unit is easy and requires simple mathematical calculations. As feet are a globally accepted unit, hence it can be easily converted into metres, yards, centimetres, micrometres, fathoms, and feet. The calculation process can be done easily using the housing.com calculator.
Unit of length | Conversion units |
---|---|
1 mm | 0.1 centimetres |
1 mm | 0.001 metres |
1 mm | 0.01 decimetres |
1 mm | 1000 micrometres |
1 mm | 1,000,000 nanometres |
1 mm | 39.3701 mils |
1 mm | 0.00547 fathoms |
1 mm | 0.00328084 feet |
1 mm | 0.00109 yard |
1 mm | 0.001312 smoots |