A millimeter (mm) is a unit of length in the metric system. It is very small and is equal to:
- One thousandth of a meter (1 mm = 0.001 meters)
- About the thickness of a credit card or a dime
- Approximately 0.039 inches
To visualize:
- The thickness of a standard paper is roughly 0.1 mm, so a millimeter is about 10 times that thickness.
- The width of a typical grain of rice is about 5 to 7 millimeters.
If you need a more specific comparison or examples, feel free to ask!