How many millimeters are in 1 meter?

One meter is equivalent to 1,000 millimeters because the metric system is based on powers of ten. In this system, the prefix "milli-" indicates a factor of one-thousandth. Thus, there are 1,000 millimeters in one meter, as a millimeter is 1/1,000th of a meter. This relationship is fundamental in conversions between metric units, making it essential for anyone working with measurements in healthcare or other scientific fields to understand.