What is equivalent to 1 meter in millimeters?

One meter is equivalent to 1,000 millimeters because the metric system is based on powers of ten, which makes converting between units straightforward. Specifically, the prefix "milli-" denotes a factor of one-thousandth, meaning there are 1,000 millimeters in a single meter. This can be visualized by recalling that 1 meter equals 1,000 millimeters because each millimeter is one-thousandth of a meter. Thus, multiplying the meter value by 1,000 accurately converts it to millimeters. In contrast, other values do not accurately reflect this conversion; for instance, 100 millimeters would only represent 0.1 meters, while 10 millimeters and 1,000,000 millimeters vastly exceed the measurement of one meter.