To convert meters to centimeters (m to cm), multiply by 100. 1 meter equals 100 cm, about 1.4 times as much as a tennis racket.
| meters | centimeters |
|---|---|
| 1 meter | 100 cm |
| 2 meters | 200 cm |
| 5 meters | 500 cm |
| 10 meters | 1,000 cm |
| 25 meters | 2,500 cm |
| 50 meters | 5,000 cm |
| 100 meters | 10,000 cm |
| 250 meters | 25,000 cm |
| 500 meters | 50,000 cm |
| 1000 meters | 100,000 cm |
Definition: The base unit of length in the metric system - every other metric length (km, cm, mm) is just meters multiplied or divided by a power of ten.
History: Born out of the French Revolution's push to replace a chaotic patchwork of local, often royally-defined units with something rational and universal. In 1793, French scientists defined the meter as one ten-millionth of the distance from the North Pole to the Equator, measured along the meridian running through Paris - they actually sent surveyors out to physically measure the distance between Dunkirk and Barcelona to calculate it, a project that took years longer than planned. Today the meter is defined by something far more precise and impossible to argue with: the distance light travels in a tiny, fixed fraction of a second.
Current use: The foundation of virtually every length measurement outside the US - room dimensions, building heights, and race distances (measured in km) all build on it.
Definition: 1/100 of a meter - the "centi" prefix doing the same job it does in "century" or "cent."
History: Introduced alongside the meter itself during the French Revolution's metric overhaul, the centimeter was designed from the start to be a convenient, everyday-sized subdivision - a meter is often too big and a millimeter too small for describing things like a person's height or a book's thickness.
Current use: Height, everyday object sizes, and fabric measurements across most of the world; also the standard unit doctors use internationally for body measurements.
The factor is 100.000, which is derived rather than defined, so any decimal you see has been rounded somewhere.
For mental arithmetic the factor is close enough to 100 to use directly: multiply meters by 100 and the answer is right to within a rounding error.
Going the other way, one centimeter is 0.01 m. Because the numbers get large quickly, a whole-number answer is almost always enough here: carrying decimals implies a precision your original measurement probably does not have.
To anchor the scale: 1 meter is about 100 cm.