What are the metric prefixes for meters?

Metric meter prefixes from large to small: kilometer (km, 1,000 m), hectometer (hm, 100 m), decameter (dam, 10 m), meter (m, 1 m), decimeter (dm, 0.1 m), centimeter (cm, 0.01 m), millimeter (mm, 0.001 m), micrometer (um, 0.000001 m), nanometer (nm, 10^-9 m), picometer (pm, 10^-12 m).

How do I convert between metric length units?

All metric conversions are powers of 10. Multiply when going to smaller units, divide when going to larger. km to m: multiply by 1,000. m to cm: multiply by 100. cm to mm: multiply by 10. mm to um: multiply by 1,000.

What is the most commonly used unit of length?

The meter is the SI base unit of length. For everyday use: kilometers for road distances, meters for room dimensions, centimeters for body measurements and small objects, millimeters for precision engineering. Nanometers for light and semiconductor features.

How long is 1 meter compared to common objects?

A meter is approximately: the height of a kitchen counter (about 90-95 cm), the width of a doorway (about 80-90 cm), or about 3 inches shorter than a standard US door height of 80 inches (203 cm). One meter = 3.281 feet = 39.37 inches = 100 cm.

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