metric prefixes
Magnitude naming system
Metric prefixes are the syllables attached to base units to indicate multiples or fractions: kilo- for thousand, milli- for one-thousandth, mega- for million, micro- for one-millionth, and so on.
They allow compact expression of very large or small quantities: a kilogram, three millimeters, two terabytes.
The prefixes scale by powers of ten, making conversion straightforward.
- megaMillion-fold prefix
- kiloThousand-unit prefix
- milliOne-thousandth prefix
- nanoMetric prefix for billionth
- millionthsOne divided million times
parts per million · pico · giga · peta · SI units · centi · prefixes · hecto · thousand · ten · SI · units of measure · conversion factors · decimal point · unit conversion · grams · liters · order of magnitude
micro, metric prefix, centimeter, metric, millimeter, kilometre, decameter, decimeter, centimetric