Names of small numbers

This is a list of the names of small decimal numbers in English.

Table The following table lists the names of small numbers used in the long and short scales, along with the power of 10, engineering notation, and International System of Units (SI) symbols and prefixes.American Heritage Dictionary, 4th edition, . Oxford English Dictionary, New Edition, Oxford, UK: Oxford University Press. (subscription required) Bureau International des Poids et Mesures (BIPM)

Poweroften Engineeringnotation Short scale(U.S. andmodern British) Long scale(continental Europe, archaic British, and India)SIprefix SIsymbol100 1 One 10−1 100×10−3 One Tenth deci- d10−2 10×10−3 One One-Hundredth centi- c10−3 1×10−3 One One-Thousandth milli- m10−6 1×10−6 One One-Millionth micro-μ10−9 1×10−9 One One-BillionthOne One-Milliardthnano- n10−12 1×10−12 One One-TrillionthOne One-Billionth pico- p10−15 1×10−15 One One-QuadrillionthOne One-Billiardthfemto- f10−18 1×10−18 One One-QuintillionthOne One-Trillionth atto- a10−21 1×10−21 One One-SextillionthOne One-Trilliardthzepto- z10−24 1×10−24 One One-SeptillionthOne One-Quadrillionth yocto- y10−27 1×10−27 One One-OctillionthOne One-Quardilliardth ronto- r10−30 1×10−30 One One-NonillionthOne One-Quintillionth quecto- q10−33 1×10−33 One One-DecillionthOne One-Quintilliardth 10−36 1×10−36 One One-UndecillionthOne One-Sextillionth 01×10−∞Zero–1–1 Negative One−∞undefinedNegative Infinity

See also

Names of large numbers Number names Numeral prefix Metric prefix

References