Decimal System Prefixes

Prefix names used for multiples and submultiples units.

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Decimal multiples of units:

Prefix	Measure	Decimal equivalent	Exponential expression
y - yocto		0.000 000 000 000 000 000 000 001	E^-24
z - zepto		0.000 000 000 000 000 000 001	E^-21
a - atto	one-quintillionth	0.000 000 000 000 000 001	E^-18
f - femto	one-quadrillionth	0.000 000 000 000 001	E^-15
p - pico	one-trillionth	0.000 000 000 001	E^-12
n - nano	one-billionth	0.000 000 001	E^-9
μ - micro	one-millionth	0.000 001	E^-6
m - milli	one-thousandth	0.001	E^-3
c - centi	one-hundredth	0.01	E^-2
d - deci	one-tenth	0.1	E^-1
Uni	one	1	E⁰
d - deka	ten	10	E¹
h - hecto	one hundred	100	E²
k - kilo	one thousand	1 000	E³
M - mega	one million	1 000 000	E⁶
G - giga	one billion	1 000 000 000	E⁹
T - tera	one trillion	1 000 000 000 000	E¹²
P - peta		1 000 000 000 000 000	E¹⁵
E - exa		1 000 000 000 000 000 000	E¹⁸
Z - zetta		1 000 000 000 000 000 000 000	E²¹
Y - yotta		1 000 000 000 000 000 000 000 000	E²⁴

Prefixes used in the SI system.

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Binary, Octal and Hexadecimal Numbers - Decimal, binary, octal and hexadecimal numbers.
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Complex Numbers - Complex numbers are used in alternating current theory and mechanical vector analysis.
Exponents - Powers and Roots - The laws of fractional and integer exponents.
Factorials - The product of all positive integers.
Laws of Indices - Simplifying calculations by involving indices.
Numbers - Square, Cube, Square Root and Cubic Root Calculator - Calculate square, cube, square root and cubic root. Values tabulated for numbers ranging 1 to 100.
Numbers - Standard Form, Scientific and Engineering Notation - The difference between standard, scientific and engineering number notation.
SI System - An introduction to the SI metric system.
Symbols Used to Denote a Chemical Reactions and Process or Condition - Explanation of symbols used as subscripts or superscripts to tell more about the type of chemical reaction, process or condition.