Metric (SI) System of Units Prefixes

Yotta (Y) = 10²⁴
Zetta (Z) = 10²¹
Exa (E) = 10¹⁸
Peta (P) = 10¹⁵
Tera (T) = 10¹²
Giga (G) = 10⁹
Mega (M) = 10⁶
Kilo (k) = 10³
Hecto (h) = 10²
Deca (D) = 10
Root
Deci (d) = 10^-1
Centi (c) = 10^-2
Mili (m) = 10^-3
Micro (µ) = 10^-6
Nano (n) = 10^-9
Pico (p) = 10^-12
Femto (f) = 10^-15
Atto (a) = 10^-18
Zepto (z) = 10^-21
Yocto (y) = 10^-24