Prefixes
All units can be combined with the following prefixes (capitalized):
| Prefix |
Prefix symbol |
Value |
Prefix |
Prefix symbol |
Value |
| DECI |
\(\text{d}\) |
\(10^{-1}\) |
DECA |
\(\text{da}\) |
\(10^{1}\) |
| CENTI |
\(\text{c}\) |
\(10^{-2}\) |
HECTO |
\(\text{h}\) |
\(10^{2}\) |
| MILLI |
\(\text{m}\) |
\(10^{-3}\) |
KILO |
\(\text{k}\) |
\(10^{3}\) |
| MICRO |
\(\text{µ}\) |
\(10^{-6}\) |
MEGA |
\(\text{M}\) |
\(10^{6}\) |
| NANO |
\(\text{n}\) |
\(10^{-9}\) |
GIGA |
\(\text{G}\) |
\(10^{9}\) |
| PICO |
\(\text{p}\) |
\(10^{-12}\) |
TERA |
\(\text{T}\) |
\(10^{12}\) |
| FEMTO |
\(\text{f}\) |
\(10^{-15}\) |
PETA |
\(\text{P}\) |
\(10^{15}\) |
| ATTO |
\(\text{a}\) |
\(10^{-18}\) |
EXA |
\(\text{E}\) |
\(10^{18}\) |
| ZEPTO |
\(\text{z}\) |
\(10^{-21}\) |
ZETTA |
\(\text{Z}\) |
\(10^{21}\) |
| YOCTO |
\(\text{y}\) |
\(10^{-24}\) |
YOTTA |
\(\text{Y}\) |
\(10^{24}\) |
| RONTO |
\(\text{r}\) |
\(10^{-27}\) |
RONNA |
\(\text{R}\) |
\(10^{27}\) |
| QUECTO |
\(\text{q}\) |
\(10^{-30}\) |
QUETTA |
\(\text{Q}\) |
\(10^{30}\) |
Example
| from si_units import MICRO, SECOND, MEGA, PASCAL
dt = 15 * MICRO * SECOND
print(dt)
MPA = MEGA * PASCAL
pressure = 20 * MPA
print(pressure)
|