Quantity | Dimension | SI unit |
Length | l | metre (m) |
Mass | m | kilogram (kg) |
Time | t | second (s) (or h, day, yr, Ma) |
Temperature | T | Kelvin (K) |
Area | l2 | m2 |
Volume | l3 | m3 |
Acceleration | l/t | m/s |
Force | m l t-2 | kg m/s2 or Newtons (N) |
Pressure | m l-1 t-2 | kg m-1 s-2 or Pascals (Pa) |
Work, energy | m l2 t-2 | kg m2 s-2 or Joules (J) |
Power | m l-1 t-2 | kg m2 s-3 or Watts (W) |
Abbreviation | Prefix | Factor | Factor in Scientific Notation |
T | tera- | one trillion | 1012 |
G | giga- | one billion | 109 |
M | mega- | one million | 106 |
k | kilo- | one thousand | 103 |
h * | hecto- | one hundred | 102 |
da * | deka- | ten | 101 |
d * | deci- | one tenth | 10-1 |
c * | centi- | one hundredth | 10-2 |
m | milli- | one thousandth | 10-3 |
µ | micro- | one millionth | 10-6 |
n | nano- | one billionth | 10-9 |
p | pico- | one trillionth | 10-12 |