| Base quantity | Name | Symbol |
| length | meter | m |
| mass | kilogram | kg |
| time | second | s |
| electric current | ampere | A |
| thermodynamic temperature | kelvin | K |
| amount of substance | mole | mol |
| luminous intensity | candela | cd |
| Length | Area |
| 10 millimeters = 1 centimeter | 100 sq. mm = 1 sq. cm |
| 10 centimeters = 1 decimeter | 10 000 sq. cm = 1 sq. meter |
| 10 decimeters = 1 meter | 100 sq. meters = 1 are |
| 10 meters = 1 decameter | 100 ares = 1 hectare |
| 10 decameters = 1 hectometer | 10 000 sq. meters = 1 hectare |
| 10 hectometers = 1 kilometer | 100 hectares = 1 sq. kilometer |
| 1000 meters = 1 kilometer | 1 000 000 sq. meters = 1 sq. kilometer |
Volume |
Capacity |
| 1000 cu. mm = 1 cu. cm | 10 milliliters = 1 centiliter |
| 1000 cu. cm = 1 cu. decimeter | 10 centiliter = 1 deciliter |
| 1000 cu. dm = 1 cu. meter | 10 deciliters = 1 liter |
| 1 million cu. cm = 1 cu. meter | 1000 liters = 1 cu. meter |
Mass |
|
1000 grams = 1 kilogram |
|
|
1000 kilograms = 1 ton |
|
yotta [Y] 1 000 000 000 000 000 000 000 000 |
= 10^24 |
zetta [Z] 1 000 000 000 000 000
000 000 |
= 10^21 |
exa [E] 1 000 000 000 000 000 000 |
= 10^18 |
peta [P] 1 000 000 000 000 000 |
= 10^15 |
tera [T] 1 000 000 000 000 |
= 10^12 |
giga [G] 1 000 000 000 |
(a thousand millions = a billion) |
mega [M] 1 000 000 |
(a million) kilo [k] 1 000 (a thousand) |
| hecto [h] 100 | |
| deca [da] 10 | |
| 1 | |
| deci [d] 0.1 | |
| centi [c] 0.01 | |
| milli [m] 0.001 | (a thousandth) |
| micro [µ] 0.000 001 | (a millionth) |
| nano [n] 0.000 000 001 | (a thousand millionth) |
| pico [p] 0.000 000 000 001 | = 10^-12 |
| femto [f] 0.000 000 000 000 001 | = 10^-15 |
| atto [a] 0.000 000 000 000 000 001 | = 10^-18 |
| zepto [z] 0.000 000 000 000 000 000 001 | = 10^-21 |
| yocto [y] 0.000 000 000 000 000 000 000 001 | = 10^-24 |