The International System of Units (SI) defines 7 base units as standard units of measurement. They are listed in the table below:
| List of SI base units | ||
| Name | Base quantity | Symbol |
| ampere | electric current | A |
| candela | luminous intensity | cd |
| kilogram | mass | kg |
| metre | length | m |
| mole | amount of substance | mol |
| thermodynamic temperature | kelvin | K |
| second | time | s |
