SI Units and Metric Units Prefixes
SI Base Units
| Quantity | Unit | Symbol |
| length | metre | m |
| mass | kilogram | kg |
| time | second | s |
| electric current | ampere | A |
| temperature | kelvin | K |
| amount of substance | mole | mol |
| light intensity | candela | cd |
Other Common Units
| volume | litre | L |
| force | newton | N |
| energy | joule | J |
| pressure | pascal | Pa |
| temperature | degree Celsius | OC |
Metric Prefixes
| Prefix | Symbol | Magnitude |
| tera | T | 1012 |
| giga | G | 109 |
| mega | M | 106 |
| kilo | k | 103 |
| hecto | h | 102 |
| deca | d | 101 |
| deci | da | 10-1 |
| centi | c | 10-2 |
| milli | m | 10-3 |
| micro | m | 10-6 |
| pico | p | 10-9 |
| femto | f | 10-12 |