The derived SI units are units that have been derived from the SI base units in a coherent matter. These units are presented in the format of exponential products of the SI base units with a numerical factor of 1. (The numerical value of 1 is the characteristic of a coherent system).
Examples:
| Derived quantity | SI derived unit | |
| Name | Symbol | |
| area | square metre | m2 |
| volume | cubic metre | m3 |
| speed, velocity | metre per second | m/s |
| acceleration | metre per second squared | m/s2 |
| wavenumber | reciprocal metre | m–1 |
| density, mass density | kilogram per cubic metre | kg/m3 |
| specific volume | cubic metre per kilogram | m3/kg |
| current density | ampere per square metre | A/m2 |
| magnetic field strength | ampere per metre | A/m |
| concentration (of amount of substance) | mole per cubic metre | mol/m3 |
| luminance | candela per square metre | cd/m2 |
