Derived units are part of the SI system of measurement units and are derived (obtain by combining) from the seven SI base units. Distance divided by time equals speed. If we multiply length by length, we get area. Area multiplied by length produces volume.

The SI unit of volume is the cubic meter (m³). However, this quantity is too large to be practical for the laboratory. Chemists often use cubic decimeters (dm³) as the unit of volume.

One cubic decimeter is given another name, the liter (L). The liter is a unit of volume. One liter equals 1000 milliliters (mL) and 1000 cubic centimeters (cm³). From these facts, you can see that:

1 dm³ = 1 L = 1000 mL = 1000 cm³

Source and table of derived units is available here