per cubic millimeter
Number densityexact by definition
The per cubic millimetre is exactly 10⁹ m⁻³, identical in value to per microlitre because a cubic millimetre is a microlitre. Older haematology and cerebrospinal fluid reports use it, and the identity is why a CSF white cell count of 5/mm³ and 5/μL are the same result.
| 1 | 1,000,000,000 |
One per cubic millimeter in every number density unit
| 1,000,000,000 | per cubic meter (m⁻³) | |
| 28,316,800 | per cubic foot (ft⁻³) | |
| 1,000,000 | per liter (L⁻¹) | |
| 1,000 | per cubic centimeter (cm⁻³) | |
| 1,000 | per milliliter (mL⁻¹) | |
| 1 | per microliter (μL⁻¹) | |
| 1 | per cubic millimeter (mm⁻³)this unit | |
| 3.72193e-17 | amagat (amagat) | |
| 1.00000e-21 | per cubic angstrom (Å⁻³) |