Serum osmolality unit converter
Concentration of dissolved particles in serum
Also known as: Plasma osmolality, Serum osmolarity, Posm, Sosm, Plasmaosmolalität, Osmolalité plasmatique
Converter
Enter a value in any unit and all other units fill in.
Reference range
| Unit | Adults |
|---|---|
| mOsm/kg = mmol/kg | 275 – 295 |
Source: Pathology Harmony Group (ACB, IBMS, RCPath): Agreed Adult Clinical Biochemistry Reference Intervals, January 2011 · Last reviewed: 2026-10-14
Note from the source: 275-295 mmol/kg. UK Pathology Harmony consensus of the Association for Clinical Biochemistry, the Institute of Biomedical Science and the Royal College of Pathologists.