Salivary cortisol unit converter
Convert salivary cortisol between µg/dL, nmol/L, ng/mL and ng/dL. Type in either box. The factors come from our catalog and are checked by code.
AI-verified against cited sources. Awaiting expert reviewLast reviewed 2026-10-03
1 µg/dL = 27.5893 nmol/L. Nothing you type here leaves your browser.
The conversion
- 1 µg/dL = 27.59 nmol/LFrom µg/dL to nmol/L: multiply by 27.59. Back again: divide by 27.59.
- 1 µg/dL = 10 ng/mLFrom µg/dL to ng/mL: multiply by 10. Back again: divide by 10.
- 1 µg/dL = 1,000 ng/dLFrom µg/dL to ng/dL: multiply by 1,000. Back again: divide by 1,000.
Mass and molar units are linked by the molecular weight: 362.46 g/mol (Cortisol (hydrocortisone), C21H30O5. PubChem lists 362.5 (rounded). Quest, Labcorp, ARUP and Mayo conversion tables use the same basis (about x27.6 from µg/dL to nmol/L).). Source: PubChem (NIH).
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the Salivary cortisol page.
| Who | µg/dL | nmol/L | ng/mL | ng/dL |
|---|---|---|---|---|
| morning draw | 0.04–0.56 | 1.1–15.4 | 0.4–5.6 | 40–560 |
| afternoon draw | up to 0.15 | up to 4.1 | up to 1.5 | up to 150 |