17-OHP unit converter
Convert 17-OHP between ng/dL, nmol/L and ng/mL. 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 ng/dL = 0.0303 nmol/L. Nothing you type here leaves your browser.
The conversion
- 1 ng/dL = 0.03026 nmol/LFrom ng/dL to nmol/L: divide by 33.05. Back again: multiply by 33.05.
- 1 ng/dL = 0.01 ng/mLFrom ng/dL to ng/mL: divide by 100. Back again: multiply by 100.
Mass and molar units are linked by the molecular weight: 330.5 g/mol (17-hydroxyprogesterone, C21H30O3 (PubChem CID 6238)). Source: NCBI PubChem.
Common values
From zero to about twice the usual upper limit, plus the usual limits themselves.
| ng/dL | nmol/L | ng/mL |
|---|---|---|
| 50 | 1.5 | 0.5 |
| 100 | 3 | 1 |
| 150 | 4.5 | 1.5 |
| 200 | 6.1 | 2 |
| 207 | 6.3 | 2.07 |
| 220 | 6.7 | 2.2 |
| 250 | 7.6 | 2.5 |
| 300 | 9.1 | 3 |
| 350 | 10.6 | 3.5 |
| 400 | 12.1 | 4 |
Usual ranges in each unit
What labs print as the reference range, by who was tested. Sources for each range are on the 17-OHP page.
| Who | ng/dL | nmol/L | ng/mL |
|---|---|---|---|
| Men, 18+ | up to 220 | up to 6.7 | up to 2.2 |
| Women, 18+, follicular phase | 15–70 | 0.5–2.1 | 0.15–0.7 |
| Women, 18+, luteal phase | 35–290 | 1.1–8.8 | 0.35–2.9 |
| Women, postmenopausal | up to 51 | up to 1.5 | up to 0.51 |
| Women, 18+ | up to 207 | up to 6.3 | up to 2.07 |