Estradiol conversion: pg/mL to pmol/L
For estradiol, 1 pg/mL = 3.67123 pmol/L, and 1 pmol/L = 0.272388 pg/mL.
Common values
pg/mL to pmol/L
| pg/mL | pmol/L |
|---|---|
| 5 | 18 |
| 10 | 37 |
| 20 | 73 |
| 30 | 110 |
| 50 | 184 |
| 100 | 367 |
| 150 | 551 |
| 200 | 734 |
| 300 | 1101 |
| 400 | 1468 |
| 500 | 1836 |
| 1000 | 3671 |
pmol/L to pg/mL
| pmol/L | pg/mL |
|---|---|
| 20 | 5.4 |
| 50 | 13.6 |
| 100 | 27.2 |
| 150 | 40.9 |
| 200 | 54.5 |
| 300 | 81.7 |
| 500 | 136.2 |
| 750 | 204.3 |
| 1000 | 272.4 |
| 1500 | 408.6 |
| 2000 | 544.8 |
| 3000 | 817.2 |
Each converted value is worked out in full and then rounded: pmol/L to whole numbers and pg/mL to one decimal place.
Source: molar masses summed from the IUPAC CIAAW abridged standard atomic weights, 2024.
The values are facts and free to use; this table’s selection and presentation are © 2026 ScienceQuest.
Why the factor is specific to estradiol
Estradiol, C₁₈H₂₄O₂, has a molar mass of 272.388 g/mol, summed from the standard atomic weights of its atoms. A result in pg/mL is a mass and one in pmol/L an amount of substance, so converting divides by the molar mass and multiplies by 1000 for the millilitres in a litre: 1 pg/mL = 1000 ÷ 272.388 = 3.67123 pmol/L.
- pmol/L = pg/mL × 1000 ÷ 272.388
- pg/mL = pmol/L × 272.388 ÷ 1000
Which countries report which unit
American laboratories usually report estradiol in pg/mL; British, Canadian and Australian ones report pmol/L, and British and Australian reports often spell it oestradiol.
Worked example
- 100 pg/mL in pmol/L
- = 100 × 1000 ÷ 272.388
- = 367.123 pmol/L