Enter your estradiol value — in either unit — and we’ll convert it, plot it against the standard sensitive-assay range, and tell you what zone you’re in.
Quick answer
To convert pg/mL to pmol/L, multiply by 3.671. To go the other way, divide by 3.671. The most widely cited adult-male reference range on the LabCorp sensitive assay is 8 – 35 pg/mL (29 – 128 pmol/L). The calculator below converts either direction and shows which interpretation zone your value falls in.
Estradiol shows up on a lot of men’s hormone panels — often without much explanation. The number sits there next to testosterone, the units depend on whether your lab follows US or international convention, and the reference range can look reassuringly normal on one report and alarming on another, even when the value is the same.
The two friction points are almost always the same: units (“is 88 pmol/L the same as 24 pg/mL?”) and zones (“is 42 high?”). The calculator below handles both.
For a complete guide to what high and low estradiol means in men, causes, and the sensitive assay explained, see the full Estradiol in Men guide on HealthMatters.
Convert & interpret your estradiol
Type a number above to see your zone
The calculator interprets values against the LabCorp sensitive-assay reference range for adult men (8 – 35 pg/mL).
How to read your result
The bar is divided into four zones. Each one has a different question attached.
Decode your own result in 30 seconds
Enter your value and get a personal interpretation — what your number means in plain language, what to pair it with, and when to follow up.
Low — under 8 pg/mL (29 pmol/L)
Very low estradiol in men is unusual on a casual panel. It shows up most often in men taking aromatase inhibitors (often alongside TRT) and is worth flagging because chronically low estradiol contributes to bone density loss, joint stiffness, and low libido — symptoms that are easy to misattribute to low testosterone alone.
Normal — 8 to 35 pg/mL (29 to 128 pmol/L)
This is the reassuring zone on the LabCorp sensitive assay. A value here usually doesn’t need follow-up on its own, but estradiol is best read in context: pair it with total testosterone, LH, and FSH to see whether the whole HPG axis is in balance.
Elevated — 35 to 60 pg/mL (128 to 220 pmol/L)
This range is above the LabCorp upper limit but still inside the Quest Diagnostics reference interval. That’s why which lab ran the test matters. If your value sits here and your lab’s printed range includes it, you may not be flagged at all. Common contributors include higher body fat (more aromatization), heavy alcohol use, and exogenous testosterone without an AI.
High — above 60 pg/mL (220 pmol/L)
This is above both major US reference ranges. Symptomatic evaluation matters here — gynecomastia, mood symptoms, water retention, and reduced libido are the usual reasons men test in this zone. At very high values (well into triple digits in pg/mL), clinicians will typically rule out estrogen-secreting tumours and significant liver dysfunction before assuming a benign cause.
A note on units
US lab reports almost always use pg/mL (picograms per millilitre). UK, EU, and Australian reports more often use pmol/L (picomoles per litre). Both measure the same thing — they just count estradiol molecules in different units.
The conversion factor is 3.671, derived from estradiol’s molecular weight. So a result of 24 pg/mL is the same as 88 pmol/L. If your report uses one and the reference range uses the other, this calculator will reconcile them in one step.
