Progesterone to Estrogen Ratio (Pg/E2) Calculator

Your details

Your progesterone lab result. Mid-luteal reference: 11-29 ng/mL (35-92 nmol/L or 11,000-29,000 pg/mL).
Your estradiol lab result. Mid-luteal reference: 19-160 pg/mL (70-600 pmol/L).
The ratio is only clinically meaningful when blood is drawn during the mid-luteal phase. Select the phase that matches your lab draw.
Pg/E2 RatioWithin 100-500
150

Progesterone (pg/mL) divided by Estradiol (pg/mL)

Progesterone (pg/mL)15,000
Estradiol (pg/mL)100
Balance statusWithin the quoted 100-500 band
150 Pg/E2
Below 100<100100-500100-500Above 500500+

Pg/E2 ratio is 150.0 - inside the commonly quoted 100-500 band

  • Your ratio falls inside the 100-500 band that this scale treats as balanced. Note that this band is a convention rather than a laboratory reference interval.
  • Your values converted to a common unit: progesterone 15000 pg/mL and estradiol 100.0 pg/mL.
  • For general interest only, not medical advice. No professional body - not the Endocrine Society, ACOG, or any menopause society - publishes a reference range for the Pg/E2 ratio, and "estrogen dominance" is not a recognised medical diagnosis. Cleveland Clinic notes only that "some healthcare providers call this estrogen dominance".
  • The band is also wider in practice than it looks: ordinary mid-luteal values of progesterone 11-29 ng/mL and estradiol 19-160 pg/mL produce ratios anywhere from roughly 70 to 1,500, so a result outside 100-500 does not by itself mean anything is wrong.
  • The 100-500 band is quoted for mid-luteal draws (days 19-22 of a 28-day cycle, or 5-7 days after confirmed ovulation), which is when progesterone peaks.

Next stepShare this result with your gynecologist or reproductive endocrinologist, who can interpret it alongside your symptoms, medical history, and other labs.

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