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Antral Follicle Count Calculator

Enter the antral follicle count for each ovary to get the total AFC and reserve band.

How to use

  1. Enter your values in the fields above.
  2. Press Calculate to see your result instantly.
  3. Use the Share button to copy a link to your result.

About this calculator

An antral follicle count (AFC) is an ultrasound count of the small resting follicles (2–10mm) visible in each ovary at the start of a menstrual cycle, and it's one of the main markers doctors use to estimate a woman's remaining ovarian reserve. This calculator simply adds the left and right ovary counts to get total AFC and places it into a reserve category.

Roughly speaking, a total AFC of 15–30 is considered normal reserve, under 5–7 suggests diminished reserve, and above 25–30 can flag polycystic ovarian morphology — though exact cutoffs vary by lab and age. AFC is measured by transvaginal ultrasound, usually on cycle day 2–5.

Reproductive endocrinologists and fertility specialists use AFC alongside AMH (anti-Müllerian hormone) blood levels to predict how a patient will respond to ovarian stimulation in an IVF cycle — a higher count generally means more eggs retrieved. This tool is for reference only, not medical advice.

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