PCOS fertility calculator

See how your cycles, symptoms and test results line up with the international PCOS criteria, estimate your fertile window, and find out when to ask for fertility advice. This tool gives guidance, not a diagnosis, and it cannot predict your chance of pregnancy.

Age (years)

Current situation

Your usual menstrual cycle

Count from the first day of one period to the first day of the next. Fewer than 8 periods a year counts as irregular.

Average cycle length (optional)

Last period started (optional)

Add both to see your predicted fertile window.

Signs of high androgens (male-type hormones). Tick any that apply Excess, coarse hair on the face, chin, chest or abdomen Persistent acne, including acne in adulthood Thinning hair on the scalp A blood test showed high testosterone or free androgens

Ovary tests (ultrasound or AMH blood test)

Has a doctor diagnosed PCOS?

Other details (optional) Dark, velvety skin patches on the neck or underarms A close relative with type 2 diabetes or PCOS

Trying to conceive?

Calculated in your browser. Your details are not saved or sent anywhere.

Answer the questions and select Check my results to see your PCOS pattern, fertile window and next steps here.

Your PCOS pattern

Cycle and fertile window

When to ask for fertility advice

Your next steps

Before you act on these results

This calculator compares your answers with the international PCOS criteria. It is not a diagnosis, and it cannot tell you how likely you are to conceive.

PCOS is common, manageable and often treatable, and many people with PCOS conceive with the right support. Please do not start a medicine, supplement or restrictive diet because of a calculator result. Speak with a qualified clinician first. Worries about fertility can be stressful, and support is available if you need it. If you have severe pain, very heavy bleeding or any urgent symptom, contact your own doctor or emergency services.