Menopause Age Estimator & Perimenopause Stage Calculator

What is Menopause Age Estimator?

The Menopause Age Estimator calculates your estimated age of natural menopause and perimenopause onset based on maternal familial history, age at first period (menarche), menstrual cycle regularity, reproductive history, and lifestyle factors. It includes an interactive symptom assessment tool with zero server logging.

Designed for accuracy, speed, and privacy, this tool runs entirely on your local device with zero network latency.

How to Use the Menopause Age Estimator

1. 1
   Enter your current age, your mother's age at natural menopause (default 51), and the age of your first period (menarche).
2. 2
   Select your current menstrual cycle pattern: Regular, Slightly Irregular, Skipping Cycles, or Stopped.
3. 3
   Specify lifestyle factors including smoking status, parity (having biological children), and BMI category.
4. 4
   Check any active symptoms (hot flashes, night sweats, sleep disruption, mood changes, brain fog, fatigue).
5. 5
   View your estimated age of menopause onset, perimenopause phase indicator, and symptom severity score.

Formula & Calculation Logic

Implements an epidemiological statistical model based on peer-reviewed gynecological cohort studies (such as the SWAN and Million Women Studies) weighting maternal genetics, ovarian reserve depletion rates, and lifestyle factors.