< Cycle Calculators

Menopause Calculator

Is it a very late period, or your last period before menopause - ie. 1 year without a period? This calculator determines how long since your last period and how long until menopause. Or, if you are in menopause, shows how long since it started.

Member? Login and cycle history info can be used.

(days; optional)

What is Menopause?

Menopause is the time in a woman's life when menstruation permanently stops. More specifically, a woman is said to be in menopause when she has not had her period for 1 full year*. The average age for menopause in the USA is 51. Menopause occurs due to the decrease in production of estrogen and progesterone by the ovaries.

*Does not include women who are pregnant, lactating, or using birth control pills that stop menstruation.

What is Perimenopause?

Menopause is sometimes referred to as the "change of life". But much of these changes occur during perimenopause, the transitional years leading up to menopause. Perimenopause can begin as early as one's late thirties or early forties. During perimenopause, both periods and menstrual cycles can change, fertility decreases, and a variety of symptoms, including hot flashes and night sweats, can occur.

What Tools Does MyMonthlyCycles Have for Perimenopause / Menopause Tracking?

MyMonthlyCycles offers a complete set of free interactive tools to track both perimenopause and menopause.

With our menstrual cycle tracking calendar and dozens of cycle and symptom charts and reports, available since 2003 and used over the decades by millions of women world-wide, you can easily find out:

  • if the length of your periods (ie. days of flow) is getting shorter or longer.
  • if your period flow is getting lighter or heavier.
  • if your cycles are becoming irregular, varying in cycle length.
  • if and how your weight is being affected by peri-menopause.
  • if you are in or close to menopause by monitoring the calendar's cycle day (CD) counter: once it reaches CD 365, it indicates you've had no period for 1 full year, which, according to the American College of Obstetricians and Gynecologists (ACOG), confirms menopause.

In addition, MyMonthlyCycles has a free peri-menopause symptom tracker, and a hot flash and night sweat journal, extremely helpful during the transition to menopause, so you can look back at any time to determine if your current menopausal symptoms are similar to past ones - that is, are they getting worse or about the same.

More information on MyMonthlyCycles free peri-menopause and menopause tools.

Disclaimer: The information provided on this calculator is for educational purposes only. It is not medical advice and is not intended as a substitute for medical advice. You should not use this information for self-diagnosis or for treating a health problem or disease. You should never disregard medical advice or delay seeking medical advice or treatment because of something you have read herein. If you have any questions whatsoever about your medical health or believe you have a medical problem or disease, you should contact your medical doctor or healthcare provider.