Last checked September 2026 against 15 sources · Editorial policy
Menopause age calculator
This menopause age calculator estimates when yours is likely from your mother's age at menopause, smoking and your current cycle. The US average is 52, and the usual range is 45 to 58. If you're already going 60 days or more without a period, your final period usually comes within 1 to 3 years, which says more than any average.
- Free · 5 questions
- Based on your mother's age, smoking and your cycle
- Shows how the estimate is made
Menopause age by the numbers
- Office on Women's Health, US Department ↗
52
is the average age of menopause in the United States.
- Office on Women's Health, US Department ↗
45–58
is the usual range for the age of menopause.
- Snieder et al. 1998 ↗
63%
of the variation in menopause age was explained by genes in a twin study.
- Office on Women's Health, US Department ↗
Up to 2 years
earlier is when smokers can reach menopause, compared with nonsmokers.
How the menopause age calculator works
- 1
The estimate starts from your mother's age at natural menopause, which the US Office on Women's Health calls one way to tell when you might reach yours. Without it, it starts from the US average of 52.
- 2
If you smoke, or quit less than 10 years ago, the estimate moves up to 2 years earlier. Women who quit more than 10 years ago had the same risk of early menopause as women who never smoked.
- 3
If you've gone 60 days or more without a period, the estimate comes from your cycle instead: that stage, the late transition, lasts 1 to 3 years on average.
- 4
It's a guide, not a forecast. Genes explained 63% of the variation in menopause age in a twin study, and pregnancies, health conditions and other factors account for the rest, so no calculator can give you an exact year.
Menopause age calculator: expectation vs reality
What people often expect
“A calculator can tell me the year I'll reach menopause”
What the evidence shows
No calculator can. Genes explained 63% of the variation in menopause age in a twin study, and smoking, pregnancies and health conditions nudge the rest. Once your cycle starts changing, it predicts better than any formula: after you start going 60 days or more without a period, the final period usually comes within 1 to 3 years.
Beyond the calculator: check your menopause stage
- 1
8 questions on your cycle
How regular your periods are, whether one cycle has been a week or more longer or shorter than the one before, and the longest gap in the last 12 months. This places you on STRAW+10: late reproductive, early transition, late transition or postmenopause.
- 2
16 symptoms, scored 0 to 4
How much each has affected you over the past 4 weeks, across heat, sleep, mood, focus and body. The total runs from 0 to 64.
- 3
Your result, free
Your stage with the reason for it, your symptom score, the area that leads, and what else is worth ruling out. Retake it in 90 days to see what changed.
- 4
Optional: a report for your doctor
One page for your appointment, built from your answers and daily log. The doctor-ready report and daily tracking come with a 7-day trial for $1, then $99 a year. Cancel anytime.
| 0–8 | Minimal | Few symptoms right now. |
|---|---|---|
| 9–18 | Mild | Noticeable, but not running your days. |
| 19–30 | Moderate | Affecting more than one part of your day. |
| 31–44 | Marked | Affecting several areas at once. |
| 45–64 | Severe | Heavy symptom load. |
Example result: age 48 · 60+ days without a period this year · score 31, marked · heat leads.
Start the free check
What decides your menopause age
Your mother's age at menopause
Menopause age runs in families. In a study of 275 identical and 353 non-identical twin pairs, genes explained 63% of the variation in the age women reached menopause, and both early and late menopause ran in families. The US Office on Women's Health suggests your mother's age at menopause as one way to tell when you might reach yours. Ask her, or another older relative, if you can.
Smoking and menopause age
Smoking is the clearest lifestyle factor. Smokers can reach menopause as many as 2 years before nonsmokers. In a pooled analysis of 17 studies, current smokers had about twice the risk of menopause before 40 (relative risk 2.05) and before 45 (1.80). Quitting helps: women who had stopped more than 10 years earlier had the same risk as women who never smoked.
Your cycle: the best guide once it changes
Averages matter less once your own cycle starts changing. When the length of your cycle varies by 7 days or more from one cycle to the next, you've entered the early transition, which varies in length. Once you go 60 days or more without a period, you're in the late transition, which lasts 1 to 3 years on average. Menopause is confirmed 12 months after the final period.
Pregnancies, the pill and other factors
Having children is linked with a slightly later menopause. In the Nurses' Health Study II, which followed 108,887 women, those with 2 or more pregnancies were less likely to reach menopause before 45. In SWAN, having given birth and past use of the pill were linked with later menopause, while lower education, not being employed and a history of heart disease were linked with earlier menopause. These effects are modest.
Early, average and late menopause
Menopause before 40 is premature, also called premature ovarian insufficiency, and between 40 and 45 it's early; about 5% of women go through early menopause naturally. In a pooled analysis of 17 studies, 1.9% of women reached menopause before 40. Menopause at 55 or later counts as late. The age matters for later health: menopause before 40 was linked with a 1.55 times higher risk of heart disease or stroke.
When menopause age can't be estimated
Chemotherapy, pelvic radiation and surgery to remove both ovaries can cause menopause at any age, so family history and smoking stop being useful guides. Hormonal contraception and HRT can hide when menopause happens, because the bleeding comes from the treatment. If you can't tell when your last natural period was, UK experts say contraception can be stopped at 55, when pregnancy risk is extremely low.
When menopause age needs a doctor
Periods stop or become irregular before 40
See a doctor. It may be premature ovarian insufficiency, diagnosed with 2 FSH blood tests 4 to 6 weeks apart. More →
Periods stop between 40 and 45
See a doctor. After early menopause, HRT is usually advised until at least the average age of menopause, to protect bones and heart.
Still having periods at 55 or later
Talk to your doctor. Late menopause is linked with a higher risk of uterine cancer.
Any bleeding after 12 months without a period
See a doctor. Bleeding after menopause always needs checking. More →
Menopause age calculator: questions women ask
How accurate is a menopause age calculator?
It gives a rough guide, not a date. Genes explain about 63% of the variation in menopause age, and smoking and pregnancies nudge the rest. Once you start going 60 days or more without a period, your cycle is the better predictor: the final period usually comes within 1 to 3 years.
How can I predict when I'll go through menopause?
Start with your mother's age at menopause, then adjust up to 2 years earlier if you smoke. When your periods start changing, track them: gaps of 60 days or more mean menopause is usually 1 to 3 years away.
Will I go through menopause at the same age as my mother?
Often around the same age, because timing is largely inherited: genes explained 63% of the variation in a twin study. It's a guide, not a guarantee, and smoking can bring yours earlier.
Does smoking make menopause come earlier?
Yes, by up to 2 years. Current smokers had about twice the risk of menopause before 40 in a pooled analysis. After 10 years without smoking, the risk was the same as for never-smokers.
Related →What is the average age of menopause?
52 in the United States, with a usual range of 45 to 58. In SWAN, a study of US women, the median age at natural menopause was 51.4.
Related →How long after periods become irregular does menopause happen?
It depends on the stage. The early transition, when cycle length starts varying, differs from woman to woman. Once you go 60 days or more without a period, the final period usually comes within 1 to 3 years. Perimenopause as a whole lasts about 4 years on average.
Does having children delay menopause?
Slightly. Women with 2 or more pregnancies were less likely to reach menopause before 45 in a study of 108,887 women, and breastfeeding was linked with lower risk too. The effect is modest.
Does the pill delay menopause?
No, but it can hide it: the monthly bleeds come from the pill, not your own cycle. If you can't tell when your natural periods stopped, contraception can be stopped at 55.
Is the calculator free?
Yes, and so is the full stage check it leads to. The doctor-ready report and daily tracking come with a 7-day trial for $1, then $99 a year. Cancel anytime.
Sources
- Office on Women's Health, US Department of Health and Human Services. Menopause basics.
- Harlow SD, Gass M, Hall JE, et al. Executive summary of the Stages of Reproductive Aging Workshop + 10. J Clin Endocrinol Metab. 2012;97(4):1159-1168.
- Snieder H, MacGregor AJ, Spector TD. Genes control the cessation of a woman's reproductive life: a twin study of hysterectomy and age at menopause. J Clin Endocrinol Metab. 1998;83(6):1875-80.
- Gold EB, Bromberger J, Crawford S, et al. Factors associated with age at natural menopause in a multiethnic sample of midlife women. Am J Epidemiol. 2001;153(9):865-74.
- Office on Women's Health, US Department of Health and Human Services. Early or premature menopause.
- Zhu D, Chung HF, Pandeya N, et al. Relationships between intensity, duration, cumulative dose, and timing of smoking with age at menopause: A pooled analysis of individual data from 17 observational studies. PLoS Med. 2018;15(11):e1002704.
- NICE. Menopause: identification and management (NG23). Updated 2024.
- Langton CR, Whitcomb BW, Purdue-Smithe AC, et al. Association of Parity and Breastfeeding With Risk of Early Natural Menopause. JAMA Netw Open. 2020;3(1):e1919615.
- Zhu D, Chung HF, Dobson AJ, et al. Age at natural menopause and risk of incident cardiovascular disease: a pooled analysis of individual patient data. Lancet Public Health. 2019;4(11):e553-e564.
- Women's Health Concern (British Menopause Society). Contraception for women over the age of 40. Fact sheet, 2025.
- NHS. Early or premature menopause.
- NHS. When to take hormone replacement therapy (HRT).
- NHS. Womb (uterus) cancer: causes.
- NHS. Postmenopausal bleeding.
- McKinlay SM, Brambilla DJ, Posner JG. The normal menopause transition. Maturitas. 1992;14(2):103-15.
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