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What is the normal size of the uterus?

Sep 13, 2022 Source: Cainiu Health
Dr. Lv Aiming
Introduction
A normally sized uterus measures 7–9 cm in length, 4.5–5.5 cm in width, and 3–4 cm in thickness. The uterus is one of the female reproductive organs, a hollow organ shaped like an inverted pear, slightly tilted forward and convex posteriorly. In adult women, the uterus typically weighs about 50 grams, with a size generally measuring 7–9 cm long, 4.5–5.5 cm wide, and 3–4 cm thick, and has a capacity of approximately 5 milliliters; this is considered a normal uterus.

The uterus is a vital reproductive organ in women, playing a crucial role in reproduction. However, during comprehensive gynecological examinations, some women may be found to have abnormal uterine size—either smaller or larger than normal. So, what is the normal size of the uterus?

What is the normal size of the uterus?

A normal uterus measures approximately 7–9 cm in length, 4.5–5.5 cm in width, and 3–4 cm in thickness. The uterus is one of the female reproductive organs—an inverted pear-shaped hollow organ that tilts slightly forward and protrudes slightly backward. In adult women, the uterus typically weighs about 50 grams, with a capacity of approximately 5 milliliters, which represents the normal uterine size.

The endometrium (uterine lining) changes cyclically due to ovarian hormones. Under the influence of estrogen during the proliferative phase, the endometrial thickness increases from 0.05 cm to 1–3 cm. During menstruation, as progesterone and estrogen levels decline, the endometrium breaks down and sheds, causing blood to flow out through the vagina—this marks the onset of menstrual bleeding. The uterus may also develop abnormalities such as cervical inflammation, endometriosis, adenomyosis, or congenital uterine malformations. Additionally, cervical tumors may occur. Patients may experience symptoms including menstrual irregularities, abnormal vaginal discharge, or lower abdominal pain, and should seek timely medical attention to prevent harm to their health.

In daily life, individuals should pay attention to keeping the uterus warm and maintaining good hygiene of the genital area. Pregnant women should undergo regular check-ups at hospitals to monitor the health of the uterus. We hope this information is helpful. Wishing you good health and a happy life!

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