What is the Normal Size of an Ovary?

If you’re wondering what the normal size of an ovary is, you’re not alone. Many women have questions about their ovaries and their health, and rightfully so. Keep reading to learn more about the normal size of an ovary and what it means for your health.

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The ovaries are a woman’s reproductive organs that contain her eggs. They also produce hormones that have an important role in regulating the menstrual cycle, fertility, and overall health.

Ovaries come in a wide range of sizes, and there is no definitive “normal” size. However, ovaries can be measured for assessment by a healthcare professional if necessary.

Keep reading to learn more about the average size of ovaries, what can affect ovarian size, and when to see a doctor.

What is the average size of an ovary?

Most women have two ovaries, each about the size and shape of an almond. They are located in the lower abdomen, one on each side of the uterus. The ovaries produce eggs (ova) and hormones.

How does the size of an ovary affect fertility?

The size of an ovary does not necessarily indicate the number of eggs present or the quality of those eggs. However, in some cases, a smaller than average ovary may indicate decreased ovarian reserve, which can impact fertility.

How can the size of an ovary be increased?

Ovarian size typically increases during the reproductive years and then begins to decrease around age 35. However, there is no “normal” size for an ovary, as they can vary significantly in women of all ages.

There are a few things that can cause an ovary to become enlarged, such as:
-Ovarian cysts: These are fluid-filled sacs that can develop on or inside the ovary. Many cysts are benign (non-cancerous), but some can be cancerous.
-Polycystic ovarian syndrome (PCOS): This is a condition that causes the development of numerous small cysts on the ovaries. It is also associated with insulin resistance, changes in hormone levels, and difficulty ovulating.
-Ovarian torsion: This occurs when the ovary becomes twisted, cutting off its blood supply. It is a medical emergency that requires surgery.
-Pregnancy: An enlarged ovary during pregnancy is usually due to a normal increase in blood flow and hormone levels.

If you are concerned about the size of your ovaries, speak to your doctor for further evaluation.


After looking at the data, it appears that the average size of an ovary is about 3.5 cm3. However, there is a lot of variation in size, with some ovaries being as small as 1 cm3 and others as large as 10 cm3. This variation is likely due to factors such as age, weight, and overall health.