How Big Is My Uterus at 23 Weeks Pregnant? | Mango Size

At 23 weeks pregnant, your uterus is about the size of a large mango, with the top sitting roughly 1.5 inches above your belly button.

Feeling your belly grow is one of the more tangible signs of pregnancy, but it is natural to wonder exactly what is happening inside. You might catch yourself comparing your bump to a piece of fruit or a sports ball, partly because pregnancy guides love those analogies. At 23 weeks, you are in a rapid growth phase, and both comparisons actually hold up well.

The honest answer is that your uterus is roughly the size of a large mango — or, if you prefer, a soccer ball. These aren’t random comparisons alone; they reflect a specific point in your pregnancy where the top of your uterus (your fundus) is reaching past your belly button. We will walk through exactly what that means for your body, your baby, and those routine belly measurements at your prenatal appointments.

What Does the Uterus Look Like at 23 Weeks

By week 23, your uterus has grown significantly from its pre-pregnancy size. Before conception, it was roughly the size of an upside-down pear. At 23 weeks, it has expanded upward and outward to fill a much larger space.

The top of the uterus, called the fundus, can now be felt about 1.5 inches (roughly 3.8 cm) above your belly button. This is why your bump is becoming much more pronounced and noticeable under most clothing.

This growth is necessary to accommodate your baby, who is now about 11 inches long (crown to heel) and weighs just over a pound. There is a lot of activity and development happening in that space.

Why These Size Comparisons Stick

Pregnancy size comparisons exist for a clear reason: it is hard to visualize inches from a chart. A large mango or a soccer ball is something you can hold in your hands or picture clearly. These visual cues help you connect with the physical changes your body is going through.

• Large Mango (NHS): The NHS compares your 23-week uterus to a large mango. It is a common, relatable fruit that gives a good sense of the size and shape at this stage.
• Soccer Ball (WebMD): WebMD uses the soccer ball analogy. It emphasizes the round, full nature of the uterus as it fills the abdominal cavity.
• Papaya (Second Trimester): Earlier in the second trimester, your uterus was closer to the size of a papaya. The jump from papaya to mango shows how much growth happens in just a few weeks.
• Upside-Down Pear (Pre-Pregnancy): Thinking back to your pre-pregnancy uterus (about 1 ounce, tucked in the pelvis), the transformation is remarkable.
• Fundal Height in Centimeters: Beyond analogies, your provider measures fundal height. At 23 weeks, the measurement is typically around 23 to 27 centimeters.

These varied comparisons serve the same purpose: giving you a reliable mental image. Whether you imagine a mango or a soccer ball, the key takeaway is that your uterus is now firmly an abdominal organ, having risen well above the pelvis.

What Fundal Height Tells Your Provider

Your healthcare provider tracks uterine growth by measuring fundal height. This is the distance from your pubic bone to the top of your uterus. It is a simple tape-measure test done at prenatal visits starting around week 20. Telemedicine providers often cite WebMD’s size of a soccer ball comparison to help patients visualize this growth.

The measurement in centimeters generally corresponds to your week of pregnancy. Cleveland Clinic notes that it is perfectly normal for this measurement to be off by about 2 centimeters. So, anywhere from 21 to 25 centimeters is usually considered within the expected range for week 23.

It is important to remember that this is just a screening tool. It is not an exact science. A single measurement that is slightly off is rarely a cause for concern. Your provider looks at the overall growth trend over several visits, not just one number.

These comparisons offer a general roadmap, but every body and every pregnancy is slightly different. The real tracking tool remains the fundal height measurement taken at your checkups.

When Fundal Height Measures Differently

It can be unsettling if your doctor or midwife says your fundal height is measuring a bit behind or ahead. In most cases, being off by a couple of centimeters is normal. Here is what your provider typically considers.

1. Incorrect Due Date: The most common reason for a mismatch. If your dates are off, your fundal height will reflect the actual gestational age, not the estimated one.
2. Fetal Position: If your baby is transverse (lying sideways) or very low in the pelvis, it can affect how the fundal height measures on the outside.
3. Consistent Growth Trend: Providers care less about a single number and more about the growth curve. If you are measuring 23 cm at week 23 and 27 cm at week 27, the trend is steady.
4. Maternal Factors: If you have a high BMI or a very tight abdominal wall, it can be harder to get a precise measurement with a tape.

If there is a consistent trend toward measuring small or large, your provider may order an ultrasound. IUGR (intrauterine growth restriction) is defined as a fetal weight below the 10th percentile, which is far more specific than a tape measure alone can determine.

Baby’s Size and Position at 23 Weeks

While your uterus is expanding, so is your baby. At 23 weeks, the NHS compares your uterus to the size of a large mango, but what about the baby inside it?

Your baby is now over 11 inches long (crown to heel) and weighs about 1.1 pounds. The skin is still thin and translucent, but fat is starting to develop underneath. Your baby is also practicing breathing movements, swallowing amniotic fluid, and may even have a case of the hiccups that you can feel.

Fetal position at this stage can vary widely. Some babies are head-down, some are breech, and some are transverse. At this point, position is fluid because there is still ample room for the baby to move around. Fundal height alone does not reliably tell you the baby’s exact position.

The Bottom Line

At 23 weeks, your uterus is about the size of a large mango or a soccer ball, sitting about 1.5 inches above your belly button. These comparisons are a helpful way to track your pregnancy’s progress. While fundal height measurements are a useful screening tool, it is normal to be off by a centimeter or two without signaling a problem.

Your obstetrician or midwife can correlate your fundal height with your specific growth pattern, medical history, and ultrasound findings to give you the most accurate picture of your baby’s well-being.