How Do You Measure a Pregnancy Bump

Your bump will be measured by your midwife during your routine antenatal appointments. She’ll ask you to lie down and will measure from the top of your pubic bone to the top of your uterus using a tape measure. This is known as the symphysis-fundal height measurement, and is used to monitor the growth of the fetus.

How do I measure my pregnant belly?

Using a tape measure that measures centimeters, place the zero marker at the top of the uterus. Move the tape measure vertically down your stomach and place the other end at the top of your pubic bone. This is your fundal height measurement.

What should my bump measure at 20 weeks?

As a rule of thumb, your fundal height in centimeters should roughly equal the number of weeks you’re pregnant. For example, at 20 weeks, your fundal height should be about 17 to 23 centimeters.