Fundal Height Calculator
Health & FitnessEstimate the expected symphysis-fundal height for a given gestational age using the INTERGROWTH-21st standard.
Expected Fundal Height (median)
The expected median symphysis-fundal height for this gestational age, using the INTERGROWTH-21st standard.
Typical Range
24.7 - 30.7 cm
A commonly-used rule of thumb range of plus or minus 3cm around the expected median.
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Odeh Ahwal0people find this calculator helpful
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Saved
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Frequently Asked Questions
What is fundal height?
Fundal height is the distance in centimeters from the top of the pubic bone to the top of the uterus, measured during prenatal visits. It is a simple way to track fetal growth.
What formula does this calculator use?
This calculator uses the INTERGROWTH-21st standard formula for expected median symphysis-fundal height based on gestational age in weeks.
Is the plus-or-minus 3cm range an official clinical range?
It is a commonly-used general rule of thumb, not the precise percentile chart your doctor uses. After 20 weeks, fundal height in centimeters roughly tracking gestational age in weeks, within a few centimeters, is generally considered reassuring.
What does it mean if my fundal height is outside the typical range?
A fundal height noticeably outside the typical range can have several explanations, including differences in due date accuracy, fetal position, amniotic fluid levels, or fetal growth. Your doctor may recommend an ultrasound to investigate further.
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