One of the most emotional moments in pregnancy is hearing your baby's heartbeat for the first time. Understanding what a normal fetal heart rate looks like and how it changes throughout pregnancy can help you feel more connected to your baby's development and more informed during your prenatal appointments.
What is Fetal Heart Rate?
Fetal heart rate (FHR) is the number of times your baby's heart beats per minute (BPM). It is a key indicator of your baby's health and wellbeing during pregnancy. Healthcare providers monitor fetal heart rate at prenatal appointments to assess how your baby is developing and coping with the pregnancy.
How Does It Change Through Pregnancy?
Fetal heart rate follows a predictable pattern of change during pregnancy. In early pregnancy, the heart rate is relatively fast—often between 110 and 180 BPM—as the primitive heart tube develops and begins to beat. As pregnancy progresses and the baby's autonomic nervous system matures, the heart rate gradually slows to a more steady pace, eventually settling around 110 to 160 BPM by the third trimester. Understanding these ranges helps parents contextualize the heart tones they hear at prenatal visits.