Fetal Heart Rate Chart & Calculator
Track normal fetal heart rate by week of pregnancy. Understand baseline, variability, and what to expect during each trimester.
Disclaimer: This tool is for informational purposes only and does not replace professional medical advice. Always consult your healthcare provider for concerns about fetal heart rate.
Understanding Fetal Heart Rate Patterns
At Week 20
Normal Range
120-160
BPM
Baseline Heart Rate
140
BPM avg
Status
Second trimester - heart rate stabilizing
Understanding Fetal Heart Rate Patterns
Fetal heart rate (FHR) monitoring is an important tool for assessing fetal well-being during pregnancy. The normal FHR changes throughout gestation.
Baseline Heart Rate
Baseline: The average heart rate over a 10-minute period, excluding accelerations and decelerations. Normal baseline is 110-160 bpm.
Heart Rate Variability
Variability: Fluctuations in baseline heart rate. Normal variability indicates a healthy, responsive fetal nervous system.
Accelerations
Accelerations: Temporary increases in heart rate of at least 15 bpm above baseline, lasting at least 15 seconds. These are reassuring signs.
Decelerations
Decelerations: Temporary decreases in heart rate. Early decelerations are usually benign, but variable or late decelerations may require medical attention.
When to Be Concerned
- Heart rate consistently below 110 bpm (bradycardia)
- Heart rate consistently above 160 bpm (tachycardia)
- Decreased or absent fetal movements
- Absent or minimal heart rate variability
- Repetitive decelerations
- Any sudden or significant changes in patterns
- Reduced fetal movement pattern