168 Baby Heart Rate Gender Prediction Calculator

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168 Baby Heart Rate Gender Prediction Calculator

Enter the heart rate recorded during your ultrasound.

Disclaimer: This calculator is based on an "old wives' tale" myth. There is no scientific evidence that fetal heart rate can accurately predict gender. Please consult a medical professional or wait for an anatomy scan for accurate results.

Understanding the 168 Baby Heart Rate Theory

When you hear a fast, galloping heartbeat during your first or second-trimester ultrasound, it's natural to wonder what it means. One of the most popular myths in the pregnancy world is that a baby's heart rate can reveal their gender. Specifically, the "168 baby heart rate" is often associated with the prediction of a girl.

How the Heart Rate Gender Prediction Works

The theory suggests that there is a physiological difference in how male and female fetuses develop. According to this old wives' tale:

  • Fetal Heart Rate Above 140 BPM: Predicted to be a Girl.
  • Fetal Heart Rate Below 140 BPM: Predicted to be a Boy.

A reading of 168 beats per minute (BPM) sits significantly above the 140-threshold, leading many enthusiasts of this theory to believe with certainty that the baby is a girl.

Is a 168 BPM Heart Rate Normal?

Yes, 168 BPM is a perfectly normal heart rate, especially during the late first trimester (around weeks 9 to 12). During this period, the fetal heart rate peaks and can reach as high as 170-180 BPM. As the pregnancy progresses into the second and third trimesters, the heart rate usually settles into a range of 110 to 160 BPM.

What Science Says

While the 168 baby heart rate gender prediction calculator is a fun way to pass the time before your big reveal, scientific studies (including a notable study published in Fetal Diagnosis and Therapy) have found no significant difference between male and female heart rates during the first trimester. Gender is determined by chromosomes at conception, but physical differences that affect heart rate don't manifest in a way that allows for gender identification via BPM.

Typical Fetal Heart Rate Examples

Heart Rate (BPM) Mythical Prediction Scientific Status
120 BPM Boy Normal
155 BPM Girl Normal
168 BPM Girl Normal
function calculateGender() { var bpmValue = document.getElementById('heartRate').value; var resultArea = document.getElementById('resultArea'); var genderPrediction = document.getElementById('genderPrediction'); var predictionDetail = document.getElementById('predictionDetail'); if (bpmValue === "" || bpmValue 140) { resultArea.style.backgroundColor = '#fff0f6'; resultArea.style.border = '2px solid #fcc2d7'; genderPrediction.style.color = '#d6336c'; genderPrediction.innerHTML = "It's a Girl! (Mythically)"; predictionDetail.innerHTML = "A heart rate of " + bpm + " BPM is higher than the traditional 140 BPM threshold. According to the legend, your baby is more likely to be a girl!"; } else if (bpm < 140) { resultArea.style.backgroundColor = '#e7f5ff'; resultArea.style.border = '2px solid #a5d8ff'; genderPrediction.style.color = '#1971c2'; genderPrediction.innerHTML = "It's a Boy! (Mythically)"; predictionDetail.innerHTML = "A heart rate of " + bpm + " BPM is lower than the traditional 140 BPM threshold. According to the legend, your baby is more likely to be a boy!"; } else { resultArea.style.backgroundColor = '#f8f9fa'; resultArea.style.border = '2px solid #dee2e6'; genderPrediction.style.color = '#495057'; genderPrediction.innerHTML = "Exactly 140 BPM!"; predictionDetail.innerHTML = "You are right on the line! The legend says 140 BPM is the tipping point, making this a 50/50 mythical guess."; } }

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