January
February
March
April
May
June
July
August
September
October
November
December
The month the baby was conceived
What is the Chinese Gender Calendar?
The Chinese Gender Calendar, also known as the Chinese Gender Chart or Predictor, is an ancient method used to predict the biological sex of an unborn child. Legend has it that the original chart was discovered in a royal tomb of the Qing Dynasty near Beijing over 700 years ago. Today, it remains a popular cultural tool for expecting parents around the world.
How the Calculation Works
Unlike Western age calculations, the Chinese Gender Calendar relies on two specific variables based on the traditional Chinese Lunar system:
Mother's Lunar Age: In the Chinese lunar system, a person is considered 1 year old at birth, and their age increases at the Lunar New Year rather than their birthday. For this calculator, we approximate this by adding 1 year to the mother's age at the time of conception.
Lunar Month of Conception: This is the month the child was conceived according to the Chinese Lunar Calendar.
Example Calculation:
If a mother was born in May 1995 and conceived in January 2024:
– Her Western age at conception is 28.
– Her Chinese Lunar Age is 29.
– Conception month is 1 (January).
– According to the chart, the predicted result would be "Boy".
The Ancient Chinese Gender Chart Logic
The calculator uses a pre-defined matrix of ages (18 to 45) and months (1 to 12). While many believe in its accuracy, it is important to remember that this tool is designed for entertainment purposes and has no scientific basis in modern biology. For accurate gender determination, medical procedures like ultrasound or NIPT testing are required.
Common Questions
Is the Chinese Gender Predictor accurate? While some claim it is up to 90% accurate, scientific studies suggest the probability is closer to 50%—the same as a random coin flip.
Why do I add a year to my age? Traditional Chinese culture counts the time spent in the womb as the first year of life, which is why your "Lunar Age" is typically one year older than your Western age.
function calculateChineseGender() {
var dobInput = document.getElementById('motherDob').value;
var conMonth = parseInt(document.getElementById('conceptionMonth').value);
var conYear = parseInt(document.getElementById('conceptionYear').value);
var resultBox = document.getElementById('resultBox');
var resultContent = document.getElementById('resultContent');
if (!dobInput || !conYear) {
alert("Please enter all required dates.");
return;
}
var dob = new Date(dobInput);
var birthYear = dob.getFullYear();
// Calculate Age at Conception
var ageAtConception = conYear – birthYear;
// Adjust to Lunar Age (Approx: Western Age + 1)
var lunarAge = ageAtConception + 1;
// Boundary Check (Chart typically covers 18 to 45)
if (lunarAge 45) {
resultBox.style.display = "block";
resultBox.className = "result-display";
resultContent.innerHTML = "