Chinese Pregnancy Calculator

Chinese Pregnancy Gender Predictor

(This is often your Gregorian age + 1, or calculated based on Chinese New Year. Typically between 18 and 45.)
Select Lunar Month 1 (Jan/Feb) 2 (Feb/Mar) 3 (Mar/Apr) 4 (Apr/May) 5 (May/Jun) 6 (Jun/Jul) 7 (Jul/Aug) 8 (Aug/Sep) 9 (Sep/Oct) 10 (Oct/Nov) 11 (Nov/Dec) 12 (Dec/Jan) (This is the month according to the Chinese Lunar Calendar.)

Disclaimer: The Chinese Pregnancy Calendar is a traditional folk method and is not scientifically proven. It is for entertainment purposes only.

function calculateChineseGender() { var lunarAgeInput = document.getElementById("lunarAge").value; var lunarMonthInput = document.getElementById("lunarMonth").value; var resultDiv = document.getElementById("result"); var lunarAge = parseInt(lunarAgeInput); var lunarMonth = parseInt(lunarMonthInput); if (isNaN(lunarAge) || lunarAge 45) { resultDiv.style.backgroundColor = '#f8d7da'; resultDiv.style.borderColor = '#f5c6cb'; resultDiv.style.color = '#721c24'; resultDiv.innerHTML = "Please enter a valid Lunar Age between 18 and 45."; return; } if (isNaN(lunarMonth) || lunarMonth 12) { resultDiv.style.backgroundColor = '#f8d7da'; resultDiv.style.borderColor = '#f5c6cb'; resultDiv.style.color = '#721c24'; resultDiv.innerHTML = "Please select a valid Lunar Month (1-12)."; return; } // Chinese Gender Chart Data (based on a commonly cited traditional chart) // 'B' for Boy, 'G' for Girl // Rows represent Lunar Age, Columns represent Lunar Month (1-12) var chineseGenderChart = { 18: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 19: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 20: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 21: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 22: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 23: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 24: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 25: ['B', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 26: ['G', 'B', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 27: ['B', 'G', 'B', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 28: ['G', 'B', 'G', 'B', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 29: ['B', 'G', 'B', 'G', 'B', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 30: ['G', 'B', 'G', 'B', 'G', 'B', 'B', 'G', 'B', 'G', 'B', 'G'], 31: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'B', 'G', 'B', 'G', 'B'], 32: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'B', 'G', 'B', 'G'], 33: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'B', 'G', 'B'], 34: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'B', 'G'], 35: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'B'], 36: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 37: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 38: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 39: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 40: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 41: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 42: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 43: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'], 44: ['G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B'], 45: ['B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G', 'B', 'G'] }; var predictedGender = chineseGenderChart[lunarAge][lunarMonth – 1]; // -1 because array is 0-indexed resultDiv.style.backgroundColor = '#e9f7ef'; resultDiv.style.borderColor = '#d4edda'; resultDiv.style.color = '#155724'; if (predictedGender === 'B') { resultDiv.innerHTML = "Based on the Chinese Pregnancy Calendar, you are likely to have a BOY!"; } else if (predictedGender === 'G') { resultDiv.innerHTML = "Based on the Chinese Pregnancy Calendar, you are likely to have a GIRL!"; } else { resultDiv.innerHTML = "Could not determine gender. Please check your inputs."; } }

Understanding the Chinese Pregnancy Calendar

The Chinese Pregnancy Calendar, also known as the Chinese Gender Chart or Chinese Birth Chart, is an ancient method believed to predict a baby's gender. Originating from a tomb in Beijing over 700 years ago, this chart is said to have been discovered by a Chinese scientist and is now housed in the Beijing Institute of Science.

How Does It Work?

This traditional chart relies on two key pieces of information:

  1. Mother's Lunar Age at Conception: This is not your standard Gregorian age. In Chinese tradition, a person is considered one year old at birth, and an additional year is added at each Chinese New Year. Therefore, your lunar age is often your Gregorian age plus one, but it can vary depending on your birth date relative to the Chinese New Year and the year of conception. For this calculator, we ask for your calculated lunar age at the time of conception.
  2. Lunar Month of Conception: This refers to the month in which conception occurred, according to the Chinese Lunar Calendar, not the Gregorian calendar. The lunar calendar months do not align perfectly with Western calendar months, so a specific conversion might be needed for precise use. For simplicity, our calculator uses the numerical lunar month (1-12).

Calculating Your Lunar Age and Month

To use the Chinese Pregnancy Calendar accurately, you need to determine your lunar age at the time of conception and the lunar month of conception. While some online tools can help with precise conversions, a common simplification for lunar age is to add one year to your current Gregorian age if you were born before the Chinese New Year of your birth year, or simply add one year if you are using a general approximation. The lunar month of conception can be found by converting your Gregorian conception date to its corresponding lunar month.

Example Calculation:

Let's say a mother's Lunar Age at Conception was 28, and the Lunar Month of Conception was 5.

  • Input: Lunar Age = 28
  • Input: Lunar Month = 5
  • According to the chart embedded in this calculator, a lunar age of 28 and a lunar month of 5 predicts a Boy.

Another example: If the mother's Lunar Age at Conception was 30, and the Lunar Month of Conception was 1.

  • Input: Lunar Age = 30
  • Input: Lunar Month = 1
  • The chart predicts a Boy.

Accuracy and Disclaimer

While many people find the Chinese Pregnancy Calendar to be a fun and intriguing way to guess their baby's gender, it's important to remember that it is a folk tradition. Scientific studies have not consistently proven its accuracy, and its predictions are often considered to be around 50/50, similar to a coin toss. For definitive gender determination, medical methods like ultrasound are the only reliable options.

Enjoy using this calculator for entertainment and curiosity, but always consult with healthcare professionals for accurate medical information regarding your pregnancy.

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