﻿ Chinese Gender Predictor

# Chinese Gender Predictor

## What is the Chinese Gender Predictor?

The Chinese gender predictor is said to have been created by the eunuchs from the Ching Dynasty (1644-1912). There are multiple versions of the Chinese gender predictor chart on the web. To make sure we present the correct one, we researched Chinese websites, and found that on Chinese sites, there is really only a single version of the Chinese gender predictor chart, and that's the one we show below:

Notice that the lunar age is used for the woman's age at conception, and lunar month is used for the conception month. This is because at the time when this chart was created, the lunar calendar was used throughout China.

## Is there a different Chinese Gender Chart for each year?

There is only one chart, and it can be applied for all years. For example, a "2015 Chinese Gender Predictor" will look the same as a "2016 Chinese Gender Predictor," as will the "2017 Chinese Gender Predictor." In fact, the gender predictor in 1900 would look exactly the same as well. This is because the calendar is based on the woman's age when she gets pregnant. For example, the chart predicts that a 34-year-old (based on lunar age) woman who becomes pregnant in January (based on lunar calendar) will give birth to a boy. This statement is always be true, whether conception happens in 2014, 2015, 2016, or any other year.

## Calculate Lunar Age

In ancient China, lunar age (also called nominal age) is used to calculate how old a person is. Lunar age is always greater than your actual age by one or two years.

Lunar age comes about because the ancient Chinese believed that a person's life starts at conception, and therefore by the time a person is born, that person is already one year old.

For example, let's say a baby boy was born on January 13, 1983. Below is his age at certain key dates:
 Date Lunar Age Actual Age January 13, 1983 1 year old 1 day old February 13, 1983(lunar new year) 2 years old 1 month old January 13, 1984 2 years old 1 year old February 2, 1984(lunar new year) 3 years old 1 year old January 13, 1985 3 years old 2 years old

To calculate a woman's lunar age at the time of conception, use the following formula:

Lunar year of conception - Woman's lunar birth year + 1

For example, if a woman was born in lunar year 1990 and she conceived in lunar year 2015, her lunar age at the time of conception was 2015 - 1990 + 1 = 26.

## Apply the Chinese Gender Predictor

To accurately apply the Chinese gender predictor, you need to convert both your birthday and the conception date to lunar dates, and then use that information to find the predicted gender of the baby. This is a multi-step process. To make this process as easy as possible, we have set up a Chinese gender predictor lookup calculator below, and you only need to enter the woman's birth date and the conception date in Gregorian calendar. The calculator will automatically convert the dates entered into lunar dates and tell you what the Chinese gender predictor says.

## Chinese Gender Calculator

Please enter your birth date:

Please enter your conception date:

## How accurate is the Chinese Gender Predictor?

There are internet sites that claim that the Chinese Gender Predictor has a 70% accuracy, and some claimed even higher accuracy rates. According to a research study published by Villamor et al (2010)1, who examined the birth records of 2.8 million babies in Sweden over a 33-year period, the accuracy of Chinese Gender Predictor was 50%, no better than a flip of coin. Research studies of smaller scale in China and elsewhere have confirmed this finding.

So, unfortunately, the Chinese gender predictor does not do a good job of what it is supposed to do–predicting the sex of your baby. While it doesn't hurt to consult this chart if you really want your baby to be of a particular sex, scientific research has shown that this is not an effective way of predicting your baby's gender.

## References

[1] E. Villamor, L. Dekker, T. Svensson, S. Cnattingius, Accuracy of the Chinese lunar calendar method to predict a baby's sex: a population-based study, Paediatr Perinat Epidemiol, 24(4), 398-400 (2010).

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