Step-by-step examples in using the ancient Chinese Birth Gender Chart

This page tells you how to find out the correct lunar age and lunar month when the mother is conceived, manually. For faster way of using the gender chart on gender prediction, use this fully automated tool. For gender selection, use this.

Steps for finding the lunar age of mothers

Step 1. – Subtract the mother’s ‘birth year’ from the ‘conception year’, get the result.
Step 2. – Find out if the mother’s birth date was before or after the lunar new year in that year?
Step 3. – Find out if the conception date is before or after the lunar new year in that year?
Step 4. – Check the following table and add the ‘additional age’ to the result of step 1.

Table for additional age

Table for additional age

Example 1 : What was the gender of the baby if the mother born on May 18, 1974 and she conceived on October 23, 2000.

Steps :

a. Age of the mother on conception was 27
Step 1. 2000 – 1974 = 26
Step 2. Look at the 1974 calendar conversion table, May 18 was a date after the lunar new year (on Jan. 23, 1974)
Step 3. Look at the 2000 calendar conversion table, Oct. 23 was a date after the lunar new year (on Feb. 5, 2000)
Step 4. Check for the additional age table above, and we find that one more year (Area D) needed to be added to the result of step 1. So, 26 + 1 = 27

b. The conception month of the mother was on the 9th lunar month
Open the 2000 calendar conversion table and you can find out that the lunar date was 26th of the 9th lunar month.

c. It is a baby boy
Open the chart and we know that mother age 27 with the 9th lunar month would get a baby boy.

Example 2 : What is the gender of the baby if the mother born on Jan. 3, 1980 and she was conceived on July 18, 2007.

Steps :

a. Age of the mother on conception was 27
Step 1. 2007 – 1980 = 27
Step 2. Look at the 1980 calendar conversion table, Jan 3 was a date after the lunar new year (on Feb. 16, 1980)
Step 3. Look at the 2007 calendar conversion table, July 18 was a date after the lunar new year (on Feb. 18, 2007)
Step 4. Check for the additional age table above, and we find that one more year (Area C) needed to be added to the result of step 1. So, 27 + 2 = 29

b. The conception month of the mother was on the 9th lunar month
Open the 2007 calendar conversion table and you can find out that the lunar date was 26th of the 9th lunar month.

c. It is a baby boy
Open the chart and we know that mother age 27 with the 9th lunar month would get a baby boy.

Example 3 : What is the gender of the baby if the mother born on July 10, 2000 and she will conceive on Jan. 10, 2025.

Steps :

a. Age of the mother on conception was 27
Step 1. 2025 – 2000 = 25
Step 2. Look at the 2000 calendar conversion table, July 10 was a date after the lunar new year (on Feb. 5, 2000)
Step 3. Look at the 2025 calendar conversion table, Jan. 10 was a date after the lunar new year (on Jan. 29, 2025)
Step 4. Check for the additional age table above, and we find that one more year (Area B) needed to be added to the result of step 1. So, 25 + 0 = 25

b. The conception month of the mother was on the 9th lunar month
Open the 2025 calendar conversion table and you can find out that the lunar date was 11th of the 12th lunar month (this is actually the last month of the previous lunar year, but it doesn’t affect our end result, as it is already adjusted by using the ‘additional age table).

c. It is a baby boy
Open the chart and we know that mother age 25 with the 12th lunar month would get a baby boy.