How to Use the Chinese Gender Calendar

A complete guide to using the traditional Chinese Gender Calendar for baby gender prediction.

1

Understand Lunar Age

The Chinese Gender Calendar uses lunar age, not your Western age. Lunar age is calculated differently:

  • You are considered 1 year old at birth (counting time in the womb)
  • Your age increases by one year at each Chinese New Year, not on your birthday
  • This means your lunar age is typically 1-2 years older than your Western age

Tip: Our calculator automatically converts your birth date to lunar age, so you don't need to calculate this yourself.

2

Determine Your Conception Date

You need to know when conception occurred. You can use one of these options:

Option A: Exact Conception Date

If you know the exact date of conception (or have a good estimate), use this date directly.

Option B: Last Menstrual Period (LMP)

If you know the first day of your last menstrual period, select "LMP" in our calculator. We'll add 14 days to estimate conception.

Option C: IVF / Embryo Transfer

For IVF pregnancies, use your embryo transfer date as the conception date.

3

Convert to Lunar Month

The Chinese calendar uses lunar months (1-12) that don't align with Western months. Each lunar month begins with the new moon and can start on different Western dates each year.

Tip: Our calculator automatically determines which lunar month your conception date falls in, accounting for the specific lunar calendar of that year.

4

Find Your Prediction on the Chart

The Chinese Gender Calendar is a grid where:

  • Rows represent the mother's lunar age (18-45)
  • Columns represent the lunar month of conception (1-12)
  • Each cell shows either Boy or Girl

Find the intersection of your lunar age row and conception month column to see the prediction.

Example Calculation

Let's say the mother was born on March 15, 1995 and conception occurred on June 10, 2026.

  1. Calculate lunar age: At June 2026, her Western age is 31. Her lunar age would be 32 (since she was born before Chinese New Year 1995).
  2. Find lunar month: June 10, 2026 falls in lunar month 5 (based on the 2026 lunar calendar).
  3. Look up the chart: Lunar age 32, lunar month 5 = prediction is displayed.

Our calculator does all of this automatically when you enter the dates!

Important Things to Know

  • ⚠The Chinese Gender Calendar has no scientific basis and is about 50% accurate (same as random chance).
  • ⚠A baby's biological sex is determined by genetics (XX or XY chromosomes), not by the mother's age or conception timing.
  • ⚠Use this for entertainment and cultural interest only, never for important decisions.
  • ⚠For accurate gender determination, consult medical professionals (ultrasound, NIPT, amniocentesis).

Ready to try the Chinese Gender Calendar?

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