Many parents are surprised to learn that the Chinese Gender Chart doesn't use your regular age. Instead, it uses your Chinese lunar age, which may be one or even two years different depending on your birth date and Chinese New Year. This guide explains exactly how lunar age works and how to calculate it correctly.
Clear educational guidance for parents navigating traditional lunar age counting.
Chinese lunar age is the traditional Chinese way of counting age. Unlike Western age, babies are considered one year old at birth to count time in the womb, and age increases on Chinese New Year rather than on individual birthdays. This means your lunar age is usually 1 to 2 years higher than your Western age.
Enter your birth date and conception date to calculate your exact lunar age.
Enter your dates to get your Chinese lunar age only — no gender prediction on this page.
Your Chinese Lunar Age at Conception
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Conception Lunar Month: --
→ Now get your gender prediction on the homepage| Year | Chinese New Year Date | Zodiac Sign |
|---|---|---|
| 2022 | February 1, 2022 | Tiger 🐅 |
| 2023 | January 22, 2023 | Rabbit 🐇 |
| 2024 | February 10, 2024 | Dragon 🐉 |
| 2025 | January 29, 2025 | Snake 🐍 |
| 2026 | February 17, 2026 | Horse 🐴 |
| 2027 | February 6, 2027 | Goat 🐐 |
| 2028 | January 26, 2028 | Monkey 🐒 |
| 2029 | February 13, 2029 | Rooster 🐓 |
| 2030 | February 3, 2030 | Dog 🐕 |
In Western culture, age begins at 0 at birth and increases by 1 on each birthday. In traditional Chinese culture, a baby is considered 1 year old at birth to count time spent in the womb, and age increases on Chinese New Year rather than on individual birthdays.
You gain your first year at birth. If your birthday falls before Chinese New Year in your birth year, you also crossed a lunar year boundary immediately, adding a second year relative to your Western age.
Lunar age increases for everyone on Chinese New Year (the Spring Festival), which falls on a different date between January 21 and February 20 each year.
Yes. Subtract your birth year from your conception year, add 1 for birth in womb, and add 1 more if you were born before Chinese New Year in your birth year.
Differences happen because some calculators use simplified mathematical formulas while others use exact astronomical lunar tables and timezone boundaries.
Modern legal records in Asian countries use standard Gregorian age. Chinese lunar age remains a traditional cultural system used for gender charts, astrology, and traditional family milestones.
Essential resources for understanding and using the traditional Chinese lunar gender prediction system accurately.
Full interactive lunar calendar with year-of-birth rows and lunar month columns for 2026–2027 conceptions.
Step-by-step explanation of the +1 gestational year rule and Chinese New Year offset corrections.
Egg retrieval date vs. transfer date — which date to use when applying the chart after IVF.
~50% predictive accuracy confirmed across 38 years of Canadian birth records. Full peer-reviewed study review.
Side-by-side comparison of the Chinese lunar chart and placenta-side Ramzi gender prediction method.
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