Chinese Gender Predictor
Boy or girl? Try the traditional Chinese birth chart — with proper lunar calendar conversion, not the usual shortcut.
This is a bit of fun, not a prediction. The chart is about as accurate as a coin toss. Your baby's sex was decided by chromosomes at the moment of fertilisation — nothing about your age or the month can change or reveal it. For a real answer, you'll need your 20-week scan or a NIPT blood test.
Used to work out your lunar age at conception
Roughly when you got pregnant. An approximate date is fine.
The ancient chart predicts...
It's a Boy!
According to the chart, a blue bundle of joy is in your future.
It's a Girl!
According to the chart, a pink bundle of joy is in your future.
How we got there
- Conception date used
- —
- Your lunar age then
- —
- Lunar conception month
- —
How accurate is this?
About 50/50 — a coin toss. Legend says the chart was found in a royal tomb and is 90% accurate, but every proper look at it lands on chance. That's not surprising: your baby's sex was set by chromosomes at fertilisation. It's a lovely bit of tradition and a fun thing to argue about at a baby shower, but for a real answer you'll want your 20-week scan or a NIPT blood test.
Why do other sites give a different answer?
Because most of them cut a corner. The chart is indexed by lunar age and lunar conception month — but plenty of tools just feed in your Western age and the Gregorian month you picked from a dropdown. That lands you on the wrong row and the wrong column.
- Lunar age counts you as 1 at birth, and everyone gains a year at Chinese New Year rather than on their birthday — so it runs 1 to 2 years ahead of your Western age.
- Lunar months don't line up with January to December. Lunar month 1 starts at Chinese New Year, which drifts between late January and mid-February.
- Age at conception is what the chart wants — not your age today.
This tool converts both of your dates to the real Chinese lunar calendar and shows you the lunar age and lunar month it used, so you can check its working. There are also several transcribed versions of the chart floating about online that disagree on a handful of cells — ours matches the most widely published one.
When can I actually find out?
On the NHS, the 20-week screening scan (the "anomaly scan") is usually the point at which sonographers can tell you, if you ask and if baby is lying helpfully. Some hospitals don't share it as policy, so check locally. NIPT — a blood test — can indicate sex from around 10 weeks, and is available privately or on the NHS in some circumstances. Private gender scans are also widely available from around 16 weeks.