The Chinese birth calendar is a traditional method that matches the mother's age at conception with the month of conception in a chart to predict whether the baby will be a boy or a girl. Legend says it was used in the Chinese imperial court centuries ago, and today it's still one of the most popular fun predictions among expecting parents. This predictor shows the chart result for mothers aged 18 to 45.
The Chinese calendar has no scientific basis. Studies show it's right about 50% of the time, no better than a coin toss. Enjoy the result as something to talk about, and wait for your ultrasound before choosing the nursery colours, clothes or a name.
What you can do
- Pick mum's age and the month of conception to see the Chinese calendar's boy or girl prediction.
- If you're signed in, your age and due date from your profile fill in the fields.
- Share the result with your partner, family or friends in one tap.
- Browse the full Chinese gender chart for ages 18-45 and all 12 months.
How to use it
- Pick your age at the time you conceived.
- Pick the month you conceived. If you don't know it, count back about 9 months from your due date.
- Tap See prediction to get the Chinese calendar's answer.
Frequently asked questions
Is the Chinese gender calendar accurate?
It isn't scientifically proven. Studies found the Chinese calendar is right about 50% of the time, the same as a random guess. Use it for fun and wait for an ultrasound or the tests your doctor recommends to find out the sex.
Which age does the Chinese calendar use?
The traditional chart uses the mother's age on the Chinese lunar calendar, which is often one year more than her actual age. HeyMom uses your actual age at conception, as in the app. If you're curious, try one year older too and compare the two results.
How do I find my month of conception?
Conception usually happens about two weeks after the first day of your last period. If you know your due date, counting back 266 days, roughly 9 months, gives you the month of conception. If you're signed in, this is worked out from the date in your profile.
How can I find out my baby's sex for sure?
The sex can usually be seen on an ultrasound between 16 and 20 weeks. Blood tests such as NIPT can show the sex chromosomes from 10 weeks, and amniocentesis or CVS are definitive tests done for medical reasons.