Baby Gender Calendar Predictor
Use this calendar to explore how the gender formula might work for your future child planning. Just enter the birthdays of both parents and we'll generate a 5-year conception calendar showing predictions for each month.
If you're curious how accurate this method might be, you can also test it here using conception dates of your own children, relatives, or friends. Who knows — maybe we're on to something, or maybe it's just a glorified coin toss!
- The months shown are based on conception, not birth dates.
- If the formula can't determine the gender, you'll see “N/A”.
Frequently Asked Questions
What does the calendar predictor show me?
A 5-year grid of conception months, with each month marked as a likely boy, likely girl, or inconclusive based on the folk formula. It applies the same math as the main predictor, but across many future months at once.
Should I plan my pregnancy around this calendar?
Not really. The method is unproven. Treat the calendar as something fun to explore, not as medical or family-planning advice. If timing matters for real reasons, talk to an OB-GYN or fertility specialist.
What is a conception month on the calendar?
It’s the month the baby would be conceived, not born. A baby conceived in March is typically born around December the same year.
Why does the calendar change when I change a birthday?
The folk formula uses both parents’ birth months as inputs. Changing either input shifts the entire calendar, which is expected behavior.
Why are some months marked N/A?
When the formula can’t produce a clear boy or girl result, we mark it N/A rather than guess. That’s intentional and shows the method isn’t always decisive.
Can I print or save the calendar?
There’s no built-in print or save function. Your browser’s print feature (Ctrl+P on Windows, Cmd+P on Mac) usually works, or you can take a screenshot.
How is this different from the Chinese Gender Predictor?
Different folk traditions, different formulas. The Chinese chart uses only the mother’s age and the conception month. Our calendar predictor uses both parents’ birthdays and the conception month. Try both for fun and compare.