Free BaZi Calculator

Generate your Four Pillars chart and find your Day Master.

Birth details Date of birth

Your birth date as recorded locally at your birthplace.

Time of birth (local clock time)

The clock time at your birthplace when you were born.

I don’t know my birth time

Time correction settings UTC offset at birth

Use the UTC offset at your birthplace on your birth date, including daylight saving where applicable.

Need help?

Use the offset that applied at your birthplace on your birth date.
Not the offset where you live now.
If you are not sure, check a historical time-zone source — don’t guess.

Longitude (optional, for true solar time)

Leave empty to skip the solar-time correction. East is positive, west is negative.

Your Personal BaZi Reading

Explore a personal written reading of your chart.

12–15 page PDF delivered to your email
Day Master and core personality
Key life themes and 3–4 timing windows in the year ahead

Explore My Personal Reading — €49 View a sample reading

Also available: Compatibility — €59 · Complete Year Bundle — €79

Common questions

Can I use this without a birth time?

Yes. You’ll see the year and month pillars, and the day pillar when it can be pinned to a single day. The hour pillar can’t be determined, and the Day Master is shown only when the day is certain.

Which UTC offset should I use?

The offset that applied at your birthplace on your birth date, including daylight saving if it was in effect then.

Are my birth details saved?

No. The calculation runs in your browser. Your details are not stored, not put in the URL, and not sent to analytics.

What will I receive with a personal reading?

A written PDF reading delivered by email within 24 hours of payment — see the reading page for the full scope. Jade Natal Reading →

Can I see a sample before ordering?

Yes — view a sample reading to see the format and depth. View a sample reading →

Method & limitations

Day pillar convention: 23:00 starts the next day’s day pillar (early and late 子时 are distinguished).
Solar terms come from a precomputed table covering 1899–2101.
True solar time is applied only when you enter a longitude.
If your birth time is unknown, the hour pillar is not determined and hour-dependent statements are left out.
This free chart shows the Four Pillars only. It is not a reading or a prediction.