Free BaZi Calculator (Four Pillars)
Enter your birth details to get your Four Pillars (八字), your Day Master, and your five-element balance — computed instantly, no sign-up.
What this calculator gives you
BaZi — the Chinese "Four Pillars of Destiny" — turns your birth date and time into four pillars (year, month, day, hour), each a pairing of one of the five elements. This free calculator computes:
- Your Four Pillars (the eight characters, 八字).
- Your Day Master — the element that represents you.
- Whether your Day Master is strong or weak (your operating manual).
- Your favourable elements — what nourishes vs drains you.
- Your five-element balance at a glance.
What is a Day Master?
The Day Master is the single most important thing in your chart — the element that represents you, that everything else is read in relation to. A weak Day Master isn't bad; it means you run best when supported. A strong one runs best with an outlet. Read more about the Day Master →
Why your birth time matters
Your time of birth sets the hour pillar — a full quarter of your chart — and is read in true solar time. Without it, the other three pillars are still accurate; the hour pillar is simply estimated. More on birth time →
Beyond the Four Pillars
BaZi is one of four systems. Fortune Synthesis reads your Four Pillars together with your Western astrology chart, your Zi Wei Dou Shu palaces, and your numerology — and weaves them into one integrated reading. Get your full free reading →
For reflection and entertainment; not professional, medical, legal, or financial advice.