BaZi Calculator

Month boundaries come from the Sun's actual ecliptic longitude, and the clock from historical timezone rules — Soviet decree time and DST changes included. Every intermediate value is visible in the “How this was computed” panel.

Chart name or label — optional

Date of birthValidated date range: 1900–2100

Time of birthTime unknown — three-pillar chart

Place of birth

Gender — sets the direction of the luck pillars

Fill in the date, time (or mark it unknown), place and gender

How this was computedwaiting for data

Time zone—

Longitude correction—

Equation of time—

True solar time—

These update before the chart is built, so you can see which zone and which correction were applied.

Example chart24.08.1991 · 17:30 · Kyiv

Hour

丙BǐngFire YangFellowship申ShēnMetal YangIndirect Wealth

Hidden stems

庚Indirect Wealth

壬Extreme Authority

戊Spirit of Delight

Day

丙BǐngFire YangPersonality Element寅YínWood YangIndirect Resource

Hidden stems

甲Indirect Resource

丙Fellowship

戊Spirit of Delight

Month

丙BǐngFire YangFellowship申ShēnMetal YangIndirect Wealth

Hidden stems

庚Indirect Wealth

壬Extreme Authority

戊Spirit of Delight

Year

辛XīnMetal YinDirect Wealth未WèiEarth YinChallenge to Authority

Hidden stems

己Challenge to Authority

丁Wealth Robber

乙Direct Resource

The lower block of each pillar holds the hidden stems with their deity; a sign's colour repeats the element named in the legend.

WoodFireEarthMetalWater

Day Master 丙 — yang Fire

Privacy

Your date and time of birth never leave your device: everything is computed in the browser. The settlement index is downloaded to you and searched locally. If you open the Map tab, tiles are fetched from OpenStreetMap — that reveals only the area you are looking at, never your birth data.