Free saju calculator: your four pillars chart
Saju is the Korean name for the Four Pillars of Destiny, called bazi in Chinese. Enter your birth date and time, and your eight characters, day master and five elements are worked out right on this device.
How the saju card works
Saju (사주, literally “four pillars”) is the Korean way of reading a birth chart, known in Chinese as bazi. Your birth year, month, day and hour each become a pair of characters, a top one (heavenly stem) and a bottom one. That makes eight characters in all.
Each character carries one of the five elements (wood, fire, earth, metal, water) and a yin or yang side. The card shows your core element, the one that stands for you (day master), how the five elements are spread across your chart, and your zodiac animal (Chinese/Korean zodiac). It adjusts for your birth city’s time zone and local solar time, and the math runs on your device.
Think of it as a mirror, not a forecast. Saju describes tendencies and timing worth thinking about. It doesn’t make decisions for you. For fun and self-reflection.
Saju card FAQ
Is saju the same as Chinese bazi?
The calendar math is the same: eight characters from your birth year, month, day and hour, read through the five elements. Korean saju has its own reading habits and wording, and the Moon Rabbit reads in the Korean style.
Do I need my exact birth time?
It helps, but you can skip it. Without a time, the card leaves out the two hour characters and reads the other six. Born between 11 pm and 1 am? Check the day setting under More options.
Is my birth date sent anywhere?
The card is calculated on this device. If you don’t sign in, your birth details stay here. If you sign in, they’re stored encrypted in your account.
What is my day master?
It’s the top character of the day you were born, the one that stands for you in the chart. There are ten: a yang and a yin version of wood, fire, earth, metal and water. Your saju card shows yours with a short description.
What’s free, and what costs Tteok?
The saju card, the daily fortune, the tteok test and the zodiac compatibility pages are free. Longer written readings, like the life reading or a two-person compatibility reading, open with Tteok, the site’s credits, and each one shows a free preview first.