Your Korean birth chart, free

Saju (four pillars) reads the year, month, day and hour you were born. Enter your birth details to see your eight characters, your nature, your five elements and your 10-year luck cycles, with the reason behind every line.

What is Saju?

Saju (사주, “four pillars”) is the Korean name for the East Asian system also known as Four Pillars of Destiny, or BaZi in Chinese. Your birth year, month, day and hour each become a pillar of two characters: a heavenly stem on top and an earthly branch below. That makes eight characters in all, which is why Koreans also call it “the eight characters” (팔자, palja).

Each character belongs to one of five elements: Wood, Fire, Earth, Metal and Water. A Saju reading looks at how they balance and how they relate to the top character of your day pillar, called your day master, which stands for you.

Four pillars, four generations

In Korean tradition each pillar also stands for part of your family: the year pillar for your grandparents and roots, the month pillar for your parents, the day pillar for you and your partner, and the hour pillar for your children and later life. Our logo shows the same idea: four figures, with you in the middle.

How we calculate your chart

• Solar terms, not January 1

  The year starts at Ipchun (around February 4) and each month at a solar term, worked out to the minute.

• Your time zone and daylight saving

  Your birth city tells us the time zone and whether daylight saving time was in effect that day, including older rules.

• True solar time

  The day and hour pillars follow where the sun really was at your birthplace, so we adjust for your city's longitude.

• In your browser only

  Your chart is calculated on your device. We don't send your birth details to our servers or save them.

Questions

• What if I don't know my birth time?

  Check “I don't know my birth time”. We read the year, month and day pillars, which still cover most of the reading.

• Why do you ask for gender?

  Traditional Saju uses it only to decide whether your 10-year luck cycles move forward or backward. It doesn't change anything else.

• Is my zodiac animal the same as my year pillar?

  Yes. Your Korean zodiac animal is the branch of your year pillar. Saju simply adds the other three pillars.