Saju (사주) is Korea's tradition of the Four Pillars of Destiny. Enter your birth date and we'll cast your chart — with each solar-term boundary computed from the Sun's position, the way Korean masters do it.
Pick the time zone of your birthplace, including daylight saving if it was in effect.
Only the ten-year luck pillars depend on this — they run in opposite directions for women and men.
A simplified useful god (용신) read from Day Master strength — the same rule the Korean app uses for its lucky colors. How readers choose the useful god →
Nine named stars a Korean reader checks after the Ten Gods — found from your Day Master, your year and day branches, and your day pillar. All the special stars, explained →
Ages are international age, by calendar year. The bar is a reference index of how well each pillar’s elements suit your chart’s strength — not a verdict. How luck pillars are counted →
Your birth-year animal is one pillar of four. Find your animal sign with the real Lunar New Year boundary, see how the twelve signs match, and read what the Year of the Fire Goat brings each sign in 2027. More calendar pages: the Korean age calculator, the lunar birthday calculator, the lunar age calculator, the Chinese gender calendar for 2027, Lunar New Year 2027 dates, the Chinese calendar for 2027 and the 24 solar terms that set every pillar.
All 24 articles · The ten Day Masters · Which Day Master are you? — quiz · 60 Day Pillars · Day Master compatibility · Monthly horoscope · Day pillar calendar · BaZi calculator
Saju (사주, "four pillars") converts your birth year, month, day and hour into eight Chinese characters — your palja (팔자). It shares its roots with Chinese BaZi, but Korean Saju grew into its own school: a strong focus on the Day Master as the self, everyday practical use, and precise calendar corrections. The year doesn't change on January 1st or Lunar New Year, but at Ipchun (the "Start of Spring" solar term) — and this calculator computes those term boundaries from the Sun's position.
Everything runs in your browser. Your birth data is never sent to a server.
Six of your eight characters — including your Day Master, element balance and most Ten Gods — come from the date alone. Only the Hour Pillar is left out, so a date-only reading is still solid.
The pillars are anchored to astronomical solar terms, which happen at one absolute moment worldwide. Your local birth time plus its UTC offset tells us where that moment fell in your chart.
Korean. The engine follows the Korean saju convention: solar-term month boundaries, Ipchun year boundary, and the late-night hour rule (야자시).