Saju (사주, 四柱) is Korean astrology based on the Four Pillars of Destiny - your birth year, month, day, and hour. It uses the Five Elements (Wood, Fire, Earth, Metal, Water) and 12 animal signs to analyze personality and compatibility. IdolSaju offers a free Saju calculator.

IdolSaju is a FREE K-Pop idol compatibility calculator using authentic Korean Saju (사주) astrology to calculate your cosmic connection with over 350 K-Pop idols including BTS, Stray Kids, SEVENTEEN, NewJeans, aespa, and more.

How does Korean Saju astrology work?

Saju (사주) is based on the Four Pillars of Destiny: Year, Month, Day, and Hour. Each pillar contains a Heavenly Stem and Earthly Branch, creating a unique cosmic profile for compatibility analysis.

Which K-Pop groups are available?

IdolSaju features 350+ idols: NewJeans, aespa, IVE, LE SSERAFIM, RIIZE, BOYNEXTDOOR, TWS, ILLIT, Stray Kids, ENHYPEN, TXT, BTS, BLACKPINK, SEVENTEEN, TWICE, and many more.

Yes! Free tier shows your top matches. Pro (€4.99/month) includes detailed analysis and daily horoscopes.

How is Saju different from Bazi?

Saju and Bazi (八字) are the same Four Pillars astrology system. Saju is the Korean term, Bazi is Chinese. Both calculate destiny from birth date and time using Heavenly Stems and Earthly Branches.

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