KFANZIP™What is Korean Saju (사주)? Read your Four Pillars in 3 minutes
· KFANZIP
Saju (사주, literally “four pillars”) is the Korean way of reading a person from the moment they were born. Your birth year, month, day and hour each become a pair of characters, and those eight characters are read as a map of your temperament, your strengths and the timing of your life.
In Korea this is not a niche hobby: people check their saju before a new year, a new job or a wedding, and saju cafés are easy to find in Seoul. This guide explains the basics in plain words, so you can read your own chart in about three minutes.
Birthday only. No sign-up needed to start.
What is Saju, exactly?
Saju is built on the East Asian calendar of ten Heavenly Stems (甲 乙 丙 丁 戊 己 庚 辛 壬 癸) and twelve Earthly Branches (子 丑 寅 卯 辰 巳 午 未 申 酉 戌 亥). Every year, month, day and two-hour block has one stem and one branch, so any moment can be written as a set of characters.
Koreans also call it myeongri (명리, “the logic of fate”). A good reading does not announce fixed events. It describes your natural tendencies and the kind of energy each period brings, and leaves the choices to you.
What are the Four Pillars?
Your chart has four columns: the year pillar (roots and family background), the month pillar (environment and working life), the day pillar (you and your closest relationships) and the hour pillar (inner wishes and later years). Each pillar has a stem on top and a branch below, which makes eight characters in total. That is why Chinese speakers call it BaZi, “eight characters”, and Koreans say saju palja (사주팔자).
How do the Five Elements work?
Every character belongs to one of five elements: wood (木), fire (火), earth (土), metal (金) and water (水). They feed each other in a cycle (wood feeds fire, fire makes earth, earth bears metal, metal carries water, water grows wood) and they also keep each other in check.
A reading starts by counting them. The example chart above has three water, two wood, two metal, one fire and no earth. A chart that leans toward one element is not “bad”; it simply explains why some things come easily to you and others take effort.
The element that brings your chart back into balance is called yongsin (용신, “the useful element”). It is behind many practical tips in a reading, such as lucky colours or the kind of work and people that suit you.
Why is the Day Pillar “the pillar that is you”?
The stem of your day pillar is your Day Master (일간). Every other character is read in relation to it, so it works like your core identity. In the example, the Day Master is 甲, big-tree wood: upright, growth-minded and a natural starter.
Stems and branches pair up in a fixed cycle, so there are exactly 60 day pillars, from 甲子 to 癸亥. Your day pillar (일주, iljoo) is the closest thing saju has to a personality type, and it is usually the first thing Koreans compare when they talk about saju.
Is Saju the same as the Chinese zodiac?
No. Your zodiac animal (띠, tti) is only the branch of your year pillar, one character out of eight. Two people born in the same year share an animal but can have very different charts.
The start of the year differs too. Saju changes the year at Ipchun (입춘, the start of spring, around February 4), not on January 1. In everyday talk about 띠, many Koreans switch at Seollal, the Lunar New Year. So if you were born in January or early February, your saju year may be the previous one.
Which K-pop stars share my Day Pillar?
With only 60 day pillars, you share yours with many people, idols included. After your reading, KFANZIP shows K-pop stars born on the same day pillar as you, worked out from their public birthdays. It is a fun way to see whose temperament mirrors yours, and an easy conversation starter in fan chats.
How does KFANZIP read your Saju?
KFANZIP calculates your chart with traditional rules: solar terms for the months, the 60-day cycle for days and hours, element balance and 10-year luck cycles (대운). The reading is assembled from those rules, not written by AI, so the same birthday always gives the same result.
Your birthday is stored only on your own device. The reading is free and available in Korean, English, Japanese, Simplified Chinese and Traditional Chinese.
Frequently asked questions
Is K-Saju free?
Yes. The full reading, including today's fortune, your year ahead, love, career and money, and 10-year luck cycles, is free.
Do I need my birth hour?
No. Without it, the hour pillar is skipped and the reading uses the other three pillars (six characters). Your Day Master and day pillar stay the same, so most of the reading is still useful.
Is the reading AI-generated?
No. It is calculated with traditional saju rules, so the same birthday always gives the same chart and the same reading.
Is my birthday stored?
Only on your own device, so you can come back to your reading without typing it again.
Is K-Saju the same as Chinese BaZi or Japanese Shichu Suimei (四柱推命)?
They share the same root: the stems, branches and five elements. K-Saju follows the Korean reading style, with Korean ideas such as iljoo (day pillar) and yongsin (useful element) and the way Korean saju readers explain a chart.
Birthday only. No sign-up needed to start.
K-Saju Lounge Talk about your chart with fans from around the world.