Bias Match K-pop bias compatibility by birth chart

The Bias Match tiger sage: a tiger in a black gat, seated on a cushion with a bamboo fan, one finger raised.
“Your birth chart has secrets. Let me read them.”
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Free match · No sign-up · Your birthday is never stored

Your chart. Their chart. One honest number.

Saju is Korea's birth-chart system: four pillars from the day and hour you were born. We read your pillars next to theirs, add your sun and moon, and give you one honest number.

How it works ↓

Step 1 / 4

You

Birth date
Birth time

Three steps

How it works

  1. 1 Your birthday Enter your birth date. Hour is optional.
  2. 2 Your bias Pick a group and your member.
  3. 3 Your match A score, two lines on the chemistry, three facts and a card to post.

Before you start

What you read

This is a chart. Four pillars, each a stem over a branch.

Year Month Day Hour 火 丁 Jeong 土 丑 Chuk 土 戊 Mu 金 申 Sin 火 丙 Byeong 火 午 O Day master ? ? unknown
Example chart
PillarStemBranch
Year丁 Jeong (Fire)丑 Chuk (Earth)
Month戊 Mu (Earth)申 Sin (Metal)
Day丙 Byeong (Fire)午 O (Fire)
Hourunknownunknown

The day pillar is your day master: the one character a reading leans on. Without a birth hour the fourth pillar stays empty, and every result says so.

The result

What you get

  • Your match with the member you pick
  • A 0–100 match energy with the reasons
  • A story card in the group's color
  • The group's full ranking, free
  • Your 8-chapter written report ($9.99, optional)
Example story card: YOU and YOUR BIAS side by side, a match score of 81 in a ring, two lines about the chemistry, both day masters in their element colours, sun, moon and rising signs, and a five-element comparison. Type only, no photos.
STORY CARD · 1080 × 1920 Your chart and theirs, side by side.

Fine print

Questions

Is this official?

No. Fan-made, not affiliated with any artist or agency. For entertainment only.

Do you store my birthday?

No. It is used for the calculation and dropped. Your share card is drawn from the finished result, which stays in memory for an hour — never the date itself. See the policy for what is kept.

What if I don't know my birth hour?

We use three pillars instead of four, and the result says so.

Is this real astrology?

It is real saju and Western math, read for fun, not for decisions.