Changbin is a South Korean rapper, songwriter, and producer who performs with Stray Kids and belongs to the group’s production trio, 3RACHA. Born on August 11, 1999, he is 27 years old as of September 15, 2026. His height is commonly reported as 167 cm, or approximately 5 feet 6 inches, although JYP Entertainment’s current profile does not confirm that measurement.
His age and height answer two familiar fan questions. His songwriting credits tell a broader story: Changbin helps create the music he performs. From the group’s debut material to his individual tracks, that creative involvement is central to understanding his place in Stray Kids.
Table of Contents
Changbin at a Glance
| Detail | Information |
|---|---|
| Stage name | Changbin |
| Full name | Seo Chang-bin |
| Birthday | August 11, 1999 |
| Age | 27 as of September 15, 2026 |
| Reported height | 167 cm, approximately 5 feet 6 inches; not confirmed on JYP’s current profile |
| Group | Stray Kids |
| Production unit | 3RACHA with Bang Chan and HAN |
| Agency | JYP Entertainment |
Changbin Age and Birthday
How old is Changbin? He is 27, having celebrated his birthday on August 11, 2026. Both JYP Entertainment’s official Stray Kids profile and Sony Music’s artist profile list his birth date as August 11, 1999.
This age uses completed years since birth. He will turn 28 on August 11, 2027. Dating the answer matters because older profiles may still show the age he was when they were published.
Changbin was 18 when Stray Kids released their debut album in March 2018. Looking at those dates gives a clear sense of how early his professional recording career began.
Changbin Height and How Tall He Is
Changbin’s height is listed as 167 cm on the entertainment profile site kpopping. That converts to about 5 feet 5.7 inches, usually rounded to 5 feet 6 inches.
The figure should be treated as a reported measurement. The current JYP profile provides his birthday but does not publish a height, so 167 cm should not be described as an officially verified statistic.
Footwear, posture and camera angles affect apparent height in photos, so comparisons with other members cannot verify the measurement.
Changbin in Stray Kids
Stray Kids’ current official lineup includes Bang Chan, Lee Know, Changbin, Hyunjin, HAN, Felix, Seungmin and I.N. Changbin contributes as a rapper and as one of the artists involved in writing the group’s songs.
The group introduced its work through the 2017 Stray Kids reality program before releasing the debut album I am NOT on March 26, 2018. JYP’s official I am NOT album page documents the release and identifies “District 9” as the title track.
Those early credits are revealing. Changbin is credited alongside Bang Chan and HAN for the lyrics to “District 9,” and alongside those members and Trippy for its composition. His creative role was already present at the beginning of the group’s official album career.
His Role in 3RACHA
3RACHA is the production trio comprising Bang Chan, Changbin and HAN. In its interview with Stray Kids about GO LIVE, Teen Vogue explored how the members draw on their experiences when writing music and work together in the studio.
For someone discovering Stray Kids’ Changbin through a performance clip, these credits offer another way into his work. They show involvement in the construction of songs as well as their delivery. Lyrics, composition and arrangement are separate contributions, and the credits for individual tracks help clarify who did what.
Songs That Show His Creative Involvement
The official SKZ-REPLAY release page brings several parts of Changbin’s work together. Released on December 21, 2022, the album includes individual songs and material previously shared through the group’s SKZ-RECORD and SKZ-PLAYER content.
DOODLE
“DOODLE” is Changbin’s solo track on SKZ-REPLAY. JYP credits him with the lyrics and credits Changbin and Millionboy with the composition. The arrangement is credited to Millionboy and Bang Chan. In his accompanying comments, Changbin describes expressing a wish to follow his own path through distinctive sounds and flows.
Streetlight
“Streetlight” is billed as a Changbin track featuring Bang Chan and appears on the album’s B-side section.
District 9
“District 9” connects back to the group’s debut. Comparing its shared writing credits with those of “DOODLE” shows how Changbin’s work spans both group releases and individual material.
Frequently Asked Questions
What is Changbin’s real name?
His full name is Seo Chang-bin. He performs under the name Changbin.
How old is Changbin in 2026?
He turned 27 on August 11, 2026. Before that birthday, he was 26.
How tall is Changbin?
His height is commonly reported as 167 cm, approximately 5 feet 6 inches. JYP’s current official profile does not confirm the measurement.
Is Changbin part of 3RACHA?
Yes. He forms the production trio with fellow Stray Kids members Bang Chan and HAN.
Does Changbin write songs?
Yes. Official credits identify his lyrical and compositional contributions to songs including “District 9” and “DOODLE.”
Changbin’s recording credits give fans plenty to explore beyond his age and appearance. They reveal how closely his work as a performer connects with his work as a writer. For more profiles of musicians, actors and public figures, explore Elivestory’s celebrity biographies and life stories.
Sources and Editorial Notes
Elivestory aims to use relevant sources, separate confirmed information from speculation and update important details when reliable new information becomes available.
Jaylin Khan
Jaylin Khan is an entertainment writer at elivestory.com who covers celebrity biographies, entertainment news, digital media and the latest pop culture trends. Drawing information from credible and trusted sources, she combines verified facts with thoughtful opinions to create engaging and informative articles for readers.
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