Kim Hee-chul dilahirkan di Hoengseong, Wilayah Gangwon, pada 10 Julai 1983. Beliau mempunyai seorang kakak, Kim Heejin.

Pendidikan

• 1996: 서울신우초등학교
• 1999: Jinkwang Middle School
• 2002: Wonju Technical High School
• 2004: 상지영서대학교 (Tourism English Interpretation)
• 2009: Sangji University (Computer Data Informatics Department)
• 2011: Chungwoon University (Industry MBA)