Kim started his career as a host on the weekly music show Show! Music Tank in 2005. He was a recurrent host of Inkigayo between 2005 and 2006, before becoming a regular host from 2007 until 2008. Kim was the host of the talk show Radio Star between 2010 and 2011, for which he won the Best Newcomer Award at the 11th MBC Entertainment Awards.[4] He became a radio DJ through the radio programs Young Street Radio (2005–2006), and later Kim Heechul's Youngstreet (2010–2011). In 2011, he enlisted in the military as a public service worker and hosted the Seongdong District's web radio program Space for a Rest – Visible Radio (2012–2013) as part of his service.[5]
Kim has acted in several music videos, including in TraxX's "Let You Go" and Sistar's "Shady Girl", both released in 2010; directed music videos including M&D's "Close Ur Mouth" (2011; his directorial debut), "I Wish" (2015), "Narcissus" (2016) and "Ulsanbawi" (2016); and wrote the screenplays to "Falling Blossoms" (2018), "Old Movie" (2019) and "White Winter" (2019).
^"Kim Hee-chul". Naver People Search (in Korean). Archived from the original on October 30, 2020. Retrieved June 13, 2018.
^"Kim Hee-chul". Daum (in Korean). Archived from the original on June 12, 2018. Retrieved June 13, 2018.
^함은정-김희철-정명옥-고영욱, MBC 방송연예대상 신인상 [Ham Eun-jung, Kim Hee-chul, Chung Myung-ok, Ko Young-wook, MBC Entertainment Awards Rookie of the Year Award]. Sports Chosun (in Korean). December 29, 2011. Archived from the original on November 8, 2018. Retrieved November 8, 2018.
^Yoo Ji-hoon (May 8, 2020). '백상예술대상' 2020년 최종 후보 공개…예측 불가 각축전 ['Baeksang Arts Awards' 2020 finalists released… Unpredictable competition]. Naver (in Korean). Archived from the original on May 10, 2020. Retrieved November 14, 2020.
^Lee Jung-hyun (December 22, 2016). [2016 JTBC 어워즈]김희철, 유재석 제치고 '예능최강자' 등극 [[2016 JTBC Awards] Kim Hee-chul beats Yoo Jae-suk in 'Best Entertainer']. Naver (in Korean). Archived from the original on October 30, 2020. Retrieved October 1, 2020.
^Lee Jung-hyun (December 22, 2016). [2016 JTBC 어워즈]민경훈♥김희철, 시청자가 뽑은 '최고의 커플' [[2016 JTBC Awards] Min Kyung-hoon ♥ Kim Hee-chul, 'Best Couple' selected by viewers]. Naver (in Korean). Archived from the original on October 30, 2020. Retrieved October 1, 2020.
^Lee Kwang-hyo (December 3, 2017). '2017 멜론뮤직어워드'방탄소년단ㆍ엑소,대상에 5관왕..아이유,'팔레트'로'올해의 앨범'상 ['2017 Melon Music Awards' BTS, Exo, 5 grand prizes won.. IU's 'Pallete' is album of the year]. AJU News (in Korean). Archived from the original on November 15, 2018. Retrieved November 15, 2018.
^Kim Na-ra (December 1, 2018). 방탄소년단, 대상 2개 포함 총 7관왕 기염…"시련이 밑거름됐다" [2018 멜론뮤직어워드](종합) [BTS who won 7 awards including 2 grand prizes said "our foundation is made up of hardships" [2018 Melon Music Awards] (Overall)]. Naver (in Korean). Archived from the original on October 30, 2020. Retrieved October 1, 2020.
^Choi Ji-yoon (December 28, 2019). [2019 SBS 연예대상]이상윤·양세찬·김희철·윤상현 우수상 [[2019 SBS Entertainment Awards] Lee Sang-yoon, Yang Se-chan, Kim Hee-chul and Yoon Sang-hyun Excellence Awards]. Newsis (in Korean). Archived from the original on June 16, 2020. Retrieved December 28, 2019.
^Kim Min-ji (December 20, 2020). [SBS 연예대상] 김희철·이상민·하하·장윤정, 최우수상 주인공 [[SBS Entertainment Awards] Kim Hee-chul, Lee Sang-min, Haha, Jang Yoon-jung, the top excellence award winners]. News1 (in Korean). Archived from the original on March 8, 2022. Retrieved December 20, 2020.