| Cover | Feb. 28, 2023 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Feb. 28, 2023 |
| Entity File Number | 001-39983 |
| Entity Registrant Name | Kernel Group Holdings, Inc. |
| Entity Central Index Key | 0001832950 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 515 Madison Avenue |
| Entity Address, Address Line Two | 8th Floor – Suite 8078 |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10022 |
| City Area Code | (646) |
| Local Phone Number | 908-2659 |
| Written Communications | true |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
| Units, each consisting of one Class A Ordinary Share $0.0001 par value, and one-half of one redeemable warrant | |
| Title of 12(b) Security | Units, each consisting of one Class A Ordinary Share $0.0001 par value, and one-half of one redeemable warrant |
| Trading Symbol | KRNLU |
| Security Exchange Name | NASDAQ |
| Class A Ordinary Shares included as part of the unit | |
| Title of 12(b) Security | Class A Ordinary Shares included as part of the unit |
| Trading Symbol | KRNL |
| Security Exchange Name | NASDAQ |
| Warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 | |
| Title of 12(b) Security | Warrants included as part of the units, each whole warrant exercisable for one Class A Ordinary Share at an exercise price of $11.50 |
| Trading Symbol | KRNLW |
| Security Exchange Name | NASDAQ |
