| Cover | Dec. 16, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Dec. 16, 2024 |
| Current Fiscal Year End Date | --06-30 |
| Entity File Number | 001-41155 |
| Entity Registrant Name | Kairous Acquisition Corp. Limited |
| Entity Central Index Key | 0001865468 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | Level 39 Marina Bay Financial Centre Tower 2 |
| Entity Address, Address Line Two | 10 Marina Boulevard |
| Entity Address, City or Town | City Singapore 018983 |
| Entity Address, Country | SG |
| Entity Address, Postal Zip Code | 018983 |
| City Area Code | +662 |
| Local Phone Number | 255-6851340 |
| Written Communications | false |
| 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 ordinary share, $0.0001 par value, one-half (1/2) of one redeemable warrant and one right entitling the holder to receive one-tenth of one ordinary share | |
| Title of 12(b) Security | Units, each consisting of one ordinary share, $0.0001 par value, one-half (1/2) of one |
| Trading Symbol | KACLU |
| Security Exchange Name | NASDAQ |
| Ordinary shares, par value $0.0001 per share | |
| Title of 12(b) Security | Ordinary shares, par value $0.0001 per share |
| Trading Symbol | KACL |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each exercisable for one ordinary share at an exercise price of $11.50 included as part of the units | |
| Title of 12(b) Security | Redeemable warrants, each exercisable for one ordinary share at an exercise price of $11.50 included as part of the units |
| Trading Symbol | KACLW |
| Security Exchange Name | NASDAQ |
| Rights, each to receive one-tenth of one ordinary share | |
| Title of 12(b) Security | Rights, each to receive one-tenth of one ordinary share |
| Trading Symbol | KACLR |
| Security Exchange Name | NASDAQ |
