| Document And Entity Information | 3 Months Ended |
| Mar. 31, 2022 | |
| Document Information Line Items | |
| Entity Registrant Name | SAI.TECH GLOBAL CORPORATION |
| Document Type | F-1/A |
| Amendment Flag | true |
| Amendment Description | AMENDMENT NO. 2 |
| Entity Central Index Key | 0001847075 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | #01-05 Pearl’s Hill Terrace |
| Entity Address, Country | SG |
| Entity Address, City or Town | Singapore |
| Entity Address, Postal Zip Code | 168976 |
| City Area Code | +65 |
| Local Phone Number | 9656 5641 |
