| Document And Entity Information | 12 Months Ended |
| Sep. 30, 2024 | |
| Document Information Line Items | |
| Entity Registrant Name | LINKAGE GLOBAL INC |
| Document Type | F-1/A |
| Amendment Flag | true |
| Amendment Description | This Amendment No. 2 to the Registration Statement on Form F-1 is being filed solely for the purpose of filing two additional exhibits. |
| Entity Central Index Key | 0001969401 |
| Entity Emerging Growth Company | true |
| Entity Ex Transition Period | false |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 2-23-3 Minami-Ikebukuro |
| Entity Address, City or Town | Toshima-kuTokyo |
| Entity Address, Country | JP |
| Entity Address, Postal Zip Code | 171-0022 |
| City Area Code | +03 |
| Local Phone Number | 5927-9261 |
| Business Contact | |
| Document Information Line Items | |
| Entity Address, Address Line One | 122 East 42nd Street |
| Entity Address, City or Town | New York |
| Entity Address, Postal Zip Code | 10168 |
| City Area Code | (212) |
| Local Phone Number | 947-7200 |
| Contact Personnel Name | Cogency Global Inc. |
| Entity Address, Address Line Two | 18th Floor |
| Entity Address, State or Province | NY |
