| Cover | Nov. 25, 2022 |
| Document Information [Line Items] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 25, 2022 |
| Entity File Number | 001-40545 |
| Entity Registrant Name | FGI Industries Ltd. |
| Entity Central Index Key | 0001864943 |
| Entity Tax Identification Number | 98-1603252 |
| Entity Incorporation, State or Country Code | E9 |
| Entity Address, Address Line One | 906 Murray Road |
| Entity Address, City or Town | East Hanover |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 07869 |
| City Area Code | 973 |
| Local Phone Number | 428-0400 |
| 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 |
| Common Class A [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Ordinary Shares, $0.0001 par value per share |
| Trading Symbol | FGI |
| Security Exchange Name | NASDAQ |
| Warrants to purchase Ordinary Shares [Member] | |
| Document Information [Line Items] | |
| Title of 12(b) Security | Warrants to purchase Ordinary Shares |
| Trading Symbol | FGIWW |
| Security Exchange Name | NASDAQ |
