| Cover | Oct. 19, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 19, 2024 |
| Entity File Number | 001-40976 |
| Entity Registrant Name | Spectaire Holdings Inc. |
| Entity Central Index Key | 0001844149 |
| Entity Tax Identification Number | 98-1578608 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 155 Arlington St. |
| Entity Address, City or Town | Watertown |
| Entity Address, State or Province | MA |
| Entity Address, Postal Zip Code | 02472 |
| City Area Code | (508) |
| Local Phone Number | 213-8991 |
| 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 |
