| Cover | May 17, 2024 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 17, 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 |
| Common stock, par value $0.0001 per share | |
| Title of 12(b) Security | Common stock, par value $0.0001 per share |
| Trading Symbol | SPEC |
| Security Exchange Name | NASDAQ |
| Redeemable Warrants, each whole warrant exercisable for one share of common stock, at an exercise price of $11.50 per share | |
| Title of 12(b) Security | Redeemable Warrants, each whole warrant exercisable for one share of common stock, at an exercise price of $11.50 per share |
| Trading Symbol | SPECW |
| Security Exchange Name | NASDAQ |
