| Document And Entity Information | Nov. 20, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 20, 2024 |
| Entity Registrant Name | ASP Isotopes Inc. |
| Entity Central Index Key | 0001921865 |
| Entity Emerging Growth Company | true |
| Entity File Number | 001-41555 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 87-2618235 |
| Entity Address, Address Line One | 601 Pennsylvania Avenue NW |
| Entity Address, Address Line Two | South Building, Suite 900 |
| Entity Address, City or Town | Washington |
| Entity Address, State or Province | DC |
| Entity Address, Postal Zip Code | 20004 |
| City Area Code | 202 |
| Local Phone Number | 756-2245 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Ex Transition Period | false |
| Title of 12(b) Security | Common Stock, par value $0.01 |
| Trading Symbol | ASPI |
| Security Exchange Name | NASDAQ |
