v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
May 20, 2026
Cover [Abstract]    
Entity Registrant Name ASP Isotopes Inc.  
Entity Central Index Key 0001921865  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company true  
Entity Current Reporting Status Yes  
Document Period End Date Mar. 31, 2026  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Entity Ex Transition Period false  
Entity Common Stock Shares Outstanding   125,903,447
Entity File Number 001-41555  
Entity Incorporation State Country Code DE  
Entity Tax Identification Number 87-2618235  
Entity Address Address Line 1 2200 Ross Avenue  
Entity Address Address Line 2 Suite 4575E  
Entity Address City Or Town Dallas  
Entity Address State Or Province TX  
Entity Address Postal Zip Code 75201  
City Area Code 214  
Local Phone Number 432-8219  
Security 12b Title Common Stock, par value $0.01per share  
Trading Symbol ASPI  
Security Exchange Name NASDAQ  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes