v3.26.1
Document And Entity Information - shares
 6 Months Ended
Jun. 30, 2026
Aug. 13, 2026
Document Information Line Items    
Entity Central Index Key 0001339005  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Transition Report false  
Entity File Number 001-40492  
Entity Registrant Name Femasys Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 11-3713499  
Entity Address, Address Line One 3950 Johns Creek Court  
Entity Address, Address Line Two Suite 100  
Entity Address, City or Town Suwanee  
Entity Address, State or Province GA  
Entity Address, Postal Zip Code 30024  
City Area Code 770  
Local Phone Number 500-3910  
Title of 12(b) Security Common stock, $0.001 par value  
Trading Symbol FEMY  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   8,375,027
Amendment Flag false  
Document Fiscal Period Focus Q2  
Current Fiscal Year End Date --12-31