v3.25.1
Cover - shares
 3 Months Ended
Mar. 31, 2025
May 07, 2025
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Mar. 31, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q1  
Entity Information [Line Items]    
Entity Registrant Name Femasys Inc.  
Entity Central Index Key 0001339005  
Entity File Number 001-40492  
Entity Tax Identification Number 11-3713499  
Entity Incorporation, State or Country Code DE  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Shell Company false  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Contact Personnel [Line Items]    
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  
Entity Phone Fax Numbers [Line Items]    
City Area Code 770  
Local Phone Number 500-3910  
Entity Listings [Line Items]    
Title of 12(b) Security Common stock, $0.001 par value  
Trading Symbol FEMY  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   27,239,885