Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2021
Apr. 30, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Mar. 31, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Trading Symbol OSS  
Title of 12(b) Security Common Stock, $0.0001 par value per share  
Security Exchange Name NASDAQ  
Entity Registrant Name One Stop Systems, Inc.  
Entity Central Index Key 0001394056  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Document Quarterly Report true  
Document Transition Report false  
Entity Common Stock, Shares Outstanding   18,510,415
Entity File Number 001-38371  
Entity Tax Identification Number 33-0885351  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 2235 Enterprise Street #110  
Entity Address, City or Town Escondido  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92029  
City Area Code 760  
Local Phone Number 745-9883