Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.19.2
Document And Entity Information - shares
9 Months Ended
Jun. 30, 2019
Jul. 31, 2019
Document And Entity Information    
Entity Registrant Name Arch Therapeutics, Inc.  
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Entity Central Index Key 0001537561  
Current Fiscal Year End Date --09-30  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Trading Symbol ARTH  
Entity Common Stock, Shares Outstanding   173,577,233
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Small Business true