Annual report pursuant to section 13 and 15(d)

Document and Entity Information

Document and Entity Information (USD $)
12 Months Ended
Sep. 30, 2013
Dec. 05, 2013
Mar. 29, 2013
Document and Entity Information      
Entity Registrant Name SINGLE TOUCH SYSTEMS INC    
Entity Central Index Key 0001157817    
Amendment Flag false    
Current Fiscal Year End Date --09-30    
Document Type 10-K    
Document Period End Date Sep. 30, 2013    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2013    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Smaller Reporting Company    
Entity Public Float     $ 53,380,338
Entity Common Stock, Shares Outstanding   141,995,872