Document and Entity Information - shares
3 Months Ended
Sep. 30, 2017
Nov. 13, 2017
Document and Entity Information    
Entity Registrant Name ContraVir Pharmaceuticals, Inc.  
Entity Central Index Key 0001583771  
Document Type 10-Q  
Document Period End Date Sep. 30, 2017  
Amendment Flag false  
Current Fiscal Year End Date --06-30  
Entity Current Reporting Status Yes  
Entity Filer Category Smaller Reporting Company  
Entity Common Stock, Shares Outstanding   78,278,306
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q1