Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Sep. 30, 2021
Nov. 11, 2021
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Sep. 30, 2021  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1  
Trading Symbol KTRA  
Title of 12(b) Security Common Stock  
Security Exchange Name NASDAQ  
Entity Registrant Name Kintara Therapeutics, Inc.  
Entity Central Index Key 0001498382  
Current Fiscal Year End Date --06-30  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Common Stock, Shares Outstanding   48,535,338
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Incorporation, State or Country Code NV  
Entity File Number 001-37823  
Entity Tax Identification Number 99-0360497  
Entity Address, Address Line One 12707 High Bluff Dr.  
Entity Address, Address Line Two Suite 200  
Entity Address, City or Town San Diego  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92130  
City Area Code 858  
Local Phone Number 350-4364  
Document Quarterly Report true  
Document Transition Report false