Document and Entity Information	6 Months Ended
	Jan. 31, 2022 shares
Cover [Abstract]
Entity Registrant Name	HAMMER FIBER OPTICS HOLDINGS CORP.
Registrant CIK	0001539680
Fiscal Year End	--07-31
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jan. 31, 2022
Entity File Number	000-1539680
Entity Incorporation, State or Country Code	NV
Entity Tax Identification Number	98-1032170
Entity Address, Address Line One	6151 Lake Osprey Drive
Entity Address, City or Town	Sarasota
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	34240
City Area Code	941
Local Phone Number	306-3019
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Shell Company	false
Entity Address, Country	US
Entity Common Stock, Shares Outstanding	60,853,341
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q2
Document Transition Report	false
Entity Address, Address Line Two	Suite 300