Cover - USD ($)	12 Months Ended
	Jul. 31, 2022	Oct. 25, 2022	Jan. 31, 2022
Cover [Abstract]
Entity Registrant Name	NORTHERN MINERALS & EXPLORATION LTD.
Entity Central Index Key	0001415744
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--07-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Jul. 31, 2022
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Entity Common Stock Shares Outstanding		87,509,357
Entity Public Float			$ 6,617,082
Document Annual Report	true
Document Transition Report	false
Entity File Number	333-146934
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	98-0557171
Entity Address Address Line 1	881 West State Road
Entity Address City Or Town	Pleasant Grove
Entity Address State Or Province	UT
Entity Address Country	CA
Entity Address Postal Zip Code	84062
City Area Code	801
Local Phone Number	885-9260
Entity Interactive Data Current	Yes
Auditor Firm Id	457
Auditor Name	Haynie & Company
Auditor Location	Salt Lake City, Utah