Cover - $ / shares	3 Months Ended
	Oct. 31, 2024	Dec. 13, 2024
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Oct. 31, 2024
Document Fiscal Period Focus	Q1
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--07-31
Entity File Number	000-13176
Entity Registrant Name	NON INVASIVE MONITORING SYSTEMS INC /FL/
Entity Central Index Key	0000720762
Entity Tax Identification Number	59-2007840
Entity Incorporation, State or Country Code	FL
Entity Address, Address Line One	4400 Biscayne Blvd.
Entity Address, Address Line Two	Suite 180
Entity Address, City or Town	Miami
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33137
City Area Code	(305)
Local Phone Number	575-4200
Title of 12(b) Security	Common Stock $0.01 par value per share
Trading Symbol	NIMU
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	true
Entity Common Stock, Shares Outstanding		154,810,655
Entity Listing, Par Value Per Share	$ 0.01