Document And Entity Information - shares	6 Months Ended
	Nov. 30, 2022	Jan. 11, 2023
Document Information Line Items
Entity Registrant Name	BIOMERICA, INC.
Trading Symbol	BMRA
Document Type	10-Q
Current Fiscal Year End Date	--05-31
Entity Common Stock, Shares Outstanding		13,479,413
Amendment Flag	false
Entity Central Index Key	0000073290
Entity Current Reporting Status	Yes
Entity Filer Category	Non-accelerated Filer
Document Period End Date	Nov. 30, 2022
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-37863
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	95-2645573
Entity Address, Address Line One	17571 Von Karman Avenue
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92614
City Area Code	949
Local Phone Number	645-2111
Title of 12(b) Security	COMMON STOCK, PAR VALUE $0.08
Security Exchange Name	NASDAQ
Entity Interactive Data Current	Yes