Cover - shares	9 Months Ended
	Mar. 31, 2024	May 09, 2024
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Mar. 31, 2024
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2024
Current Fiscal Year End Date	--06-30
Entity File Number	0-10248
Entity Registrant Name	FONAR CORPORATION
Entity Central Index Key	0000355019
Entity Tax Identification Number	11-2464137
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	110 Marcus Drive
Entity Address, City or Town	Melville
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11747
City Area Code	631
Local Phone Number	694-2929
Title of 12(b) Security	Common Stock, $.0001 par value
Trading Symbol	FONR
Security Exchange Name	NASDAQ
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	false
Common Class B [Member]
Entity Common Stock, Shares Outstanding		146
Common Class C [Member]
Entity Common Stock, Shares Outstanding		382,513
Preferred Class A [Member]
Entity Common Stock, Shares Outstanding		313,438
Common Stock [Member]
Entity Common Stock, Shares Outstanding		6,328,294