Cover - shares	6 Months Ended
	Oct. 31, 2024	Dec. 11, 2024
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity Interactive Data Current	Yes
Amendment Flag	false
Document Period End Date	Oct. 31, 2024
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q2
Entity Information [Line Items]
Entity Registrant Name	FREQUENCY ELECTRONICS, INC.
Entity Central Index Key	0000039020
Entity File Number	1-8061
Entity Tax Identification Number	11-1986657
Entity Incorporation, State or Country Code	DE
Current Fiscal Year End Date	--04-30
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Contact Personnel [Line Items]
Entity Address, Address Line One	55 CHARLES LINDBERGH BLVD.
Entity Address, City or Town	MITCHEL FIELD
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11553
Entity Phone Fax Numbers [Line Items]
City Area Code	516
Local Phone Number	794-4500
Entity Listings [Line Items]
Title of 12(b) Security	Common Stock (par value $1.00 per share)
Trading Symbol	FEIM
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		9,611,441