Cover - shares	6 Months Ended
	Jun. 30, 2025	Aug. 08, 2025
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Period End Date	Jun. 30, 2025
Document Fiscal Period Focus	Q2
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--12-31
Entity File Number	001-37649
Entity Registrant Name	FIEE, INC.
Entity Central Index Key	0001467761
Entity Tax Identification Number	04-2621506
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	Flat A1, 29/F, Block A
Entity Address, Address Line Two	TML Tower
Entity Address, Address Line Three	3 Hoi Shing Road
Entity Address, City or Town	Tsuen Wan
Entity Address, Country	HK
Entity Address, Postal Zip Code	03101
City Area Code	833
Local Phone Number	966-4646
Title of 12(b) Security	Common Stock, $0.01 per share
Trading Symbol	FIEE
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
Entity Common Stock, Shares Outstanding		6,224,389