Cover - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2025	Nov. 30, 2025	Mar. 31, 2025
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2025
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2025
Current Fiscal Year End Date	--09-30
Entity File Number	001-40621
Entity Registrant Name	MOBIX LABS, INC.
Entity Central Index Key	0001855467
Entity Tax Identification Number	98-1591717
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	1 Venture
Entity Address, Address Line Two	Suite 220
Entity Address, City or Town	Irvine
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	92618
City Area Code	(949)
Local Phone Number	808-8888
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Elected Not To Use the Extended Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 30.5
Documents Incorporated by Reference [Text Block]	Portions of the registrant’s definitive proxy statement for its 2026 annual meeting of stockholders, which will be filed within 120 days after September 30, 2025, are incorporated by reference into Part III of this Annual Report on Form 10-K.
ICFR Auditor Attestation Flag	false
Document Financial Statement Error Correction [Flag]	false
Auditor Firm ID	238
Auditor Name	PricewaterhouseCoopers LLP
Auditor Location	Irvine, California
Class A Common Stock, par value $0.00001 per share
Title of 12(b) Security	Class A Common Stock, par value $0.00001 per share
Trading Symbol	MOBX
Security Exchange Name	NASDAQ
Redeemable warrants, each warrant exercisable for one share of Class A Common Stock
Title of 12(b) Security	Redeemable warrants, each warrant exercisable for one share of Class A Common Stock
Trading Symbol	MOBXW
Security Exchange Name	NASDAQ
Common Class A [Member]
Entity Common Stock, Shares Outstanding		64,308,034
Common Class B [Member]
Entity Common Stock, Shares Outstanding		2,004,901