Cover - USD ($)	12 Months Ended
	Sep. 30, 2022	Dec. 23, 2022	Mar. 31, 2022
Document Type	10-K
Amendment Flag	false
Document Annual Report	true
Document Transition Report	false
Document Period End Date	Sep. 30, 2022
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--09-30
Entity File Number	001-37464
Entity Registrant Name	CEMTREX, INC.
Entity Central Index Key	0001435064
Entity Tax Identification Number	30-0399914
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	276 Greenpoint Ave
Entity Address, Address Line Two	Suite 208
Entity Address, City or Town	Brooklyn
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	11222
City Area Code	631
Local Phone Number	756-9116
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	false
Entity Shell Company	false
Entity Public Float			$ 15,494,633
Entity Common Stock, Shares Outstanding		27,778,856
ICFR Auditor Attestation Flag	false
Auditor Name	Grassi & Co, CPAs, P.C.
Auditor Location	Jericho, New York
Auditor Firm ID	606
Common Stock [Member]
Title of 12(b) Security	Common Stock, $0.001 par value per share
Trading Symbol	CETX
Security Exchange Name	NASDAQ
Series 1 Preferred Stock [Member]
Title of 12(b) Security	Preferred Stock, Series 1 $0.001 par value per share
Trading Symbol	CETXP
Security Exchange Name	NASDAQ