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Cover
Sep. 29, 2021
Affiliate, Collateralized Security [Line Items]  
Document Type 8-K
Amendment Flag false
Document Period End Date Sep. 29, 2021
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 Bld. 8 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
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Elected Not To Use the Extended Transition Period true
Common Stock [Member]  
Affiliate, Collateralized Security [Line Items]  
Title of 12(b) Security Common Stock
Trading Symbol CETX
Security Exchange Name NASDAQ
Series 1 Preferred Stock  
Affiliate, Collateralized Security [Line Items]  
Title of 12(b) Security Series 1 Preferred Stock
Trading Symbol CETXP
Security Exchange Name NASDAQ
Series 1 Warrants  
Affiliate, Collateralized Security [Line Items]  
Title of 12(b) Security Series 1 Warrants
Trading Symbol CETXW
Security Exchange Name NASDAQ