| Cover | Nov. 22, 2022 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 22, 2022 |
| 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 | 11101 |
| 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] | |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | CETX |
| Security Exchange Name | NASDAQ |
| Series 1 Preferred Stock | |
| Title of 12(b) Security | Series 1 Preferred Stock |
| Trading Symbol | CETXP |
