| Cover | Oct. 25, 2022 |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Oct. 25, 2022 |
| Current Fiscal Year End Date | --12-31 |
| Entity File Number | 001-41097 |
| Entity Registrant Name | CARDIO DIAGNOSTICS HOLDINGS, INC. |
| Entity Central Index Key | 0001870144 |
| Entity Tax Identification Number | 87-0925574 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 400 North Aberdeen Street |
| Entity Address, Address Line Two | Suite 900 |
| Entity Address, City or Town | Chicago |
| Entity Address, State or Province | IL |
| Entity Address, Postal Zip Code | 60642 |
| City Area Code | (631) |
| Local Phone Number | 796-5412 |
| 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 | false |
| Common Stock, par value $0.00001 | |
| Title of 12(b) Security | Common Stock, par value $0.00001 |
| Trading Symbol | CDIO |
| Security Exchange Name | NASDAQ |
| Redeemable warrants, each warrant exercisable for one-half of one share of common stock | |
| Title of 12(b) Security | Redeemable warrants, each warrant exercisable for one-half of one share of common stock |
| Trading Symbol | CDIOW |
| Security Exchange Name | NASDAQ |
