| Cover | Oct. 19, 2023 |
| Cover [Abstract] | |
| Entity Registrant Name | Hempacco Co., Inc. |
| Entity Central Index Key | 0001892480 |
| Document Type | 8-K |
| Amendment Flag | false |
| Entity Emerging Growth Company | false |
| Document Period End Date | Oct. 19, 2023 |
| Entity File Number | 001-41487 |
| Entity Tax Identification Number | 83-4231457 |
| Entity Address Address Line 1 | 9925 Airway Road |
| Entity Address City Or Town | San Diego |
| Entity Address State Or Province | CA |
| Entity Address Postal Zip Code | 92154 |
| City Area Code | 619 |
| Local Phone Number | 779-0715 |
| Security 12b Title | Common Stock, par value $0.001 |
| Trading Symbol | HPCO |
| Security Exchange Name | NASDAQ |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
