| Document And Entity Information | Sep. 26, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 26, 2022 |
| Entity Registrant Name | HashiCorp, Inc. |
| Entity Central Index Key | 0001720671 |
| Entity Emerging Growth Company | true |
| Securities Act File Number | 001-41121 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 32-0410665 |
| Entity Address, Address Line One | 101 Second Street |
| Entity Address, Address Line Two | Suite 700 |
| Entity Address, City or Town | San Francisco |
| Entity Address, State or Province | CA |
| Entity Address, Postal Zip Code | 94105 |
| City Area Code | 415 |
| Local Phone Number | 301-3250 |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Ex Transition Period | true |
| Title of 12(b) Security | Class A Common Stock, par value $0.000015 per share |
| Trading Symbol | HCP |
| Security Exchange Name | NASDAQ |
