| Cover | Nov. 03, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 3, 2021 |
| Entity File Number | 333-249682 |
| Entity Registrant Name | BUNKER HILL MINING CORP. |
| Entity Central Index Key | 0001407583 |
| Entity Tax Identification Number | 32-0196442 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 82 Richmond Street East |
| Entity Address, City or Town | Toronto |
| Entity Address, State or Province | ON |
| Entity Address, Country | CA |
| Entity Address, Postal Zip Code | M5C 1P1 |
| City Area Code | 416 |
| Local Phone Number | 477-7771 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
