| Cover | Sep. 17, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Sep. 17, 2024 |
| Current Fiscal Year End Date | --01-31 |
| Entity File Number | 000-50071 |
| Entity Registrant Name | Liberty Star Uranium & Metals Corp. |
| Entity Central Index Key | 0001172178 |
| Entity Tax Identification Number | 90-0175540 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 2 East Congress St. Ste 900 |
| Entity Address, City or Town | Tucson |
| Entity Address, State or Province | AZ |
| Entity Address, Postal Zip Code | 85701 |
| City Area Code | (520) |
| Local Phone Number | 425-1433 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common |
| Trading Symbol | LBSR |
| Entity Emerging Growth Company | false |
