v3.26.1
Cover - USD ($)
12 Months Ended
Jan. 31, 2026
Apr. 27, 2026
Jul. 31, 2025
Cover [Abstract]      
Document Type 10-K    
Amendment Flag false    
Document Annual Report true    
Document Transition Report false    
Document Period End Date Jan. 31, 2026    
Document Fiscal Period Focus FY    
Document Fiscal Year Focus 2026    
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 Street, Suite 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    
Title of 12(g) Security Common Stock, par value $0.00001    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business true    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Public Float     $ 3,269,754
Entity Common Stock, Shares Outstanding   103,341,034  
Documents Incorporated by Reference [Text Block] None    
Document Financial Statement Error Correction [Flag] false    
ICFR Auditor Attestation Flag false    
Auditor Firm ID 2738    
Auditor Opinion [Text Block] We have audited the accompanying consolidated balance sheets of Liberty Star Uranium & Metals Corp. (the Company) as of January 31, 2026 and 2025, and the related consolidated statements of operations, changes in stockholders’ deficit, and cash flows for each of the years in the two-year period ended January 31, 2026, and the related notes (collectively referred to as the financial statements). In our opinion, the financial statements present fairly, in all material respects, the financial position of the Company as of January 31, 2026 and 2025, and the results of its operations and its cash flows for each of the years in the two-year period ended January 31, 2026, in conformity with accounting principles generally accepted in the United States of America.    
Auditor Name M&K CPAS, PLLC    
Auditor Location The Woodlands, Texas