Document and Entity Information	3 Months Ended
	Apr. 30, 2015	Jun. 18, 2015
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Apr. 30, 2015
Trading Symbol	lbsr
Entity Registrant Name	LIBERTY STAR URANIUM & METALS CORP.
Entity Central Index Key	0001172178
Current Fiscal Year End Date	--01-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock, Shares Outstanding		1,179,474,020
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well Known Seasoned Issuer	No
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q1