Document and Entity Information - shares	6 Months Ended
	Aug. 01, 2015	Sep. 02, 2015
Document and Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Aug. 01, 2015
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q2
Trading Symbol	FIVE
Entity Registrant Name	Five Below, Inc.
Entity Central Index Key	0001177609
Current Fiscal Year End Date	--01-30
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		54,526,499