Document and Entity Information - USD ($)	12 Months Ended
	Jan. 30, 2016	Mar. 22, 2016	Jul. 31, 2015
Document and Entity Information [Abstract]
Document Type	10-K
Amendment Flag	false
Document Period End Date	Jan. 30, 2016
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
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		54,591,081
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float			$ 1,720,250,448