Document And Entity Information (USD $)	6 Months Ended
	Feb. 29, 2012	Apr. 09, 2012	Feb. 28, 2011
Document and Entity Information [Abstract]
Entity Registrant Name	SIMULATIONS PLUS INC
Document Type	10-Q
Current Fiscal Year End Date	--08-31
Entity Common Stock, Shares Outstanding		15,915,594
Entity Public Float			$ 28,608,254
Amendment Flag	false
Entity Central Index Key	0001023459
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Filer Category	Smaller Reporting Company
Entity Well-known Seasoned Issuer	No
Document Period End Date	Feb. 29, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2