Document and Entity Information - shares	9 Months Ended
	May 31, 2018	Jul. 10, 2018
Document And Entity Information
Entity Registrant Name	SIMULATIONS PLUS INC
Entity Central Index Key	0001023459
Document Type	10-Q
Document Period End Date	May 31, 2018
Amendment Flag	false
Current Fiscal Year End Date	--08-31
Is Entity a Well-known Seasoned Issuer?	No
Is Entity a Voluntary Filer?	No
Is Entity's Reporting Status Current?	Yes
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		17,365,084
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2018