Cover - shares	9 Months Ended
	May 31, 2022	Jun. 30, 2022
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Quarterly Report	true
Document Transition Report	false
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2022
Current Fiscal Year End Date	--08-31
Entity File Number	001-32046
Entity Registrant Name	Simulations Plus, Inc.
Entity Central Index Key	0001023459
Entity Incorporation, State or Country Code	CA
Entity Tax Identification Number	95-4595609
Entity Address, Address Line One	42505 10th Street West
Entity Address, City or Town	Lancaster
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	93534-7059
City Area Code	(661)
Local Phone Number	723-7723
Trading Symbol	SLP
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Document Period End Date	May 31, 2022
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,235,562
Entity Filer Category	Large Accelerated Filer
Title of 12(b) Security	Common Stock, par value $0.001 per share