Cover Page - shares	3 Months Ended
	Apr. 30, 2023	Jun. 01, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Apr. 30, 2023
Document Transition Report	false
Entity File Number	001-38464
Entity Registrant Name	Smartsheet Inc.
Entity Incorporation, State or Country Code	WA
Entity Tax Identification Number	20-2954357
Entity Address, Address Line One	500 108th Ave NE, Suite 200
Entity Address, City or Town	Bellevue,
Entity Address, State or Province	WA
Entity Address, Postal Zip Code	98004
City Area Code	(844)
Local Phone Number	324-2360
Title of 12(b) Security	Class A common stock, no par value per share
Trading Symbol	SMAR
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock Shares Outstanding (in shares)		133,608,334
Document Fiscal Year Focus	2024
Amendment Flag	false
Document Fiscal Period Focus	Q1
Entity Central Index Key	0001366561
Current Fiscal Year End Date	--01-31