Cover - shares	9 Months Ended
	Nov. 02, 2024	Dec. 03, 2024
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Nov. 02, 2024
Document Transition Report	false
Entity File Number	001-41140
Entity Registrant Name	SAMSARA INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	47-3100039
Entity Address, Address Line One	1 De Haro Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94107
City Area Code	415
Local Phone Number	985-2400
Title of 12(b) Security	Class A Common Stock, $0.0001 par value per share
Trading Symbol	IOT
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 Central Index Key	0001642896
Amendment Flag	false
Current Fiscal Year End Date	--02-01
Document Fiscal Year Focus	2025
Document Fiscal Period Focus	Q3
Common Class A
Cover [Abstract]
Entity Common Stock, Shares Outstanding		269,400,337
Common Class B
Cover [Abstract]
Entity Common Stock, Shares Outstanding		291,798,028
Common Class C
Cover [Abstract]
Entity Common Stock, Shares Outstanding		0