Cover - shares shares in Millions	9 Months Ended
	Oct. 31, 2020	Nov. 25, 2020
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2020
Document Transition Report	false
Entity File Number	001-39504
Entity Registrant Name	SNOWFLAKE INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	46-0636374
Entity Address, Address Line One	450 Concar Drive
Entity Address, City or Town	San Mateo
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94402
City Area Code	844
Local Phone Number	766-9355
Title of 12(b) Security	Class A Common Stock, $0.0001 par value
Trading Symbol	SNOW
Security Exchange Name	NYSE
Entity Current Reporting Status	No
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Central Index Key	0001640147
Current Fiscal Year End Date	--01-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q3
Amendment Flag	false
Class A Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		50.7
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		232.4