Cover - shares	6 Months Ended
	Oct. 31, 2020	Nov. 30, 2020
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Oct. 31, 2020
Document Transition Report	false
Entity File Number	001-38675
Entity Registrant Name	Elastic N.V.
Entity Incorporation, State or Country Code	P7
Entity Address, Address Line One	800 West El Camino Real
Entity Address, Address Line Two	Suite 350
Entity Address, City or Town	Mountain View
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94040
City Area Code	650
Local Phone Number	458-2620
Title of 12(b) Security	Ordinary shares, Par Value €0.01 Per Share
Trading Symbol	ESTC
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		87,403,657
Entity Tax Identification Number	00-0000000
Entity Central Index Key	0001707753
Current Fiscal Year End Date	--04-30
Amendment Flag	false
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q2