Transition report pursuant to Rule 13a-10 or 15d-10

Document And Entity Information

Document And Entity Information - USD ($)
9 Months Ended
Dec. 31, 2021
Mar. 30, 2022
Jun. 30, 2021
Document Information Line Items      
Entity Registrant Name Crown Electrokinetics Corp.    
Trading Symbol CRKN    
Document Type 10-KT    
Current Fiscal Year End Date --12-31    
Entity Common Stock, Shares Outstanding   14,563,458  
Entity Public Float     $ 53,100,000
Amendment Flag false    
Entity Central Index Key 0001761696    
Entity Current Reporting Status No    
Entity Voluntary Filers No    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Document Period End Date Dec. 31, 2021    
Document Fiscal Year Focus 2021    
Document Fiscal Period Focus FY    
Entity Small Business true    
Entity Emerging Growth Company true    
Entity Shell Company false    
Entity Ex Transition Period true    
ICFR Auditor Attestation Flag false    
Document Annual Report false    
Document Transition Report true    
Document Period Start Date Apr. 01, 2021    
Entity File Number 333-249833    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 47-5423944    
Entity Address, Address Line One 1110 NE Circle Blvd    
Entity Address, City or Town Corvallis    
Entity Address, State or Province OR    
Entity Address, Postal Zip Code 97330    
City Area Code (800)    
Local Phone Number 674-3612    
Title of 12(b) Security Common Stock, Par Value $0.0001 Per Share    
Security Exchange Name NASDAQ    
Entity Interactive Data Current Yes    
Auditor Firm ID 688    
Auditor Name Marcum LLP    
Auditor Location Costa Mesa, California