Document And Entity Information - shares	9 Months Ended
	Dec. 31, 2022	Feb. 14, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Dec. 31, 2022
Document Transition Report	false
Entity File Number	0-17629
Entity Registrant Name	ADM TRONICS UNLIMITED, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	22-1896032
Entity Address, Address Line One	224-S Pegasus Ave.,
Entity Address, City or Town	Northvale
Entity Address, State or Province	NJ
Entity Address, Postal Zip Code	07647
City Area Code	201
Local Phone Number	767-6040
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Non-accelerated Filer
Non-accelerated filer ☐	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		67,588,504
Entity Central Index Key	0000849401
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false