Document And Entity Information - shares	6 Months Ended
	Sep. 30, 2023	Nov. 14, 2023
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
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
Entity Small Business	true
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		67,588,492
Entity Central Index Key	0000849401
Current Fiscal Year End Date	--03-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q2
Amendment Flag	false