XML 10 R1.htm IDEA: XBRL DOCUMENT v3.21.2
Document And Entity Information - shares
3 Months Ended
Jun. 30, 2021
Aug. 23, 2021
Document Information [Line Items]    
Entity Central Index Key 0000849401  
Entity Registrant Name ADM TRONICS UNLIMITED, INC.  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2022  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2021  
Document Transition Report false  
Entity File Number 0-17629  
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   67,588,492