v3.26.1
Document And Entity Information - shares
3 Months Ended
Jun. 30, 2026
Aug. 19, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2026  
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 2026  
Document Fiscal Period Focus Q1  
Amendment Flag false