v3.26.1
Document And Entity Information - USD ($)
 12 Months Ended
Mar. 31, 2026
Jul. 14, 2026
Sep. 30, 2025
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Mar. 31, 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 Pegasus Avenue    
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    
Title of 12(g) Security COMMON STOCK, $.0005 PAR VALUE    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
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    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 6,758,849
Entity Common Stock, Shares Outstanding (in shares)   67,588,492  
Auditor Name JVA Accountants & Advisors, LLC    
Auditor Firm ID 5288    
Auditor Location Palm Beach Gardens, Florida 33418    
Entity Central Index Key 0000849401    
Current Fiscal Year End Date --03-31    
Document Fiscal Year Focus 2026    
Document Fiscal Period Focus FY    
Amendment Flag false