v3.25.2
Document And Entity Information
 12 Months Ended
Mar. 31, 2025
Document Information [Line Items]  
Entity Central Index Key 0001617867
Entity Registrant Name Autonomix Medical, Inc.
Amendment Flag false
Document Type POS AM
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 47-1607810
Entity Address, Address Line One 21 Waterway Avenue, Suite 300
Entity Address, City or Town The Woodlands
Entity Address, State or Province TX
Entity Address, Postal Zip Code 77380
City Area Code 713
Local Phone Number 588-6150
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false