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Document and Entity Information - shares
 9 Months Ended
Dec. 31, 2019
Feb. 12, 2020
Document And Entity Information    
Entity Registrant Name Modular Medical, Inc.  
Entity Central Index Key 0001074871  
Document Type 10-Q  
Document Period End Date Dec. 31, 2019  
Amendment Flag false  
Current Fiscal Year End Date --03-31  
Is Entity's Reporting Status Current? Yes  
Entity Filer Category Non-accelerated Filer  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Small Business true  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   17,870,261
Document Fiscal Period Focus Q3  
Document Fiscal Year Focus 2020