v3.21.2
Cover
12 Months Ended
Mar. 31, 2021
Cover [Abstract]  
Document Type POS AM
Amendment Flag true
Amendment description No changes to 10K information
Document Period End Date Mar. 31, 2021
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2021
Entity Registrant Name B2Digital, Inc.
Entity Central Index Key 0000725929
Entity Incorporation, State or Country Code DE
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false