Cover
| Cover | Nov. 16, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Nov. 16, 2021 |
| Entity File Number | 000-11882 |
| Entity Registrant Name | B2Digital, Incorporated |
| Entity Central Index Key | 0000725929 |
| Entity Tax Identification Number | 84-0916299 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 4522 West Village Drive |
| Entity Address, Address Line Two | Suite 215 |
| Entity Address, City or Town | Tampa |
| Entity Address, State or Province | FL |
| Entity Address, Postal Zip Code | 33624 |
| City Area Code | (813) |
| Local Phone Number | 961-3051 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |