| Cover | May 09, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 09, 2023 |
| Current Fiscal Year End Date | --04-30 |
| Entity File Number | 001-40699 |
| Entity Registrant Name | PHARMACYTE BIOTECH, INC. |
| Entity Central Index Key | 0001157075 |
| Entity Tax Identification Number | 62-1772151 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 3960 Howard Hughes Parkway |
| Entity Address, Address Line Two | Suite 500 |
| Entity Address, City or Town | Las Vegas |
| Entity Address, State or Province | NV |
| Entity Address, Postal Zip Code | 89169 |
| City Area Code | (917) |
| Local Phone Number | 595-2850 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | true |
| Title of 12(b) Security | Common Stock |
| Trading Symbol | PMCB |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
