| Cover | Aug. 26, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Aug. 26, 2021 |
| Entity File Number | 0-16035 |
| Entity Registrant Name | SONO TEK CORP. |
| Entity Central Index Key | 0000806172 |
| Entity Tax Identification Number | 14-1568099 |
| Entity Incorporation, State or Country Code | NY |
| Entity Address, Address Line One | 2012 Route 9W |
| Entity Address, City or Town | Milton |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 12547 |
| City Area Code | (845) |
| Local Phone Number | 795-2020 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Entity Emerging Growth Company | false |
