| Cover | Mar. 16, 2022 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Mar. 16, 2022 |
| Entity File Number | 000-16035 |
| 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 |
| Title of 12(b) Security | Common Stock, $0.01 par value per share |
| Trading Symbol | SOTK |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
