| Cover | Jan. 14, 2025 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jan. 14, 2025 |
| Entity File Number | 001-42044 |
| Entity Registrant Name | Nano Nuclear Energy Inc. |
| Entity Central Index Key | 0001923891 |
| Entity Tax Identification Number | 88-0861977 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 10 Times Square |
| Entity Address, Address Line Two | 30th Floor |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10018 |
| City Area Code | (212) |
| Local Phone Number | 634-9206 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Common Stock, par value $0.0001 per share |
| Trading Symbol | NNE |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
