| Cover | May 14, 2024 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | May 14, 2024 |
| Entity File Number | 001-41347 |
| Entity Registrant Name | Expion360 Inc. |
| Entity Central Index Key | 0001894954 |
| Entity Tax Identification Number | 81-2701049 |
| Entity Incorporation, State or Country Code | NV |
| Entity Address, Address Line One | 2025 SW Deerhound Avenue |
| Entity Address, City or Town | Redmond |
| Entity Address, State or Province | OR |
| Entity Address, Postal Zip Code | 97756 |
| City Area Code | (541) |
| Local Phone Number | 797-6714 |
| 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 $0.001 per share |
| Trading Symbol | XPON |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | true |
| Elected Not To Use the Extended Transition Period | false |
