v3.26.1
Cover - shares
3 Months Ended
Mar. 31, 2026
May 14, 2026
Cover [Abstract]    
Document Type 10-Q  
Amendment Flag false  
Document Quarterly Report true  
Document Transition Report false  
Document Period End Date Mar. 31, 2026  
Document Fiscal Period Focus Q1  
Document Fiscal Year Focus 2026  
Current Fiscal Year End Date --12-31  
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  
Title of 12(b) Security Common Stock, par value $0.001 per share  
Trading Symbol XPON  
Security Exchange Name NASDAQ  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Elected Not To Use the Extended Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   11,438,298