v3.25.2
Cover - shares
6 Months Ended
Jun. 29, 2025
Aug. 15, 2025
Document Information Line Items    
Entity Registrant Name BT BRANDS, INC.  
Entity Central Index Key 0001718224  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Current Reporting Status Yes  
Document Period End Date Jun. 29, 2025  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2025  
Entity Common Stock Shares Outstanding   6,154,724
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 333-233233  
Entity Incorporation State Country Code WY  
Entity Tax Identification Number 90-1495764  
Entity Address Address Line 1 10501 Wayzata Blvd South  
Entity Address Address Line 2 Suite 102  
Entity Address City Or Town Minnetonka  
Entity Address State Or Province MN  
Entity Address Postal Zip Code 55305  
City Area Code 307  
Local Phone Number 274-3055  
Entity Interactive Data Current Yes  
Common Stocks [Member]    
Document Information Line Items    
Security 12b Title Common stock, $0.002 per share  
Trading Symbol BTBD  
Security Exchange Name NASDAQ  
Warrants [Member    
Document Information Line Items    
Security 12b Title Warrant to Purchase Common Stock  
Trading Symbol BTBDW  
Security Exchange Name NASDAQ