v3.26.1
Cover - shares
 6 Months Ended
Jun. 28, 2026
Aug. 17, 2026
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. 28, 2026  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Entity Common Stock Shares Outstanding   6,184,724
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 001-41061  
Entity Incorporation State Country Code WY  
Entity Tax Identification Number 90-1495764  
Entity Address Address Line 1 6300 N. Sagewood Dr,  
Entity Address Address Line 2 Suite H  
Entity Address City Or Town Park City  
Entity Address State Or Province UT  
Entity Address Postal Zip Code 84098  
City Area Code 307  
Local Phone Number 264-5057  
Entity Interactive Data Current Yes  
Entity Address Address Line 3 #217  
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