Cover - USD ($)	12 Months Ended
Cover - USD ($)	Dec. 29, 2024	Jun. 30, 2025	Mar. 15, 2025
Document Information Line Items
Entity Registrant Name	BT BRANDS, INC.
Entity Central Index Key	0001718224
Document Type	10-K/A
Amendment Flag	true
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	false
Entity Current Reporting Status	Yes
Document Period End Date	Dec. 29, 2024
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2024
Entity Common Stock Shares Outstanding			6,154,724
Entity Public Float		$ 8,079,516
Document Annual Report	true
Document Transition Report	false
Document Fin Stmt Error Correction Flag	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 S
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
Amendment Description	BT Brands, Inc. (the “Company”) is filing this Amendment No. 1 (“Amendment No. 1”) to its Annual Report on Form 10-K for the fiscal year ended December 29, 2024 originally filed with the Securities and Exchange Commission on March 31, 2025 (the “Original Filing”), solely to correct typographical and numerical presentation errors identified in the financial statements filed with the Original Filing (the “Financial Statements”).
Icfr Auditor Attestation Flag	false
Local Phone Number	274-3055
Security 12g Title	Common Stock, par value $0.002 per share
Entity Interactive Data Current	Yes
Common Stocks [Member]
Document Information Line Items
Security 12b Title	Common Stock, $0.002 par value
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

BT Brands, Inc. 10-K/A