v3.26.3
Cover - shares
 6 Months Ended
Jun. 30, 2026
Sep. 14, 2026
Document Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Transition Report false  
Entity Interactive Data Current Yes  
Amendment Flag false  
Document Period End Date Jun. 30, 2026  
Document Fiscal Year Focus 2026  
Document Fiscal Period Focus Q2  
Entity Registrant Name REBORN COFFEE, INC.  
Entity Central Index Key 0001707910  
Entity Tax Identification Number 47-4752305  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Non-accelerated Filer  
Entity File Number 001-41479  
Entity Shell Company false  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Incorporation, State or Country Code DE  
Entity Address, Address Line One 580 N. Berry Street  
Entity Address, City or Town Brea  
Entity Address, Country CA  
Entity Address, Postal Zip Code 92821  
City Area Code (714)  
Local Phone Number 784-6369  
Title of 12(b) Security Common Stock, $0.0001 par value per share  
Trading Symbol REBN  
Security Exchange Name NASDAQ  
Entity Common Stock, Shares Outstanding   8,620,122