Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2021
May 03, 2021
Registrant CIK 0001599117  
Fiscal Year End --12-31  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Mar. 31, 2021  
Document Transition Report false  
Entity File Number 000-55323  
Entity Registrant Name Mentor Capital, Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 77-0395098  
Entity Address, Address Line One 5964 Campus Court  
Entity Address, City or Town Plano  
Entity Address, State or Province TX  
Entity Address, Postal Zip Code 75093  
Entity Address, Address Description Address of principal executive offices  
Phone Fax Number Description Registrant’s telephone number, including area code  
City Area Code 760  
Local Phone Number 788-4700  
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  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   22,850,947
Amendment Flag false  
Document Fiscal Year Focus 2021  
Document Fiscal Period Focus Q1