Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
9 Months Ended
Sep. 30, 2019
Nov. 05, 2019
Registrant CIK 0001599117  
Fiscal Year End --12-31  
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
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 511 Fourteenth Street, Suite A-2, A-4, A-6  
Entity Address, City or Town Ramona  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92065  
Entity Address, Address Description Address of principal executive offices  
City Area Code 760  
Local Phone Number 788-4700  
Phone Fax Number Description Registrant’s telephone number, including area code  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company false  
Entity Shell Company false  
Entity Common Stock, Shares Outstanding   23,139,837
Amendment Flag false  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3