Document And Entity Information - shares
6 Months Ended
Jun. 30, 2019
Aug. 05, 2019
Document And Entity Information [Abstract]    
Entity Registrant Name Pulse Biosciences, Inc.  
Entity Filer Category Accelerated Filer  
Entity Central Index Key 0001625101  
Amendment Flag false  
Document Type 10-Q  
Document Fiscal Period Focus Q2  
Document Period End Date Jun. 30, 2019  
Document Fiscal Year Focus 2019  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Emerging Growth Company true  
Entity Ex Transition Period true  
Entity Small Business true  
Entity Common Stock, Shares Outstanding   20,768,444