Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2019	Aug. 30, 2019
Document And Entity Information [Abstract]
Entity Registrant Name	Pulse Biosciences, Inc.
Entity Filer Category	Accelerated Filer
Entity Central Index Key	0001625101
Amendment Flag	true
Document Type	10-Q/A
Document Fiscal Period Focus	Q1
Document Period End Date	Mar. 31, 2019
Document Fiscal Year Focus	2019
Current Fiscal Year End Date	--12-31
Entity Emerging Growth Company	true
Entity Ex Transition Period	true
Entity Small Business	true
Entity Common Stock, Shares Outstanding		20,768,444
Amendment Description	Pulse Biosciences, Inc. (the "Company") is filing this Amendment No. 1 to the Quarterly Report on Form 10-Q/A (this "Amendment") to amend its Quarterly Report on Form 10-Q for the fiscal quarter ended March 31, 2019 filed with the Securities and Exchange Commission (the "SEC") on August 8, 2019 (the "Original Filing"). This Amendment is being filed solely for the purpose of updating Exhibits 31.1 and 31.2. The original exhibits inadvertently omitted certain language regarding management's responsibility for establishing and maintaining internal control over financial reporting (as defined in Exchange Act Rules 13a-15(f) and 15d-15(f)). Management has, and at the date of the original filing had, designed internal control over financial reporting to provide reasonable assurance regarding the reliability of financial reporting and the preparation of the Company's financial statements in accordance with generally accepted accounting principles. Except for the foregoing, the Original Filing remains unchanged. This Amendment does not reflect any events occurring after the filing of the Original Filing, nor does it modify or otherwise update in any way disclosures made in the Original Filing. No revisions are being made to the Company's financial statements or any other disclosure contained in the Original Filing. Accordingly, this Amendment should be read in conjunction with the Company's filings made with the SEC subsequent to the filing of the Original Filing, including any amendment to those filings.