Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2019	Apr. 10, 2020
Document And Entity Information
Entity Registrant Name	PCT LTD
Entity Central Index Key	0001119897
Document Type	10-Q
Document Period End Date	Sep. 30, 2019
Entity Incorporation, State or Country Code	NV
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Entity File Number	000-31549
Is Entity's Reporting Status Current?	Yes
Entity Interactive Data Current	Yes
Is Entity Emerging Growth Company?	false
Entity Filer Category	Non-accelerated Filer
Entity Small Business	true
Entity Common Stock, Shares Outstanding		527,813,393
Document Fiscal Period Focus	Q3
Document Fiscal Year Focus	2019
Entity Shell Company	false