Document and Entity Information - USD ($)	12 Months Ended
	May. 31, 2015	Nov. 30, 2014
Document and Entity Information:
Entity Registrant Name	REDtone Asia Inc
Document Type	10-K
Document Period End Date	May 31, 2015
Amendment Flag	false
Entity Central Index Key	0001341319
Current Fiscal Year End Date	--05-31
Entity Common Stock, Shares Outstanding	282,315,356
Entity Public Float		$ 16,938,921
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	Yes
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	FY
Trading Symbol	rtas