Document and Entity Information (USD $)	12 Months Ended
	May 31, 2012	Aug. 23, 2012
Document and Entity Information
Entity Registrant Name	Redtone Asia Inc
Document Type	10-K
Document Period End Date	May 31, 2012
Amendment Flag	false
Entity Central Index Key	0001341319
Current Fiscal Year End Date	--05-31
Entity Common Stock, Shares Outstanding	282,315,325
Entity Filer Category	Smaller Reporting Company
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Entity Well-known Seasoned Issuer	No
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	FY
Entity Public Float		$ 9,392,481