Document and Entity Information - shares	9 Months Ended
	Dec. 31, 2019	Feb. 10, 2020
Details
Registrant CIK	0000925661
Fiscal Year End	--03-31
Registrant Name	SECTOR 10 INC
SEC Form	10-Q
Period End date	Dec. 31, 2019
Tax Identification Number (TIN)	33-0565710
Number of common stock shares outstanding		305,778
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Quarterly Report	true
Document Transition Report	false
Entity Incorporation, State or Country Code	DE
Entity File Number	000-24370
Entity Address, Address Line One	222 South Main Street
Entity Address, Address Line Two	5th Floor
Entity Address, City or Town	Salt Lake City
Entity Address, State or Province	UT
Entity Address, Postal Zip Code	84101
Entity Address, Address Description	Address of principal executive offices, including zip code
City Area Code	(206)
Local Phone Number	853-4866
Amendment Flag	false
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q3