Document and Entity Information - USD ($)	12 Months Ended
Document and Entity Information - USD ($)	Mar. 31, 2023	Aug. 18, 2023	Sep. 30, 2022
Details
Registrant CIK	0001089297
Fiscal Year End	--03-31
Registrant Name	NOVAGANT CORP
SEC Form	10-K/A
Period End date	Mar. 31, 2023
Tax Identification Number (TIN)	33-0038621
Number of common stock shares outstanding		493,639,025
Public Float			$ 6,113,916
Filer Category	Non-accelerated Filer
Current with reporting	Yes
Interactive Data Current	Yes
Voluntary filer	No
Well-known Seasoned Issuer	No
Shell Company	false
Small Business	true
Emerging Growth Company	false
Document Financial Statement Error Correction	false
Amendment Description	The Annual Report of Novagant Corp. on Form 10-K for the fiscal year ended March 31, 2023 (the 'Form 10-K'), was filed with the Securities and Exchange Commission (the 'Commission') on June 29, 2023. This Amendment No. 2 to the Company's Form 10-K (the 'Amendment') amends our annual report on Form 10-K for the year ended March 31, 2023 (the 'Annual Report'). The purpose of this Amendment is (i) to amend Item 9C of the Annual Report to provide the disclosures required under Item 9C(b) of Form 10-K, (ii) to revise the last paragraph required by Item 9C(a) of Form 10-K in the form of an exhibit 99.1, (iii) to amend the articles of incorporation of the corporation at Exhibit 3.1(a) under Item 9B on September 8, 2023, (iv) to amend the Certificate of Designation of Series A Preferred Stock at Exhibit 3.4(a2) under Item 9B on September 11, 2023, and (v) to update regarding the Series A Preferred shareholder list in the table of 'Security Ownership Of Certain Beneficial Owners and Management and Related Stockholder Matters' under Item 12 on page 44. Apart from expressly set forth above, this Amendment does not, and does not purport to, amend, update or restate the information in any other item of the Form 10-K or reflect any events that have occurred after the filing of the original Form 10-K.
Document Annual Report	true
Document Transition Report	false
Entity File Number	0-26675
Entity Incorporation, State or Country Code	NV
Entity Address, Address Line One	Suite 2006, AIA Kowloon Tower, Landmark East
Entity Address, Address Line Two	100 How Ming Street
Entity Address, City or Town	KT
Entity Address, Country	HK
Entity Address, Postal Zip Code	19801
City Area Code	852
Local Phone Number	9407-9401
Auditor Firm ID	957
Auditor Name	Zhen Hui Certified Public Accountants
Auditor Location	Hong Kong, China
Amendment Flag	true
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	FY

NOVAGANT CORP 10-K/A