v3.25.2
Cover
 12 Months Ended
Mar. 31, 2025
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Document Shell Company Report false
Entity Interactive Data Current Yes
Document Accounting Standard International Financial Reporting Standards
ICFR Auditor Attestation Flag false
Amendment Flag false
Document Period End Date Mar. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Information [Line Items]  
Entity Registrant Name Metalpha Technology Holding Limited
Entity Central Index Key 0001682241
Entity File Number 001-38208
Entity Incorporation, State or Country Code E9
Current Fiscal Year End Date --03-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Entity Contact Personnel [Line Items]  
Entity Address, Address Line One Suite 6703-04
Entity Address, Address Line Two Central Plaza18 Harbour Road
Entity Address, Address Line Three Wan Chai
Entity Address, City or Town Hong Kong
Entity Address, Country CN
Entity Address, Postal Zip Code 000-0000
Entity Listings [Line Items]  
Title of 12(b) Security Ordinary Shares, par value US$0.0001 per share
Trading Symbol MATH
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 39,498,371
Business Contact [Member]  
Entity Contact Personnel [Line Items]  
Contact Personnel Name Bingzhong Wang
Entity Address, Address Line One Suite 6703-04
Entity Address, Address Line Two Central Plaza18 Harbour Road
Entity Address, Address Line Three Wan Chai
Entity Address, City or Town Hong Kong
Entity Address, Country CN
Entity Address, Postal Zip Code 000-0000
Entity Phone Fax Numbers [Line Items]  
City Area Code 852
Local Phone Number 35652920