Cover	12 Months Ended
	May 31, 2023 USD ($) shares
Cover [Abstract]
Entity Registrant Name	Karbon-X Corp.
Entity Central Index Key	0001729637
Document Type	10-K
Amendment Flag	false
Entity Voluntary Filers	No
Current Fiscal Year End Date	--05-31
Entity Well Known Seasoned Issuer	No
Entity Small Business	true
Entity Shell Company	false
Entity Emerging Growth Company	true
Entity Current Reporting Status	Yes
Document Period End Date	May 31, 2023
Entity Filer Category	Non-accelerated Filer
Document Fiscal Period Focus	FY
Document Fiscal Year Focus	2023
Entity Ex Transition Period	false
Entity Common Stock Shares Outstanding | shares	72,579,000
Entity Public Float | $	$ 0
Document Annual Report	true
Document Transition Report	false
Entity File Number	000-56288
Entity Incorporation State Country Code	NV
Entity Tax Identification Number	82-2882342
Entity Address Address Line 1	910 7th Ave SW
Entity Address City Or Town	Calgary
Entity Address Country	CA
Entity Address Postal Zip Code	T2P 3N8
City Area Code	844
Auditor Name	Fruci & Associates II, PLLC
Auditor Location	Spokane, Washington
Auditor Firm Id	5525
Local Phone Number	462-3637
Entity Interactive Data Current	Yes