Kangxi Radicals (Unicode block)

Kangxi Radicals
Kangxi Radicals
Range	U+2F00..U+2FDF; (224 code points)
Plane	BMP
Scripts	Han
Symbol sets	CJK Radical
Assigned	214 code points
Unused	10 reserved code points
Source standards	CNS 11643-1992
Unicode version history
3.0 (1999)	214 (+214)
Unicode documentation
	Code chart?∣?Web page
	Note:

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Kangxi Radicals is a Unicode block. In version 3.0 (1999), this separate Kangxi Radicals block was introduced which encodes the 214 radicals in sequence, at U+2F00–2FD5. These are specific code points intended to represent the radical qua radical, as opposed to the character consisting of the unaugmented radical; thus, U+2F00 represents radical 1 while U+4E00 represents the character yī meaning "one". In addition, the CJK Radicals Supplement block (2E80–2EFF) was introduced, encoding alternative (often positional) forms taken by Kangxi radicals as they appear within specific characters. For example, ? "CJK RADICAL CLIFF" (U+2E81) is a variant of ? radical 27 (U+2F1A), itself identical in shape to the character consisting of unaugmented radical 27, 厂 "cliff" (U+5382).

The Unicode standard encoded 20,992 characters in version 1.0.1 (1992) in the CJK Unified Ideographs block (U+4E00–9FFF). This standard followed the Kangxi order of radicals (radical 1 at U+4E00, radical 214 at U+9FA0) but did not encode all characters found in the Kangxi dictionary. Individual characters were listed based on their Kangxi radical and number of additional strokes, e.g. U+5382 厂, the unaugmented radical 27 meaning "cliff" is listed under "27.0", while U+5383 to U+5386 are listed under "27.2" as they all consist of radical 27 plus two additional strokes. More characters were added in later versions, adding "CJK Unified Ideographs Extensions" A, B, C, D, E and F as of Unicode 12.1 (2019) with further additions planned for Unicode 13.0. Within each "Extension", characters are also ordered by Kangxi radical and additional strokes. The Unicode Consortium maintains the "Unihan Database", with a Radical-Stroke-Index. The Unicode Common Locale Data Repository provides no official collation (sort order) rule for Unicode CJK characters (short of sorting characters by code point);^[3] such collation rules as there are language-specific (such as JIS X 0208 for Japanese kanji) and do not include any of the CJK Unified Ideographs Extension characters.

Chart

Kangxi Radicals^[1]^[2] Official Unicode Consortium code chart (PDF)
	0	1	2	3	4	5	6	7	8	9	A	B	C	D	E	F
U+2F0x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F1x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F2x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F3x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F4x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F5x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F6x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F7x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F8x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2F9x	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2FAx	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2FBx	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2FCx	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?	?
U+2FDx	?	?	?	?	?	?
Notes 1.^ As of Unicode version 16.0 2.^ Grey areas indicate non-assigned code points

History

The following Unicode-related documents record the purpose and process of defining specific characters in the Kangxi Radicals block:

Version	Final code points^[a]	Count	L2 ID	WG2 ID	IRG ID	Document
3.0	U+2F00..2FD5	214	L2/97-017	N1182	N202	Proposal to add 210 KangXi Radicals and 3 HANGZHOU Numbers in BMP for compatibility, 2025-08-05
				N1203		Umamaheswaran, V. S.; Ksar, Mike (2025-08-05), "6.1.11", Unconfirmed minutes of SC2/WG2 Meeting 27, Geneva
				N1303 (html, doc)		Umamaheswaran, V. S.; Ksar, Mike (2025-08-05), Minutes of Meeting 29, Tokyo
			L2/97-030	N1503 (pdf, doc)		Umamaheswaran, V. S.; Ksar, Mike (2025-08-05), "8.10", Unconfirmed Minutes of WG 2 Meeting #32, Singapore; 2025-08-05--24
					N449	Jenkins, John; Wang, Xiaoming (2025-08-05), Naming of Kangxi Radicals
			L2/97-154	N1609	N479	Zhang, Zhoucai (2025-08-05), Kangxi Radicals
			L2/97-284	N1629	N486	Zhang, Zhoucai (2025-08-05), Kangxi Radicals and Hangzhou Numerals
			L2/98-112	N1629R		Zhang, Zhoucai (2025-08-05), Kangxi Radicals, Hangzhou Numerals
			L2/98-332	N1923		Combined PDAM registration and consideration ballot on WD for ISO/IEC 10646-1/Amd. 15, AMENDMENT 15: Kang Xi radicals and CJK radicals supplement, 2025-08-05
			L2/99-010	N1903 (pdf, html, doc)		Umamaheswaran, V. S. (2025-08-05), "10.4", Minutes of WG 2 meeting 35, London, U.K.; 2025-08-05--25
					N616	Jenkins, John (2025-08-05), KangXi Radical Names
			L2/99-073.1	N1969		Irish Comments on SC 2 N 3213, 2025-08-05
			L2/99-073	N1968 (html, doc)		Summary of Voting on SC 2 N 3213, PDAM ballot on WD for 10646-1/Amd. 15: Kang Xi radicals and CJK radicals supplement, 2025-08-05
			L2/99-119			Text for FPDAM ballot of ISO/IEC 10646, Amd. 15 - Kang Xi radicals and CJK radicals supplement, 2025-08-05
			L2/99-232	N2003		Umamaheswaran, V. S. (2025-08-05), Minutes of WG 2 meeting 36, Fukuoka, Japan, 2025-08-05--15
			L2/99-252	N2065		Summary of Voting on SC 2 N 3311, ISO 10646-1/FPDAM 15 - Kang Xi radicals and CJK radicals supplement, 2025-08-05
			L2/99-300	N2122		Paterson, Bruce (2025-08-05), Revised Text for FDAM ballot of ISO/IEC 10646-1/FDAM 15, AMENDMENT 15: Kang Xi radicals and CJK radicals supplement
			L2/00-010	N2103		Umamaheswaran, V. S. (2025-08-05), Minutes of WG 2 meeting 37, Copenhagen, Denmark: 2025-08-05—16
			L2/00-044			Summary of FDAM voting: ISO 10646 Amendment 15: Kang Xi radicals and CJK radicals supplement, 2025-08-05
			L2/02-436	N2534	N955	IRG Radical Classification, 2025-08-05
			L2/03-362	N2659	N981	Cook, Richard (2025-08-05), Defect Report on Kangxi Radical Forms
			L2/04-423	N2882		Cook, Richard (2025-08-05), Defect Report on Kangxi Radical Forms, revisited
			L2/19-175			Jenkins, John H. (2025-08-05), Glyph for U+2F2A KANGXI RADICAL LAME
				N5079	N2391	Jenkins, John H. (2025-08-05), Glyph for U+2F2A KANGXI RADICAL LAME
			L2/19-122			Moore, Lisa (2025-08-05), "B.4.3 Glyph for U+2F2A KANGXI RADICAL LAME", UTC #159 Minutes
			L2/19-237	N5068		Editorial Report on Miscellaneous Issues (meeting IRG#52) [Affects U+2F2A], 2025-08-05
				N5122		"M68.12", Unconfirmed minutes of WG 2 meeting 68, 2025-08-05
			L2/19-212R	N5069R		Lunde, Ken (2025-08-05), Proposal to change the font for the CJK Radicals Supplement & Kangxi Radicals blocks
			L2/19-270			Moore, Lisa (2025-08-05), "B.4.4 Proposal to change the font for the CJK Radicals Supplement and Kangxi Radicals blocks", UTC #160 Minutes
^ Proposed code points and characters names may differ from final code points and names

References

^ "Unicode character database". The Unicode Standard. Retrieved 2025-08-05.
^ "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2025-08-05.
^ Ken Whistler, Markus Scherer, Unicode Collation Algorithm, Unicode Technical Standard #10, version 7.0.0 (2014).

[final-4] Proposed code points and characters names may differ from final code points and names

[1] "Unicode character database". The Unicode Standard. Retrieved 2025-08-05.

[2] "Enumerated Versions of The Unicode Standard". The Unicode Standard. Retrieved 2025-08-05.

[3] Ken Whistler, Markus Scherer, Unicode Collation Algorithm, Unicode Technical Standard #10, version 7.0.0 (2014).

[cnote_a_grp_version] 
As of version 16.0

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