CJK Compatibility Unicode Block

The Unicode block "CJK Compatibility" is a specialized segment within the expansive Unicode standard, dedicated to addressing the needs of compatibility between existing character sets and the unified CJK (Chinese, Japanese, Korean) ideographic representations. Spanning the code points from U+3300 to U+33FF, this block contains a collection of characters that primarily serve as compatibility forms for characters already included in the primary CJK Unified Ideographs block. These characters facilitate text interchange and data migration among legacy systems that predated modern Unicode, ensuring that older documents can still be accurately displayed and processed in contemporary software environments without data loss or misrepresentation.

Each character in the CJK Compatibility block holds a unique role in acting as a bridge between older encoding systems, such as those used in specific regional or national standards, and the universal representation provided by Unicode. This block includes a diverse array of symbols, such as square symbols that represent unit abbreviations (e.g., "㎖" for milliliters), and other characters standardized for historical reasons. By preserving these compatibility forms, the Unicode Consortium ensures a smoother transition for digital texts moving into the Unicode realm, particularly in East Asian contexts where vast character sets and intricate text styles have long been a staple of written communication. This ultimately underpins the global interoperability and future-proofing that are the hallmarks of the Unicode Standard.

View a range of fonts that support the CJK Compatibility block.

Below you will find all the characters that are in the CJK Compatibility unicode block. Currently there are 256 characters in this block.