ISO/IEC 10646:2011
(Main)Information technology — Universal Coded Character Set (UCS)
Information technology — Universal Coded Character Set (UCS)
ISO/IEC 10646:2011 specifies the Universal Coded Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers over 109 000 characters from the world's scripts. ISO/IEC 10646:2011: specifies the architecture of ISO/IEC 10646; defines terms used ISO/IEC 10646; describes the general structure of the UCS codespace; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace; specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. The UCS is an encoding system different from that specified in ISO/IEC 2022. ISO/IEC 10646:2011 specifies the method to designate UCS from ISO/IEC 2022. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text, ISO/IEC 10646:2011 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646:2011 has been widely adopted in new Internet protocols and implemented in modern operating systems and computer languages.
Technologies de l'information — Jeu universel de caractères codés (JUC)
General Information
- Status
- Withdrawn
- Publication Date
- 09-Mar-2011
- Withdrawal Date
- 09-Mar-2011
- Technical Committee
- ISO/IEC JTC 1/SC 2 - Coded character sets
- Drafting Committee
- ISO/IEC JTC 1/SC 2/WG 2 - Universal coded character set
- Current Stage
- 9599 - Withdrawal of International Standard
- Start Date
- 21-May-2012
- Completion Date
- 12-Feb-2026
Relations
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 09-Feb-2026
- Effective Date
- 25-Dec-2010
- Effective Date
- 25-Dec-2010
- Effective Date
- 10-Jul-2010
- Effective Date
- 15-Apr-2008
- Effective Date
- 15-Apr-2008
- Effective Date
- 15-Apr-2008
- Revises
ISO/IEC 10646:2003 - Information technology — Universal Multiple-Octet Coded Character Set (UCS) - Effective Date
- 15-Apr-2008
- Effective Date
- 15-Apr-2008
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Frequently Asked Questions
ISO/IEC 10646:2011 is a standard published by the International Organization for Standardization (ISO). Its full title is "Information technology — Universal Coded Character Set (UCS)". This standard covers: ISO/IEC 10646:2011 specifies the Universal Coded Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers over 109 000 characters from the world's scripts. ISO/IEC 10646:2011: specifies the architecture of ISO/IEC 10646; defines terms used ISO/IEC 10646; describes the general structure of the UCS codespace; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace; specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. The UCS is an encoding system different from that specified in ISO/IEC 2022. ISO/IEC 10646:2011 specifies the method to designate UCS from ISO/IEC 2022. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text, ISO/IEC 10646:2011 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646:2011 has been widely adopted in new Internet protocols and implemented in modern operating systems and computer languages.
ISO/IEC 10646:2011 specifies the Universal Coded Character Set (UCS). It is applicable to the representation, transmission, interchange, processing, storage, input and presentation of the written form of the languages of the world as well as additional symbols. It covers over 109 000 characters from the world's scripts. ISO/IEC 10646:2011: specifies the architecture of ISO/IEC 10646; defines terms used ISO/IEC 10646; describes the general structure of the UCS codespace; specifies the Basic Multilingual Plane (BMP) of the UCS; specifies supplementary planes of the UCS: the Supplementary Multilingual Plane (SMP), the Supplementary Ideographic Plane (SIP), the Tertiary Ideographic Plane (TIP), and the Supplementary Special-purpose Plane (SSP); defines a set of graphic characters used in scripts and the written form of languages on a world-wide scale; specifies the names for the graphic characters and format characters of the BMP, SMP, SIP, TIP, SSP and their coded representations within the UCS codespace; specifies the coded representations for control characters and private use characters; specifies three encoding forms of the UCS: UTF-8, UTF-16, and UTF-32; specifies seven encoding schemes of the UCS: UTF-8, UTF-16, UTF-16BE, UTF-16LE, UTF-32, UTF-32BE, and UTF-32LE; specifies the management of future additions to this coded character set. The UCS is an encoding system different from that specified in ISO/IEC 2022. ISO/IEC 10646:2011 specifies the method to designate UCS from ISO/IEC 2022. A graphic character will be assigned only one code point in the standard, located either in the BMP or in one of the supplementary planes. By defining a consistent way of encoding multilingual text, ISO/IEC 10646:2011 enables the exchange of data internationally. The information technology industry gains data stability, greater global interoperability and data interchange. ISO/IEC 10646:2011 has been widely adopted in new Internet protocols and implemented in modern operating systems and computer languages.
ISO/IEC 10646:2011 is classified under the following ICS (International Classification for Standards) categories: 35.040 - Information coding; 35.040.10 - Coding of character sets. The ICS classification helps identify the subject area and facilitates finding related standards.
ISO/IEC 10646:2011 has the following relationships with other standards: It is inter standard links to EN ISO/IEC 19788-3:2013, EN ISO/IEC 19788-5:2014, EN 15969-1:2011, EN ISO 19118:2011, ISO/IEC 10646:2003/Amd 7:2010, ISO/IEC 10646:2003/Amd 6:2009, ISO/IEC 10646:2012, ISO/IEC 10646:2003/Amd 4:2008, ISO/IEC 10646:2003/Amd 2:2006, ISO/IEC 10646:2003/Amd 5:2008, ISO/IEC 10646:2003, ISO/IEC 10646:2003/Amd 1:2005. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
ISO/IEC 10646:2011 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
INTERNATIONAL ISO/IEC
STANDARD 10646
Second edition
2011-03-15
Information technology — Universal
Coded Character Set (UCS)
Technologies de l'information — Jeu universel de caractères codés
(JUC)
Reference number
©
ISO/IEC 2011
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address given below.
This CD-ROM contains:
1) the publication ISO/IEC 10646:2011 in portable document format (PDF), which can be viewed using
Adobe® Acrobat® Reader;
2) text files containing lists of
i) alphabetically sorted list of character names,
ii) source references for CJK Compatibility Ideographs, CJK Unified Ideographs, and pictographic
symbols,
iii) Hangul syllable names
iv) JIS2004 IDEOGRAPHIC EXTENSION and IICORE CJK collections, and
v) Named UCS Sequence Identifiers (NUSI).
Adobe and Acrobat are trademarks of Adobe Systems Incorporated.
This second edition cancels and replaces the first edition (ISO/IEC 10646:2003), which has been technically
revised. It also incorporates the Amendments ISO/IEC 10646:2003/Amd.1:2005,
ISO/IEC 10646:2003/Amd.2:2006, ISO/IEC 10646:2003/Amd.3:2008, ISO/IEC 10646:2003/Amd.4:2008,
ISO/IEC 10646:2003/Amd.5:2008, ISO/IEC 10646:2003/Amd.6:2009, and ISO/IEC 10646:2003/Amd.7:2010.
© ISO/IEC 2011
All rights reserved. Unless required for installation or otherwis
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