U+2081

Subscript one₁

Subscript one is a monochrome text character from the Unicode Superscripts and Subscripts block, listed here under Numbers. Copy it with one click, or use the hex, octal, decimal and HTML entity codes below to embed it in web pages, code, and documents. It is often searched for as "number", "1", "index".

Quick facts

Unicode
U+2081
Decimal
8321
Hex
0x2081
Octal
0o20201

Unicode identity

FormatValueCopy
Code pointOfficial Unicode notationU+2081
Official nameUnicodeData.txt, Unicode 18.0.0SUBSCRIPT ONE
Unicode 1.0 nameLegacy aliasSUBSCRIPT DIGIT ONE
DecimalBase 108321
HexadecimalBase 160x2081
OctalBase 80o20201
BinaryBase 20010000010000001
General categoryNumber, otherNo
Unicode blockU+2070–U+209FSuperscripts and Subscripts
PlaneBasic Multilingual Plane (BMP, Plane 0)

HTML & CSS

FormatValueCopy
HTML entity (decimal)₁
HTML entity (hex)₁
CSS content escapeUse inside content: "…"\2081
URL encodedPercent-encoded UTF-8%E2%82%81

Programming languages

FormatValueCopy
JavaScript / TypeScript\u2081
JSONUTF-16 surrogate pairs\u2081
Python\u2081
Java / C# / Kotlin\u2081

Byte encodings

FormatValueCopy
UTF-83 bytesE2 82 81
UTF-16 (BE)2081
UTF-32 (BE)00002081

How to type Subscript one

  • Windows

    Hold Alt and type +2081 with the hex numeric keypad option enabled, or type 2081 then press Alt+X in Word and most Office apps.

  • macOS

    Enable the Unicode Hex Input keyboard, hold Option, and type 2081. Or open Character Viewer (Control+Command+Space) and search "Subscript one".

  • Linux

    Press Ctrl+Shift+U, type 2081, then press Space or Enter in GTK apps. IBus and most terminals support the same sequence.

  • HTML, CSS & code

    Paste the character directly, or use the escapes above: ₁ in HTML, \2081 in CSS, and \u2081 in JavaScript.

Official Unicode reference

Character name
SUBSCRIPT ONE
Unicode 1.0 name
SUBSCRIPT DIGIT ONE
Block
Superscripts and Subscripts (U+2070–U+209F)
General category
No — Number, other

Data from the Unicode Character Database, version 18.0.0. See the official code chart for the Superscripts and Subscripts block: U2070.pdf (PDF, unicode.org).

Frequently asked questions

How do I copy the Subscript one symbol?

Click the Copy button at the top of this page, or select ₁ and press Ctrl+C (Cmd+C on Mac). It is plain Unicode text, so it pastes into documents, chats, code, and design tools.

What is the Unicode code point for Subscript one?

Subscript one is U+2081 (decimal 8321, hexadecimal 0x2081, octal 0o20201). It lives in the Superscripts and Subscripts block (U+2070–U+209F) of the Basic Multilingual Plane (BMP, Plane 0).

What is the official Unicode name of Subscript one?

The Unicode Standard (version 18.0.0) names this character "SUBSCRIPT ONE"; its Unicode 1.0 name was "SUBSCRIPT DIGIT ONE". Its General_Category is No (Number, other).

What is the HTML code for Subscript one?

Use ₁ or ₁. In CSS, use content: "\2081".

How do I type Subscript one in code?

JavaScript: "\u2081". Python: "\u2081". JSON and Java: "\u2081". The UTF-8 byte sequence is E2 82 81.

Is Subscript one an emoji?

No. Subscript one is a text symbol and renders as a monochrome glyph in the current font. Some platforms may offer an emoji variant when U+FE0F is appended.

Related symbols in Numbers

View all numbers