U+2160

Roman numeral oneⅠ

Roman numeral one is a monochrome text character from the Unicode Number Forms 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", "roman".

Quick facts

Unicode
U+2160
Decimal
8544
Hex
0x2160
Octal
0o20540

Unicode identity

FormatValueCopy
Code pointOfficial Unicode notationU+2160
Official nameUnicodeData.txt, Unicode 18.0.0ROMAN NUMERAL ONE
DecimalBase 108544
HexadecimalBase 160x2160
OctalBase 80o20540
BinaryBase 20010000101100000
General categoryNumber, letterNl
Unicode blockU+2150–U+218FNumber Forms
PlaneBasic Multilingual Plane (BMP, Plane 0)

HTML & CSS

FormatValueCopy
HTML entity (decimal)Ⅰ
HTML entity (hex)Ⅰ
CSS content escapeUse inside content: "…"\2160
URL encodedPercent-encoded UTF-8%E2%85%A0

Programming languages

FormatValueCopy
JavaScript / TypeScript\u2160
JSONUTF-16 surrogate pairs\u2160
Python\u2160
Java / C# / Kotlin\u2160

Byte encodings

FormatValueCopy
UTF-83 bytesE2 85 A0
UTF-16 (BE)2160
UTF-32 (BE)00002160

How to type Roman numeral one

  • Windows

    Hold Alt and type +2160 with the hex numeric keypad option enabled, or type 2160 then press Alt+X in Word and most Office apps.

  • macOS

    Enable the Unicode Hex Input keyboard, hold Option, and type 2160. Or open Character Viewer (Control+Command+Space) and search "Roman numeral one".

  • Linux

    Press Ctrl+Shift+U, type 2160, 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: Ⅰ in HTML, \2160 in CSS, and \u2160 in JavaScript.

Official Unicode reference

Character name
ROMAN NUMERAL ONE
Block
Number Forms (U+2150–U+218F)
General category
Nl — Number, letter

Data from the Unicode Character Database, version 18.0.0. See the official code chart for the Number Forms block: U2150.pdf (PDF, unicode.org).

Frequently asked questions

How do I copy the Roman numeral one symbol?

Click the Copy button at the top of this page, or select Ⅰ 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 Roman numeral one?

Roman numeral one is U+2160 (decimal 8544, hexadecimal 0x2160, octal 0o20540). It lives in the Number Forms block (U+2150–U+218F) of the Basic Multilingual Plane (BMP, Plane 0).

What is the official Unicode name of Roman numeral one?

The Unicode Standard (version 18.0.0) names this character "ROMAN NUMERAL ONE". Its General_Category is Nl (Number, letter).

What is the HTML code for Roman numeral one?

Use Ⅰ or Ⅰ. In CSS, use content: "\2160".

How do I type Roman numeral one in code?

JavaScript: "\u2160". Python: "\u2160". JSON and Java: "\u2160". The UTF-8 byte sequence is E2 85 A0.

Is Roman numeral one an emoji?

No. Roman numeral 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