U+21D1

Up double arrow⇑

Up double arrow is a monochrome text character from the Unicode Arrows block, listed here under Arrows. 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.

Quick facts

Unicode
U+21D1
Decimal
8657
Hex
0x21D1
Octal
0o20721

Unicode identity

FormatValueCopy
Code pointOfficial Unicode notationU+21D1
Official nameUnicodeData.txt, Unicode 18.0.0UPWARDS DOUBLE ARROW
Unicode 1.0 nameLegacy aliasUP DOUBLE ARROW
DecimalBase 108657
HexadecimalBase 160x21D1
OctalBase 80o20721
BinaryBase 20010000111010001
General categorySymbol, otherSo
Unicode blockU+2190–U+21FFArrows
PlaneBasic Multilingual Plane (BMP, Plane 0)

HTML & CSS

FormatValueCopy
HTML entity (decimal)⇑
HTML entity (hex)⇑
HTML entity (named)⇑
CSS content escapeUse inside content: "…"\21D1
URL encodedPercent-encoded UTF-8%E2%87%91

Programming languages

FormatValueCopy
JavaScript / TypeScript\u21D1
JSONUTF-16 surrogate pairs\u21D1
Python\u21D1
Java / C# / Kotlin\u21D1

Byte encodings

FormatValueCopy
UTF-83 bytesE2 87 91
UTF-16 (BE)21D1
UTF-32 (BE)000021D1

How to type Up double arrow

  • Windows

    Hold Alt and type +21D1 with the hex numeric keypad option enabled, or type 21D1 then press Alt+X in Word and most Office apps.

  • macOS

    Enable the Unicode Hex Input keyboard, hold Option, and type 21D1. Or open Character Viewer (Control+Command+Space) and search "Up double arrow".

  • Linux

    Press Ctrl+Shift+U, type 21d1, 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: ⇑ in HTML, \21D1 in CSS, and \u21D1 in JavaScript.

Official Unicode reference

Character name
UPWARDS DOUBLE ARROW
Unicode 1.0 name
UP DOUBLE ARROW
Block
Arrows (U+2190–U+21FF)
General category
So — Symbol, other

Data from the Unicode Character Database, version 18.0.0. See the official code chart for the Arrows block: U2190.pdf (PDF, unicode.org).

Frequently asked questions

How do I copy the Up double arrow symbol?

Click the Copy button at the top of this page, or select ⇑ 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 Up double arrow?

Up double arrow is U+21D1 (decimal 8657, hexadecimal 0x21D1, octal 0o20721). It lives in the Arrows block (U+2190–U+21FF) of the Basic Multilingual Plane (BMP, Plane 0).

What is the official Unicode name of Up double arrow?

The Unicode Standard (version 18.0.0) names this character "UPWARDS DOUBLE ARROW"; its Unicode 1.0 name was "UP DOUBLE ARROW". Its General_Category is So (Symbol, other).

What is the HTML code for Up double arrow?

Use ⇑ or ⇑, or the named entity ⇑. In CSS, use content: "\21D1".

How do I type Up double arrow in code?

JavaScript: "\u21D1". Python: "\u21D1". JSON and Java: "\u21D1". The UTF-8 byte sequence is E2 87 91.

Is Up double arrow an emoji?

No. Up double arrow 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 Arrows

View all arrows