⇑ is the Unicode character UPWARDS DOUBLE ARROW, code point U+21D1 (decimal 8657) in the Arrows block, added in Unicode 1.1. In HTML write ⇑, and in UTF-8 it is the 3 bytes E2 87 91.
Codes
| Where | How to write it |
|---|---|
| Code point | U+21D1 |
| Decimal | 8657 |
| UTF-8 bytes | E2 87 91 |
| UTF-16 (big-endian) | 21D1 |
| UTF-32 | 000021D1 |
| HTML decimal | ⇑ |
| HTML hex | ⇑ |
| HTML named | ⇑ ⇑ ⇑ |
| CSS | \21D1 |
| JavaScript | \u21D1 |
| JSON | \u21D1 |
| Python | \u21D1 |
| Python by name | \N{UPWARDS DOUBLE ARROW} |
| Java, C# | \u21D1 |
| Rust, Swift | \u{21D1} |
| Go, C, C++ | \u21D1 |
| URL (percent-encoded) | %E2%87%91 |
JavaScript and JSON strings store text as UTF-16, so this character is one code unit long. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | UPWARDS DOUBLE ARROW |
| Code point | U+21D1 (decimal 8657) |
| Block | Arrows (U+2190–U+21FF) |
| General category | So: Other symbol |
| Script | Common |
| Bidirectional class | ON: Other neutral |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Nearby in Arrows
- ⇉ U+21C9 Rightwards Paired Arrows
- ⇊ U+21CA Downwards Paired Arrows
- ⇋ U+21CB Leftwards Harpoon Over Rightwards Harpoon
- ⇌ U+21CC Rightwards Harpoon Over Leftwards Harpoon
- ⇍ U+21CD Leftwards Double Arrow With Stroke
- ⇎ U+21CE Left Right Double Arrow With Stroke
- ⇏ U+21CF Rightwards Double Arrow With Stroke
- ⇐ U+21D0 Leftwards Double Arrow
- ⇒ U+21D2 Rightwards Double Arrow
- ⇓ U+21D3 Downwards Double Arrow
- ⇔ U+21D4 Left Right Double Arrow
- ⇕ U+21D5 Up Down Double Arrow
- ⇖ U+21D6 North West Double Arrow
- ⇗ U+21D7 North East Double Arrow
- ⇘ U+21D8 South East Double Arrow
- ⇙ U+21D9 South West Double Arrow
All 112 characters: Arrows.
Official reference
Questions people ask
- What is the HTML code for ⇑?
- Use the named entity ⇑, or ⇑ (decimal) or ⇑ (hex).
- What is the UTF-8 encoding of U+21D1?
- E2 87 91 (hex), 3 bytes. In a URL it is %E2%87%91.
- How do I write U+21D1 in JavaScript or Python?
- JavaScript: \u21D1. Python: \u21D1.
Source
Unicode Character Database 18.0.0 (Unicode License v3); HTML entity names from the WHATWG HTML Standard (CC BY 4.0). The encodings above are computed from the code point and checked against Python's encoders. How the character looks depends on your fonts.
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