π is the Unicode character LINEAR A SIGN A357, code point U+10691 (decimal 67217) in the Linear A block, added in Unicode 7.0. In HTML write 𐚑, and in UTF-8 it is the 4 bytes F0 90 9A 91.
Codes
| Where | How to write it |
|---|---|
| Code point | U+10691 |
| Decimal | 67217 |
| UTF-8 bytes | F0 90 9A 91 |
| UTF-16 (big-endian) | D801 DE91 |
| UTF-32 | 00010691 |
| HTML decimal | 𐚑 |
| HTML hex | 𐚑 |
| CSS | \10691 |
| JavaScript | \u{10691} or \uD801\uDE91 |
| JSON | \uD801\uDE91 |
| Python | \U00010691 |
| Python by name | \N{LINEAR A SIGN A357} |
| Java, C# | \uD801\uDE91 |
| Rust, Swift | \u{10691} |
| Go, C, C++ | \U00010691 |
| URL (percent-encoded) | %F0%90%9A%91 |
JavaScript and JSON strings store text as UTF-16, so this character takes two code units (a surrogate pair) and "π".length is 2. Python 3 strings count code points, so its length there is 1.
Properties
| Property | Value |
|---|---|
| Name | LINEAR A SIGN A357 |
| Code point | U+10691 (decimal 67217) |
| Block | Linear A (U+10600βU+1077F) |
| General category | Lo: Other letter |
| Script | Linear A |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 7.0 |
Nearby in Linear A
- π U+10689 Linear A Sign A349
- π U+1068A Linear A Sign A350
- π U+1068B Linear A Sign A351
- π U+1068C Linear A Sign A352
- π U+1068D Linear A Sign A353
- π U+1068E Linear A Sign A354
- π U+1068F Linear A Sign A355
- π U+10690 Linear A Sign A356
- π U+10692 Linear A Sign A358
- π U+10693 Linear A Sign A359
- π U+10694 Linear A Sign A360
- π U+10695 Linear A Sign A361
- π U+10696 Linear A Sign A362
- π U+10697 Linear A Sign A363
- π U+10698 Linear A Sign A364
- π U+10699 Linear A Sign A365
All 340 characters: Linear A.
Official reference
Questions people ask
- What is the HTML code for π?
- Use 𐚑 (decimal) or 𐚑 (hex).
- What is the UTF-8 encoding of U+10691?
- F0 90 9A 91 (hex), 4 bytes. In a URL it is %F0%90%9A%91.
- How do I write U+10691 in JavaScript or Python?
- JavaScript: \u{10691} or \uD801\uDE91. Python: \U00010691.
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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