ℎ is the Unicode character PLANCK CONSTANT, code point U+210E (decimal 8462) in the Letterlike Symbols block, added in Unicode 1.1. In HTML write ℎ, and in UTF-8 it is the 3 bytes E2 84 8E.
Codes
| Where | How to write it |
|---|---|
| Code point | U+210E |
| Decimal | 8462 |
| UTF-8 bytes | E2 84 8E |
| UTF-16 (big-endian) | 210E |
| UTF-32 | 0000210E |
| HTML decimal | ℎ |
| HTML hex | ℎ |
| HTML named | ℎ |
| CSS | \210E |
| JavaScript | \u210E |
| JSON | \u210E |
| Python | \u210E |
| Python by name | \N{PLANCK CONSTANT} |
| Java, C# | \u210E |
| Rust, Swift | \u{210E} |
| Go, C, C++ | \u210E |
| URL (percent-encoded) | %E2%84%8E |
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 | PLANCK CONSTANT |
| Code point | U+210E (decimal 8462) |
| Block | Letterlike Symbols (U+2100–U+214F) |
| General category | Ll: Lowercase letter |
| Script | Common |
| Bidirectional class | L: Left-to-right |
| Mirrored in right-to-left text | No |
| First in Unicode version | 1.1 |
Decomposition
PLANCK CONSTANT has a compatibility decomposition (font) to the sequence below. NFKC and NFKD normalisation replace it with that sequence, which can change how text looks, so use them for search, not for storage.
Nearby in Letterlike Symbols
- ℆ U+2106 Cada Una
- ℇ U+2107 Euler Constant
- ℈ U+2108 Scruple
- ℉ U+2109 Degree Fahrenheit
- ℊ U+210A Script Small G
- ℋ U+210B Script Capital H
- ℌ U+210C Black-Letter Capital H
- ℍ U+210D Double-Struck Capital H
- ℏ U+210F Planck Constant Over Two Pi
- ℐ U+2110 Script Capital I
- ℑ U+2111 Black-Letter Capital I
- ℒ U+2112 Script Capital L
- ℓ U+2113 Script Small L
- ℔ U+2114 L B Bar Symbol
- ℕ U+2115 Double-Struck Capital N
- № U+2116 Numero Sign
All 80 characters: Letterlike Symbols.
Official reference
Questions people ask
- What is the HTML code for ℎ?
- Use the named entity ℎ, or ℎ (decimal) or ℎ (hex).
- What is the UTF-8 encoding of U+210E?
- E2 84 8E (hex), 3 bytes. In a URL it is %E2%84%8E.
- How do I write U+210E in JavaScript or Python?
- JavaScript: \u210E. Python: \u210E.
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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