# \hbar

The ℏ symbol (Planck constant over two pi, U+210F), written as \hbar in LaTeX math mode.

https://texform.dev/latex/symbols/hbar

## Metadata

| Field | Value |
| --- | --- |
| Topic | [Letter-like symbols](https://texform.dev/latex/topics/letter-like) |
| Packages | base |
| Allowed mode | math |
| Glyph | ℏ |
| Unicode | U+210F PLANCK CONSTANT OVER TWO PI |
| Delimiter | No |

## Syntax

```latex
\hbar
```

Takes no arguments.

## Usage frequency

1.05% of formulas in the measured corpus contain this entry, rank 64 of 474 entries with frequency data.

## In TeXForm

TeXForm parses this entry as a character leaf mapped to U+210F (PLANCK CONSTANT OVER TWO PI).

## See also

- [\\backslash](https://texform.dev/latex/symbols/backslash)
- [\\lnot](https://texform.dev/latex/symbols/lnot)
- [\\neg](https://texform.dev/latex/symbols/neg)