# W3cubDocs

/LaTeX

### \settoheight

Synopsis:

```\settoheight{len}{text}
```

Sets the length len to the height of box that LaTeX gets on typesetting the `text` argument. The length name len must begin with a backslash, `\`.

This will show how high the characters go.

```\newlength{\alphabetheight}
\settoheight{\alphabetheight}{abcdefghijklmnopqrstuvwxyz}
\the\alphabetheight
```

If no such length len has been declared with `\newlength`, if for example you mistype as `\settoheight{\aplhabetheight}{abc...}`, then you get something like ‘Undefined control sequence. <argument> \alphabetheight’. If you leave the backslash out of len, as in `\settoheight{alphabetheight}{...}` then you get something like ‘Missing number, treated as zero. <to be read again> \setbox’.