> For the complete documentation index, see [llms.txt](https://docs.hex-rays.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.hex-rays.com/9.0/developer-guide/idc/idc-api-reference/alphabetical-list-of-idc-functions/1580.md).

# sizeof

```
Calculate the size of a type
     type - type to calculate the size of
            can be specified as a typeinfo object (e.g. the result of get_tinfo())
            or a string with C declaration (e.g. "int")
returns: size of the type or -1 if error

long sizeof(typeinfo type);
```


---

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