# byte_array.size · Rell standard library · Chromia Docs (concept)

> pure function size(): integer Returns the number of bytes in this byte_array . Since 0.6.0

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/byte_array/size/

FUNCTION

# byte\_array.size

```signature
pure function size(): integer
```

Returns the number of bytes in this `byte_array`.

Since 0.6.0

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/byte_array/size.html)Generated API reference, mirrored from the live docs