# base64Decode {#base64decode}

**Parent topic:**[Functions](../../Functions/category.md)

## Syntax {#syntax}

`base64Decode(X)`

## Arguments {#arguments}

**X** is a STRING scalar or vector.

## Details {#details}

Decode *X* from Base64 format to binary data.

**Return value**: a BLOB scalar or vector.

## Examples {#examples}

```
base64Decode(base64Encode(`hello))
hello

base64Decode(base64Encode(`hello`world))
["hello","world"]
```

Related function: [base64Ebcode](base64Encode.md)

