# Convert from hexadecimal

> Supported in: Batch, Faster

Inverse of hex. Interprets each pair of characters as a hexadecimal number and converts to the byte representation of the number.

**Expression categories:** Numeric, String

## Declared arguments

* **Expression:** String column to unhex.<br>*Expression\<String>*

**Output type:** *Binary*

## Examples

### Example 1: Base case

**Argument values:**

* **Expression:** `string_hex`

| string\_hex | **Output** |
| ----- | ----- |
| 68656C6C6F | aGVsbG8= |
| 3039 | MDk= |
| FFFFFFFFFFFFCFC7 | ////////z8c= |
| 4C6F6E646F6E | TG9uZG9u |

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### Example 2: Null case

**Argument values:**

* **Expression:** *null*

**Output:** *null*

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