---
{
"title": "bit_length",
"language": "en"
}
---

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# bit_length
## description
### Syntax

`INT bit_length(VARCHAR str)`

Return length of argument in bits.

## example

```
MySQL> select bit_length("doris");
+---------------------+
| bit_length('doris') |
+---------------------+
|                  40 |
+---------------------+

MySQL [test]> select bit_length("hello world");
+---------------------------+
| bit_length('hello world') |
+---------------------------+
|                        88 |
+---------------------------+
```

## keyword

    bit_length