# llStringLength

*LSL function*

```lsl
integer integer llStringLength(string str);
```

- `string str`: String to measure.

- Returns: `integer`
- Energy: 10

Returns an [integer](https://wiki.secondlife.com/wiki/integer) that is the number of characters in **str**.

```lsl title="How to use" frame="terminal"
integer result = llStringLength("");
```

## Caveats

- The index of the last character is not equal to the string length.
- Character indexes start at zero (the index of the first character is zero).
- [llStringLength](/functions/llStringLength/) returns the number of characters - not bytes - in the string.
- Some functions that accept strings are limited to bytes, not characters.
- LSL-2 uses UTF-8 strings and Mono uses UTF-16; both support multibyte characters.
- To get the number of bytes in a string instead, use the example snippet on [llStringToBase64](/functions/llStringToBase64/) (there is no native LSL function to do this).

## Examples

<details open>
<summary>Example 1</summary>

```lsl
// assumptions:
//    object name: LSLWiki
//    script name: _lslwiki

default
{
    state_entry()
    {
        string HowLongAmI = "123";
        integer strlen = llStringLength(HowLongAmI);
        llOwnerSay( "'" + HowLongAmI + "' has " +(string) strlen + " characters.");
        // The owner of object LSLWiki will hear
        // LSLWiki: '123' has 3 characters.
    }
}
```

</details>

## See also

### Functions

- [llGetListLength](/functions/llGetListLength/)

---

*Source: [LlStringLength](https://wiki.secondlife.com/wiki/LlStringLength) on the Second Life Wiki. Content from the Second Life Wiki article LlStringLength (revision 1218426, 2025-08-21), CC BY-SA 3.0.*

---

From lsl.dev: https://lsl.dev/functions/llStringLength/