# Sandbox.SandboxSystemExtensions.ToDouble

```csharp
static float ToDouble(string str, float Default = 0)
```

Convert to `T:System.Double`, if not then return `Default`.

### Parameters

- `str` (`string`)
- `Default` (`float`), default `0`

### Returns

`float`

Declared in [Sandbox.SandboxSystemExtensions](/api/Sandbox.SandboxSystemExtensions).
Assembly: `Sandbox.System`.