# Convert.ToDouble Method (Decimal)

.NET Framework 3.0
Converts the value of the specified Decimal number to an equivalent double-precision floating point number.

Namespace: System
Assembly: mscorlib (in mscorlib.dll)

## Syntax

```public static double ToDouble (
decimal value
)
```
```public static double ToDouble (
Decimal value
)
```
```public static function ToDouble (
value : decimal
) : double
```
```Not applicable.
```

#### Parameters

value

A Decimal number.

#### Return Value

A double-precision floating point number equivalent to the value of value.

## Example

The following code sample illustrates the conversion of a Decimal value to a Double one, using ToDouble.

```public void ConvertDoubleDecimal(double doubleVal){

decimal decimalVal;

// Conversion from double to decimal cannot overflow.
decimalVal = System.Convert.ToDecimal(doubleVal);
System.Console.WriteLine ("{0} as a decimal is: {1}",
doubleVal, decimalVal);

// Decimal to double conversion can overflow.
try {
doubleVal = System.Convert.ToDouble(decimalVal);
System.Console.WriteLine("{0} as a double is: {1}",
decimalVal, doubleVal);
}
catch (System.OverflowException) {
System.Console.WriteLine(
"Overflow in decimal-to-double conversion.");
}

}

```
```public void ConvertDoubleDecimal(double doubleVal)
{
System.Decimal decimalVal;

// Conversion from double to decimal cannot overflow.
decimalVal = System.Convert.ToDecimal(doubleVal);
System.Console.WriteLine("{0} as a decimal is: {1}",
System.Convert.ToString(doubleVal),
System.Convert.ToString(decimalVal));

// Decimal to double conversion can overflow.
try {
doubleVal = System.Convert.ToDouble(decimalVal);
System.Console.WriteLine("{0} as a double is: {1}",
System.Convert.ToString(decimalVal),
System.Convert.ToString(doubleVal));
}
catch (System.OverflowException exp) {
System.Console.WriteLine("Overflow in decimal-to-double conversion.");
}
} //ConvertDoubleDecimal

```

## Platforms

Windows 98, Windows Server 2000 SP4, Windows Millennium Edition, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition

The Microsoft .NET Framework 3.0 is supported on Windows Vista, Microsoft Windows XP SP2, and Windows Server 2003 SP1.

## Version Information

#### .NET Framework

Supported in: 3.0, 2.0, 1.1, 1.0

#### .NET Compact Framework

Supported in: 2.0, 1.0

#### XNA Framework

Supported in: 1.0