# Convert.ToDecimal Method (Double)

.NET Framework (current version)

Converts the value of the specified double-precision floating-point number to an equivalent decimal number.

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

## Syntax

```Public Shared Function ToDecimal (
value As Double
) As Decimal
```

#### Parameters

value
Type: System.Double

The double-precision floating-point number to convert.

#### Return Value

Type: System.Decimal

A decimal number that is equivalent to value.

## Exceptions

Exception Condition
OverflowException

value is greater than Decimal.MaxValue or less than Decimal.MinValue.

## Remarks

The Decimal value returned by this method contains a maximum of 15 significant digits. If the value parameter contains more than 15 significant digits, it is rounded using rounding to nearest. The following example illustrates how the Convert.ToDecimal(Double) method uses rounding to nearest to return a Decimal value with 15 significant digits.

```Console.WriteLine(Convert.ToDecimal(123456789012345500.12R))   ' Displays 123456789012346000
Console.WriteLine(Convert.ToDecimal(123456789012346500.12R))   ' Displays 123456789012346000

Console.WriteLine(Convert.ToDecimal(10030.12345678905R))       ' Displays 10030.123456789
Console.WriteLine(Convert.ToDecimal(10030.12345678915R))       ' Displays 10030.1234567892
```

## Examples

The following example converts a Double value to a Decimal value.

```Public Sub ConvertDoubleDecimal(ByVal decimalVal As Decimal)

Dim doubleVal As Double

' Decimal to Double conversion cannot overflow.
doubleVal = System.Convert.ToDouble(decimalVal)
System.Console.WriteLine("{0} as a Double is: {1}", _
decimalVal, doubleVal)

' Conversion from Double to Decimal can overflow.
Try
decimalVal = System.Convert.ToDecimal(doubleVal)
System.Console.WriteLine("{0} as a Decimal is: {1}", _
doubleVal, decimalVal)
Catch exception As System.OverflowException
System.Console.WriteLine( _
"Overflow in Double-to-Decimal conversion.")
End Try

End Sub
```

## Version Information

Universal Windows Platform
Available since 8
.NET Framework
Available since 1.1
Portable Class Library
Supported in: portable .NET platforms
Silverlight
Available since 2.0
Windows Phone Silverlight
Available since 7.0
Windows Phone
Available since 8.1