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Convert.ToDouble Method (Int32)

Converts the value of the specified 32-bit signed integer to an equivalent double-precision floating-point number.

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

public static double ToDouble(
	int value


Type: System.Int32

The 32-bit signed integer to convert.

Return Value

Type: System.Double
A double-precision floating-point number that is equivalent to value.

The following example converts an Int32 value to a Double value.

		public void ConvertDoubleInt(double doubleVal) {
			int     intVal = 0;
			// Double to int conversion can overflow. 
			try {
				intVal = System.Convert.ToInt32(doubleVal);
				System.Console.WriteLine("{0} as an int is: {1}",
					doubleVal, intVal);
			catch (System.OverflowException) {
					"Overflow in double-to-int conversion.");

			// Int to double conversion cannot overflow.
			doubleVal = System.Convert.ToDouble(intVal);
			System.Console.WriteLine("{0} as a double is: {1}",
				intVal, doubleVal);

.NET Framework

Supported in: 4.5, 4, 3.5, 3.0, 2.0, 1.1, 1.0

.NET Framework Client Profile

Supported in: 4, 3.5 SP1

Portable Class Library

Supported in: Portable Class Library

.NET for Windows Store apps

Supported in: Windows 8

.NET for Windows Phone apps

Supported in: Windows Phone 8.1, Windows Phone Silverlight 8.1, Windows Phone Silverlight 8

Windows Phone 8.1, Windows Phone 8, Windows 8.1, Windows Server 2012 R2, Windows 8, Windows Server 2012, Windows 7, Windows Vista SP2, Windows Server 2008 (Server Core Role not supported), Windows Server 2008 R2 (Server Core Role supported with SP1 or later; Itanium not supported)

The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.

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