Convert.ToSingle Method (Double)

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

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

public static float ToSingle(
	double value
)

Parameters

value
Type: System.Double

The double-precision floating-point number to convert.

Return Value

Type: System.Single
A single-precision floating-point number that is equivalent to value.
value is rounded using rounding to nearest. For example, when rounded to two decimals, the value 2.345 becomes 2.34 and the value 2.355 becomes 2.36.

The following example converts each element in an array of Double values to a Single value.

double[] values = { Double.MinValue, -1.38e10, -1023.299, -12.98, 
                    0, 9.113e-16, 103.919, 17834.191, Double.MaxValue };
float result;

foreach (double value in values)
{
   result = Convert.ToSingle(value);
   Console.WriteLine("Converted the {0} value '{1}' to the {2} value {3}.", 
                     value.GetType().Name, value, 
                     result.GetType().Name, result);
}                                 
// The example displays the following output: 
//    Converted the Double value '-1.79769313486232E+308' to the Single value -Infinity. 
//    Converted the Double value '-13800000000' to the Single value -1.38E+10. 
//    Converted the Double value '-1023.299' to the Single value -1023.299. 
//    Converted the Double value '-12.98' to the Single value -12.98. 
//    Converted the Double value '0' to the Single value 0. 
//   Converted the Double value '9.113E-16' to the Single value 9.113E-16. 
//    Converted the Double value '103.919' to the Single value 103.919. 
//    Converted the Double value '17834.191' to the Single value 17834.19. 
//    Converted the Double value '1.79769313486232E+308' to the Single value Infinity.

.NET Framework

Supported in: 4.5.2, 4.5.1, 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 8, Silverlight 8.1

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.

Was this page helpful?
(1500 characters remaining)
Thank you for your feedback
Show:
© 2014 Microsoft