# Complex.Magnitude Property

**.NET Framework (current version)**

Gets the magnitude (or absolute value) of a complex number.

**Namespace:**System.Numerics

**Assembly:**System.Numerics (in System.Numerics.dll)

The Magnitude property is equivalent to the absolute value of a complex number. It specifies the distance from the origin (the intersection of the x-axis and the y-axis in the Cartesian coordinate system) to the two-dimensional point represented by a complex number. The absolute value is calculated as follows:

*| a + bi | = *Math.Sqrt*(a * a + b * b) *

If the calculation of the absolute value results in an overflow, this property returns either Double.PositiveInfinity or Double.NegativeInfinity.

The Magnitude and the Phase properties define the position of a point that represents a complex number in the polar coordinate system.

You can instantiate a complex number based on its polar coordinates instead of its Cartesian coordinates by calling the FromPolarCoordinates method.

The following example calculates the absolute value of a complex number and demonstrates that it is equivalent to the value of the Magnitude property.

using System; using System.Numerics; public class Example { public static void Main() { Complex complex1 = new Complex(2.0, 3.0); Console.WriteLine("|{0}| = {1:N2}", complex1, Complex.Abs(complex1)); Console.WriteLine("Equal to Magnitude: {0}", Complex.Abs(complex1).Equals(complex1.Magnitude)); } } // The example displays the following output: // |(2, 3)| = 3.60555127546399 // Equal to Magnitude: True

**Universal Windows Platform**

Available since 8

**.NET Framework**

Available since 4.0

**Portable Class Library**

Supported in: portable .NET platforms

**Silverlight**

Available since 4.0

**Windows Phone**

Available since 8.1