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Math.Log10 Method

Returns the base 10 logarithm of a specified number.

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

static member Log10 : 
        d:float -> float 


Type: System.Double
A number whose logarithm is to be found.

Return Value

Type: System.Double
One of the values in the following table.

d parameter

Return value


The base 10 log of d; that is, log 10 d.





Equal to NaN


Equal to PositiveInfinity


Parameter d is specified as a base 10 number.

The following example uses the Log10 method to return the base 10 logarithm for selected values.

No code example is currently available or this language may not be supported.

.NET Framework

Supported in: 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

Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2

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

Community Additions

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