Math.Round Method (System)

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.NET Framework Class Library

Math..::.Round Method

Rounds a value to the nearest integer or specified number of decimal places.

Overload List

	Name	Description
	Round(Decimal)	Rounds a decimal value to the nearest integral value.
	Round(Double)	Rounds a double-precision floating-point value to the nearest integral value.
	Round(Decimal, Int32)	Rounds a decimal value to a specified number of fractional digits.
	Round(Decimal, MidpointRounding)	Rounds a decimal value to the nearest integer. A parameter specifies how to round the value if it is midway between two other numbers.
	Round(Double, Int32)	Rounds a double-precision floating-point value to a specified number of fractional digits.
	Round(Double, MidpointRounding)	Rounds a double-precision floating-point value to the nearest integer. A parameter specifies how to round the value if it is midway between two other numbers.
	Round(Decimal, Int32, MidpointRounding)	Rounds a decimal value to a specified number of fractional digits. A parameter specifies how to round the value if it is midway between two other numbers.
	Round(Double, Int32, MidpointRounding)	Rounds a double-precision floating-point value to the specified number of fractional digits. A parameter specifies how to round the value if it is midway between two other numbers.

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Math Class

Math Members

System Namespace

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DoomGoober

Default Rounding Method

By default, Math.Round uses MidpointRounding.ToEven. Most people are not familiar with "rounding to even" as the alternative, "rounding away from zero" is more commonly taught in school. .NET defaults to "Rounding to even" as it is statistically superior because it doesn't share the tendency of "rounding away from zero" to round up slightly more often than it rounds down (assuming the numbers being rounded tend to be positive.)

Tags : round math.round rounding