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Round Function

System.Math

## Syntax

`Math.Round(` value`[,`digits`])`
`value `(required; Numeric expression)

Any numeric expression

`digits `(optional; Integer)

The number of places to include after the decimal point

## Return Value

The same data type as `value`

## Description

Rounds a given number to a specified number of decimal places

## Rules at a Glance

• `digits` can be any whole number between 0 and 16.

• Round follows standard rules for rounding. If the digit in the position to the right of `digits` is 5 or greater, the digit in the `digits` position is incremented by one; otherwise, the digits to the right of `digits` are dropped.

• This is a Shared member, so it can be used without creating any objects.

## Programming Tips and Gotchas

• Round with `digits` set to 2 is the equivalent of `Format` `(expression,` `"#.` `##")`.

• If `value` is a string representation of a numeric value, Round will convert it to a numeric value before rounding. However, if expression is not a string representation of a number, Round generates runtime error 13, “Type mismatch.” The IsNumeric function can be used to ensure that `expression` is a proper numeric representation before calling Round.

• If `value` contains fewer decimal places than `digits`, Round does not pad the return value with trailing zeroes.

## VB.NET/VB 6 Differences

The named parameters of the Round function differ in VB 6 and in the .NET Framework. In VB 6, the named arguments are `number` and `numdigitsafterdecimal`. In VB.NET, they’re `value` and `digits`.