Rounding Function MRound of Excel

Introduction.

Normally we round numbers in calculations when the fractional part is 0.5 or more to 1 (the next highest integer) or truncate it together. But, there are times that this fractional part itself is rounded to a certain level so that it can be used for disbursement of money, like wages.

For example, in Currencies when the value ends up in 15 cents or 30 cents they should be rounded to 25 cents, and 50 cents respectively, for determining the requirement of the correct number and denominations of Coins for disbursement. If we decide we need only 50 Cents Coins then a value of 25 Cents or more should be rounded to 50 Cents and less than 25 Cents to zero.

So, we need a function that can accept a value as precision and find multiples of that value and when the remainder value is half or more of the precision value it should be rounded to the next level. Not necessary that it should be a fractional value it can be any value as precision.

In MS-Access we have a Round() Function that will only round the Double Precision numbers into the required number of Decimal Places or to the next integer level applying the normal rules that we are already familiar with. There is a Worksheet Function MRound() in MS-Excel that can do these kinds of calculations, but found nothing like that in MS-Access. We cannot go to Excel when we want this in Access.

The MRound Function

We will write an MRound() Function in Access with the same name.

So here it is:

Public Function MRound(ByVal Number As Double, ByVal Precision As Double) As Double
Dim Y As Double

On Error GoTo MRound_Err

   Y = Int(Number / Precision) * Precision
   MRound = IIf(((Number - Y) / Precision * 100 + 0.1) >= 50, Y + Precision, Y)

MRound_Exit:
Exit Function

MRound_Err:
MsgBox Err.Description, , "MRound()"
MRound = 0
Resume MRound_Exit
End Function

Save the Function and do Test Runs.

Copy and paste the above Code into a Global Module of your Database and save the Module.

Open the Debug Window (Ctrl+G) to try it out directly.

Sample Runs:

? Mround(123.3,.2)

Result: 123.4

? Mround(123.24,.5)

Result: 123

? Mround(123.25,.5)

Result: 123.5

? Mround(123.74,.5)

Result: 123.5

? Mround(123.75,.5)

Result: 124

? Mround(10,3)

Result: 9

? Mround(11,3)

Result: 12

Add to your Function Library

If you would like to share this Function across your Other MS-Access Databases then create a Library Database with the Function in it and set a Reference to the Library Database through Tools- ->References in VBA Window.

Earlier Post Link References:

1. Roundup Excel Function in MS Access
2. Proper Excel Function in Microsoft Access
3. Appending Data from Excel to Access
4. Writing Excel Data Directly into Access
5. Printing MS-Access Report from Excel
6. Copy Paste Data From Excel to Access2007
7. Microsoft Excel-Power in MS-Access
8. Rounding Function MROUND of Excel
9. MS-Access Live Data in Excel
10. Access Live Data in Excel- 2
11. Opening Excel Database Directly
12. Create Excel, Word Files from Access