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How do I Match the rounding in Access (query) that was in Excel

I am using a query to create formulas to calculate percentages as well as reimbursement amounts in Access.  Calculations were originally done in Excel, but data is stored in Access, so decided to use Access to calculate as well.  Unfortunately, Acccess not rounding as in Excel.

For example 42 / 64 =.65625
in Excel displays as .6563 rounding to 4 decimal places,
in Access displays as .6562 rounding to 4 decimal places.  

As stated, these must be exact calculations and are finding differences in Access vs. Excel.
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softsupport
Asked:
softsupport
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1 Solution
 
softsupportAuthor Commented:
Need the rounding to be .6563 as in Excel.... How is this accomplished?
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GRayLCommented:
Round(42/64 +.000001,4)

Access performs a Bankers round.  You need to add a trivial amount as shown above that will not affect the result but give you the correct rounding.
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Gustav BrockCIOCommented:
Use Format which is the only function in Access VBA that performs true 4/5 rounding. All the Cxxx function performs banker's rounding:

dblRoundedValue = CDbl(Format(42 / 64, "0.0000"))

/gustav
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shaydieCommented:
You could also use a custom function

Function RoundUp(ByVal Number As Variant, ByVal Places As Integer) _
                                      As Double
Dim dblTemp As Double
dblTemp = CDec(Nz(Number))
dblTemp = CDec(dblTemp * 10 ^ Places)
RoundUp = Fix(dblTemp + 0.5 * Sgn(Number)) / 10 ^ Places
End Function


http://www.consultdmw.com/rounding-numbers.htm
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softsupportAuthor Commented:
GRayL:

Your solution appears to have corrected most of my issues, except one.
I must round all formulas to 4 decimal places when possible.

There are 4 variables ie: A+B+C=D (these variables are field names)
A is / by D and must round giving 4 decimal place answer.
B is / by D and must round giving 4 decimal place answer.
same for  C
I have one record where A = 26, B =6 and C =47 making D= 79
When dividing B by D,  [ 6 / 79 ] answer shows as .076, which i need to display as .0759 to calculate properly.  

How can i adjust this so that all other records, which appear to calculate correctly, do not change.  this is the only record now not calculating properly.

Once again, this is done in a query, that I must export to excel for further calculations.

Thank you all again for any assistance
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Gustav BrockCIOCommented:
Once again, Format does this correctly:

BbyD: CDbl(Format(6 / 79, "0.0000"))

returns 0.0759

Likewise for your other calculations.

/gustav
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GRayLCommented:
softsupport:  cactus_data has the more elegant solution.
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softsupportAuthor Commented:
Apologies, but the Format still not rounding properly. Now instead of one instance of not rounding, have 5 instances.
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Gustav BrockCIOCommented:
Instances??
Are you posting to the right thread?

/gustav
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softsupportAuthor Commented:
For example now i have .1875 * 1.18 = .2212 but should round to .2213
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softsupportAuthor Commented:
Yes, Posting to the correct thread, I stated earlier that GRayL corrected most of my rounding issues except one.
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Gustav BrockCIOCommented:
That's Banker's rounding and why you should round yourself for 4/5 rounding:

dblRoundedValue = CDbl(Format(0.1875 * 1.18, "0.0000"))
returns 0.2213

/gustav

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Gustav BrockCIOCommented:
But 5 "instances" ...?

/gustav
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softsupportAuthor Commented:
Not able to send file, information confidential.  But not returning result of .2213.  There are several calculations that take place in this query.  all using your Format command to round out decimal places and not consistent in the rounding.  This information is sent to the state and must be accurate before sending.
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Gustav BrockCIOCommented:
Well, if you can't or won't tell us what you are doing, it is rather difficult to help.

The expression using Format will and does work. In fact, it is the simplest (though not the fastest) proven method in VBA to perform correct 4/5 rounding under any condition:

http://www.xbeat.net/vbspeed/c_Round.htm
http://www.xbeat.net/vbspeed/c_Round.htm#Round16

/gustav
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GRayLCommented:
Re:  Your post at http:#a34952948

? cdbl(Format(0.1875 * 1.18,"0.0000"))
 0.2213


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softsupportAuthor Commented:
Attached are 2 files.  Excel is where the correct calculations reside that i must use.  The data actually resides in a database, therefore, thought we should use be able to use access to do the calculations also.  Problem is the rounding is not exact.  This example : Little Leaders of Tomorrow on Excel rounds to .2213, in access rounds to .2212.  Is doing eventhough I used the CDbl(Format),"0.0000"))

Any assistance will be appreciated. TEST.xlsx Database1.accdb
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softsupportAuthor Commented:
http://www.lincoln.ac.nz/About-Lincoln-University/outreach/Spreadsheet-Resource-Reservoir/Spreadsheet-Articles/Rounding-problem-4/

Found this information online.... demonstrates my problem..... How can I make the VBA Round function behave like the Excel Round function as demonstrated in the link above?
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Gustav BrockCIOCommented:
No, that is not the source.

The reason is that in your USDA table, data type Single is used throughout.
Therefore, when casted to double, 1.18 resolves to 1.17999994754791 which is smaller than 1.18, thus your rounded value ends up slightly smaller.

So, change all fields to data type Double and reentry your values.

/gustav
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softsupportAuthor Commented:
Geez..... thank you for the assistance.  Pulled my hair out looking for the answer and needed additional eyes to locate the problem.  Much appreciation !
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Gustav BrockCIOCommented:
Thanks. You are welcome!

/gustav
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