## SUMIF across multiple sheets [UDF]

This post describes a User Defined Function that searches multiple ranges and adds corresponding values across worksheets in a workbook.

A User defined function is a custom function that anyone can build and use, you simply copy the code below and paste it to a code module in your workbook

This custom function works like the SUMIF function except that you can use multiple lookup and sum ranges.

Formula in cell C4:

### User Defined Function Syntax

SUMIFAMS(*lookup_value*, *lookup_range, sum_range*)

### Arguments

Parameter |
Text |

lookup_value |
Required. The value(s) you want to look for. |

lookup_range |
Required. The range you want to search. |

sum_range |
Required. The range you want to add. |

[lookup_range_2] |
Optional. You may have up to 127 additional argument pairs. |

[sum_range_2] |
Optional. |

### VBA code

'Name function and arguments Function SUMIFAMS(lookup_value As Range, ParamArray cellranges() As Variant) 'Declare variables and data types Dim i As Integer, rng1 As Variant, temp As Single, a As Boolean Dim rng2 As Variant, value As Variant, j As Single 'Make sure that the number of cell ranges are an even number. There must be a lookup_range and a sum_range. If (UBound(cellranges) + 1) Mod 2 <> 0 Then 'Display a message box. MsgBox "The number of range arguments must be even. 2, 4 , 8 ... and so on" 'End function so the user can correct the problem. Exit Function End If 'Iterate through all cell ranges For i = LBound(cellranges) To UBound(cellranges) Step 2 'Check that the number of rows in both cell ranges match If cellranges(i).Rows.Count <> cellranges(i + 1).Rows.Count Then MsgBox "The number of rows in range arguments don't match." End If 'Make sure that the ranges only contain one column If cellranges(i).Columns.Count <> 1 Then MsgBox "Range arguments can only have size one column each." Exit Function End If 'Save ranges to an array variable rng1 = cellranges(i).value rng2 = cellranges(i + 1).value 'Iterate through values in array variable For j = LBound(rng1) To UBound(rng1) 'Iterate through each lookup value if there are more than one For Each value In lookup_value 'Make a comparison (not case sensitive) If UCase(rng1(j, 1)) = UCase(value) Then a = True Next value 'Add corresponding number to temp variable if a= True If a = True Then temp = temp + rng2(j, 1) a = False Next j Next i 'Return total to worksheet SumifAMS = temp End Function

### Where to copy vba code?

- Press Alt-F11 to open visual basic editor
- Click Module on the Insert menu
- Copy and paste vba code.
- Exit visual basic editor

You can also use multiple search values, the returned number is a total based on both search values.

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This was a very interesting technique. I've been trying to use something similar. Thanks for sharing.