diff --git a/Examples/NoFormulaConversion/NoFormula-AllColumns.ps1 b/Examples/NoFormulaConversion/NoFormula-AllColumns.ps1
new file mode 100644
index 00000000..55cce27c
--- /dev/null
+++ b/Examples/NoFormulaConversion/NoFormula-AllColumns.ps1
@@ -0,0 +1,13 @@
+try {Import-Module $PSScriptRoot\..\..\ImportExcel.psd1} catch {throw ; return}
+
+$xlSourcefile = "$env:TEMP\NoFormulaExample.xlsx"
+
+#Remove existing file
+Remove-Item $xlSourcefile -ErrorAction Ignore
+
+#These formulas should not calculate and remain as text
+[PSCustOmobject][Ordered]@{   
+    Formula1 = "=COUNT(1,1,1)"
+    Formula2 = "=SUM(2,3)"
+    Formula3 = "=1=1"
+} | Export-Excel $xlSourcefile -NoFormulaConversion * -Calculate -Show
diff --git a/Examples/NoFormulaConversion/NoFormula-NamedColumns.ps1 b/Examples/NoFormulaConversion/NoFormula-NamedColumns.ps1
new file mode 100644
index 00000000..db19168c
--- /dev/null
+++ b/Examples/NoFormulaConversion/NoFormula-NamedColumns.ps1
@@ -0,0 +1,12 @@
+try {Import-Module $PSScriptRoot\..\..\ImportExcel.psd1} catch {throw ; return}
+
+$xlSourcefile = "$env:TEMP\NoFormulaExample.xlsx"
+
+#Remove existing file
+Remove-Item $xlSourcefile -ErrorAction Ignore
+
+#Simulate a matching comparison to get a SideIndicator of '=='
+$comparison = Compare-Object -ReferenceObject @(1) -DifferenceObject @(1) -IncludeEqual
+
+#Add '-NoFormulaConversion SideIndicator' to allow '==' to be used in the SideIndicator column without converting to a formula
+$comparison | Export-Excel $xlSourcefile -NoFormulaConversion SideIndicator -Show
diff --git a/Public/Export-Excel.ps1 b/Public/Export-Excel.ps1
index 5c08b208..472ca20d 100644
--- a/Public/Export-Excel.ps1
+++ b/Public/Export-Excel.ps1
@@ -80,6 +80,7 @@
         [Switch]$DisplayPropertySet,
         [String[]]$NoNumberConversion,
         [String[]]$NoHyperLinkConversion,
+        [String[]]$NoFormulaConversion,
         [Object[]]$ConditionalFormat,
         [Object[]]$ConditionalText,
         [Object[]]$Style,
@@ -330,7 +331,10 @@
                                 #Other objects or null.
                                 if ($null -ne $v) { $ws.Cells[$row, $ColumnIndex].Value = $v.toString() }
                             }
-                            elseif ($v[0] -eq '=') {
+                            elseif ( $v[0] -eq '=' -and
+                                $NoFormulaConversion -ne '*' -and
+                                $NoFormulaConversion -notcontains $Name
+                            ) {
                                 $ws.Cells[$row, $ColumnIndex].Formula = ($v -replace '^=', '')
                                 if ($setNumformat) { $ws.Cells[$row, $ColumnIndex].Style.Numberformat.Format = $Numberformat }
                             }
diff --git a/__tests__/Export-Excel.Tests.ps1 b/__tests__/Export-Excel.Tests.ps1
index def74455..9d48d91a 100644
--- a/__tests__/Export-Excel.Tests.ps1
+++ b/__tests__/Export-Excel.Tests.ps1
@@ -205,7 +205,7 @@ Describe ExportExcel -Tag "ExportExcel" {
             else { $OtherCurrencySymbol = "£" }
             $path = "TestDrive:\test.xlsx"
             $warnVar = $null
-            #Test correct export of different data types and number formats; test hyperlinks, test -NoNumberConversion and -NoHyperLinkConversion test object is converted to a string with no warnings, test calcuation of formula
+            #Test correct export of different data types and number formats; test hyperlinks, test -NoNumberConversion, -NoHyperLinkConversion and -NoFormulaConversion test object is converted to a string with no warnings, test calcuation of formula
             Remove-item -Path $path -ErrorAction SilentlyContinue
             [PSCustOmobject][Ordered]@{
                 Date             = Get-Date
@@ -236,7 +236,8 @@ Describe ExportExcel -Tag "ExportExcel" {
                 Link6            = "xl://internal/sheet1!C5"
                 Process          = (Get-Process -Id $PID)
                 TimeSpan         = [datetime]::Now.Subtract([datetime]::Today)
-            } | Export-Excel  -NoNumberConversion IPAddress, StrLeadZero, StrAltPhone2 -NoHyperLinkConversion Link6 -Path $path -Calculate -WarningVariable $warnVar
+                NotAFormula      = "=SUM(2,3)"
+            } | Export-Excel  -NoNumberConversion IPAddress, StrLeadZero, StrAltPhone2 -NoHyperLinkConversion Link6 -NoFormulaConversion NotAFormula -Path $path -Calculate -WarningVariable $warnVar
         }
 
         BeforeEach {
@@ -254,7 +255,7 @@ Describe ExportExcel -Tag "ExportExcel" {
         }
         it "Created the worksheet with the expected name, number of rows and number of columns     " {
             $ws.Name                                                    | Should      -Be "sheet1"
-            $ws.Dimension.Columns                                       | Should      -Be  28
+            $ws.Dimension.Columns                                       | Should      -Be  29
             $ws.Dimension.Rows                                          | Should      -Be  2
         }
         it "Set a date     in Cell A2                                                              " {
@@ -326,6 +327,11 @@ Describe ExportExcel -Tag "ExportExcel" {
             $ws.cells[2, 28].Value.ToOADate()                          | Should      -BeLessThan    1
             $ws.cells[2, 28].Style.Numberformat.Format                 | Should      -Be  '[h]:mm:ss'
         }
+        it "Creates no formula in cell AC2 NotAFormula (NoFormulaConversion)                        " {
+            $ws.Cells[2, 29].Value                                     | Should      -Be  '=SUM(2,3)'
+            $ws.Cells[2, 29].Value.GetType().name                      | Should      -Be  'String'
+            $ws.Cells[2, 29].Formula                                   | Should      -Be  ''
+        }
     }
 
     Context "#               # Setting cells for different data types with -noHeader" {
@@ -1353,4 +1359,27 @@ Describe ExportExcel -Tag "ExportExcel" {
 
         Remove-Item $path 
     }
+
+    It "Should have no formula created using wild card" -Tag Formula {
+        $path = "TestDrive:\testFormula.xlsx"        
+
+        [PSCustOmobject][Ordered]@{
+            Formula1 = "=COUNT(1,1,1)"
+            Formula2 = "=SUM(2,3)"
+            Formula3 = "=1=1"
+        } | Export-Excel -NoFormulaConversion * -Path $path -Calculate
+
+        $excel = Open-ExcelPackage $Path
+        $ws = $excel.Sheet1
+        
+        $ws.Dimension.Rows    | Should -Be 2
+        $ws.Dimension.Columns | Should -Be 3
+
+        $ws.Cells["A2"].Value | Should -BeExactly "=COUNT(1,1,1)"
+        $ws.Cells["B2"].Value | Should -BeExactly "=SUM(2,3)"
+        $ws.Cells["C2"].Value | Should -BeExactly "=1=1"
+        
+        Close-ExcelPackage $excel
+        Remove-Item $path
+    }
 }
\ No newline at end of file