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In this article, you will see two different procedures to insert a trendline in an Excel cell. Here, we have the data on the population of three big cities for four years. To illustrate this article, we will use the following data set. NewFormula = Replace(newFormula, Application.DecimalSeparator, ".2 Easy Ways to Insert Trendline in an Excel Cell NewFormula = Replace(newFormula, "y =", "") 'Strips "y =" 'Format the new formula to be understanding by Evaluate() function Trendline.DisplayEquation = trendlineWasVisible 'If you have set the precision, you can set it back here 'Put back the trendline equation like it was before 'Add parenthesis if the formula finishes with a superscript char If preChar = "x" Or preChar = "e" Or IsNumeric(preChar) Or preChar = ")" Then If preChar = "x" Or preChar = "e" Or preChar = ")" Or IsNumeric(preChar) Then 'If we need to add a "*" before the actual char If Not bCharIsPower And bPreCharIsPower Then If bCharIsPower And Not bPreCharIsPower Then 'Look if the char in written in superscriptīCharIsPower = (i).Font.Superscript TrendlineWasVisible = trendline.DisplayEquationįor i = 1 To Ĭhar = Mid(, i, 1) 'get the actual char 'Keep track of the style of the trendline. If trendline.Type = xlLogarithmic And xValue <= 0 Then 'If equation is logarithmic and x <= 0, return 0 'If the trendline is a moving average, return 0 Public Function calcTrendlineValueForX(trendline As trendline, xValue As Double) As Double Result = calcTrendlineValueForX((1).Trendlines(1), x) 'I have a sheet with one scatter plot in sheet "graph" You may want to set the precision of the Datalabel to suit your needs. I found a solution that works for every type of trendlines (exept for moving average of course).