An Excel formula is a way of defining a specific calculation in a worksheet.
In Excel, all formulas must begin with an equals sign (=).
Formulas with Functions
Excel containshundredsof pre-built formulas calledfunctions.
Formulas vs.
Functions
All functions are formulas.
However, it’s possible for you to create formulas in Excel without any functions at all.
For example, this formula adds A1 to A2 without any functions: