Excel library

Excel Formula Basics

Every Excel formula starts with an equals sign and is built from values, cell references, operators and functions. Getting comfortable with how references behave when a formula is copied—relative, absolute ($A$1) and mixed—prevents most of the surprises people run into later.

The tutorials below cover the everyday mechanics: filling a formula down a whole column, copying formulas without changing references, linking to other sheets, turning formulas into fixed values, and reading a long formula one part at a time.

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