Cells in Excel are referred to using relative or absolute references. A formula with relative references changes when the cell's position does. If, for example, a cell has a formula "=A1" and you copy ...

Don't panic—your Excel isn't broken. If your column letters suddenly turn into numbers, you've stumbled into R1C1 mode. While it looks like a glitch, it's actually a high-level tool that lets you ...

When you copy a formula, referenced ranges automatically adjust according to the formula's new position unless the ranges use absolute references. Removing the dollar signs in these formulas converts ...