Excel Conditional Formating

What this does

Conditional formatting applies a fill, font or border automatically while a condition is true and removes it when it stops being true. The built-in presets cover simple cases; a formula rule handles everything else, including formatting a cell based on another cell. Excel evaluates the formula once per cell in the Applies to range, shifting relative references as it moves — so the $ anchors decide what each cell actually tests. Most people learn this as a sequence of clicks and forget it by next week; learning it as a pattern instead is what lets you apply it to the next, slightly different version of the problem without starting from scratch. That is the difference this page is trying to make. Treat “excel conditional formating” as a small repeatable workflow rather than a one-off click you hope to remember next time. Use a small test block before the live file, so any surprise in the affected cells shows up while it is still harmless. When a formula is involved, keep the inputs labelled beside it, reference cells instead of typing values, and apply number formatting only after the result checks out. That turns a workspace setting that makes a big sheet comfortable to navigate into a method you can reuse, explain, and defend when the workbook leaves your screen.

A worked example

Orders sit in A2:D10 with amounts in column B: B2 is 150, B3 is 80, B4 is 230. Select A2:D10, add the formula rule =$B2>100 and pick a green fill. Rows 2 and 4 turn green across all four columns; row 3 stays plain. $B locks the column while the row number stays relative, so every cell in a row tests its own row’s B value — B$2 would instead compare everything against row 2. A formula rule keeps status visible without manual recoloring: overdue rows, high amounts or matching text get marked the moment the data changes. Check the referenced cells, argument order and result type in your workbook. Start with the worked example before changing an input, then compare the changed result with the calculation you expected. An error value or a result of a different type is a reason to inspect the inputs and arguments.

In Google Sheets

Google Sheets support for this task has not been verified. Check the function, arguments and workflow in the target product before transferring the example. Matching formula notation does not establish identical behaviour. Nothing on this page is behind a login or a download: the exact answer is at the top, and the detail below it is there for when you need it. That is the whole promise here — the answer first, and just enough context to make it stick. For “excel conditional formating”, keep the input cells and the result visible while you check the formula in Excel. Follow the worked example and change one input at a time. The steps explain the workbook calculation; this page does not run a live calculator for that task.

Common mistakes

• Writing $B$2 instead of $B2, so every row tests the same single cell.
• Using B$2 for a row-wise rule — that locks the row, not the column.
• Writing the formula for the wrong cell: it must evaluate for the top-left cell of the Applies to range.
• Letting an earlier rule mask a later one instead of reordering in Manage Rules or using Stop If True.
• Comparing text values with > and expecting numeric behavior.

Frequently asked questions