In Excel: select the range, choose Home ▸ Conditional Formatting ▸ New Rule ▸ Use a formula to determine which cells to format, and enter a rule like =$B2>100 written for the top-left cell of the selection.
Select the exact range to format, starting at the top-left cell.
Choose Home ▸ Conditional Formatting ▸ New Rule ▸ Use a formula to determine which cells to format.
Write the formula for the top-left cell: =$B2>100 colors whole rows where column B exceeds 100.
For a contains-text rule, use =ISNUMBER(SEARCH("urgent",$A2)).
Click Format, set the fill, and confirm with OK.
Open Manage Rules to check the Applies to range and rule order; tick Stop If True when a higher rule should win.
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. Keep the inputs visible and clearly labelled and the whole thing stays auditable — anyone who opens the file later, including you, can see at a glance exactly what feeds the result and change one assumption without hunting through the formula. The difference between a quick fix and a sheet you can trust is the extra minute you spend validating “where is conditional formatting in excel”. Start on a copy or a tiny sample, keep the affected cells visible, and compare the result with the tool above before you touch the real workbook. 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. The point is a workspace setting that makes a big sheet comfortable to navigate, but the practical win is that someone else can open the file and understand what happened without asking you.
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. One habit worth forming early: name the cells that hold your inputs, so the formula reads in plain language instead of a string of cell addresses. A reviewer — or you in three months — can then follow the logic without decoding what B7 and D2 were supposed to mean, which is most of what makes a sheet maintainable.
In Google Sheets
Google Sheets handles this almost identically to Excel. The formula syntax above is the same, and the menu lives under a slightly different label rather than a ribbon tab. Use the platform toggle at the top of the page to switch every keyboard shortcut between Windows and Mac, and expect at most cosmetic differences in naming. Keep this page bookmarked for the next time the same question comes up. Better still, rebuild the example once in your own sheet — doing it yourself, with the tool above to check against, is what turns a copied formula into a technique you own. Here is the takeaway for “where is conditional formatting in excel”: copy the answer if you are busy, but if you have a spare few minutes, rebuild the example in Excel yourself with the tool above open beside it. That single pass — type it, run it, watch the result move when you change an input — is what turns a formula you found into a technique you trust. Keep your inputs labelled and referenced, never hard-coded, and the same sheet stays correct and auditable as it grows. Done that way, you will not need to look this up again, and you will be the person others ask.
Common mistakes
- Writing
$B$2instead of$B2, so every row tests the same single cell. - Using
B$2for a row-wise rule — that locks the row, not the column. - Writing the formula for the wrong cell: it must evaluate for the top-left cell of the Applies to range.
- Letting an earlier rule mask a later one instead of reordering in Manage Rules or using Stop If True.
- Comparing text values with > and expecting numeric behavior.
Frequently asked questions
How do I format a cell based on another cell?
Use a formula rule that references the other cell: select C2:C20 and use =$B2="Done". The formatted range and the tested cell do not have to be the same.
How do I highlight cells that contain specific text?
Use =ISNUMBER(SEARCH("urgent",$A2)) as the rule formula. SEARCH ignores case; use FIND for a case-sensitive match.
What is the Google Sheets equivalent?
Format ▸ Conditional formatting ▸ Custom formula is. The formula works the same way, anchors included, and must start with =.
Other ways people ask this
On the way here you may have searched this as “where is the conditional formatting in excel” and “where to find conditional formatting in excel” — it is all the same task, and this page is the single, complete answer to it.
Why do people search for this in so many different ways?
Because the same task has many names. “where is the conditional formatting in excel”, “where to find conditional formatting in excel” all point at the one operation explained on this page, which is why they all lead here.