In Excel: use =IF(logical_test, value_if_true, value_if_false) — it tests a condition and returns one value when the test is TRUE and another when it is FALSE.
Syntax
Arguments
| Argument | Description | |
|---|---|---|
logical_test | required | A condition that evaluates to TRUE or FALSE, such as A2>100. |
value_if_true | required | What the formula returns when the condition is TRUE. |
value_if_false | optional | What the formula returns when the condition is FALSE; optional but strongly recommended. |
Related functions
IF(SUMIFS(C2:C100, A2:A100, "West") > 1000, "On target", "Below")Tests a condition: returns the 2nd argument if true, the 3rd if false.SUMIFS(C2:C100, A2:A100, "West") > 1000The left side is greater than the right side.SUMIFS(C2:C100, A2:A100, "West")Adds the cells that match every listed condition.C2:C100A reference to cells in your sheet.A2:A100A reference to cells in your sheet."West"A fixed value typed directly into the formula.1000A fixed value typed directly into the formula."On target"A fixed value typed directly into the formula."Below"A fixed value typed directly into the formula.What this does
IF is the core logical function in Excel: it checks a condition you write, then returns one result if the condition is TRUE and a different result if it is FALSE. You can return text, numbers, or other formulas, nest IFs to handle several cases, and combine IF with AND or OR to test more than one condition at once. It turns a sheet from static data into something that reacts to its values. The same idea underpins a lot of everyday Excel work, so the few minutes spent getting it right here pay back across every sheet you build afterwards. Treat it as a pattern, not a one-off, and it stops being something you look up and starts being something you reach for. Treat “do an if formula in excel” 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 formula 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 workflow that saves repeating the same clicks every week into a method you can reuse, explain, and defend when the workbook leaves your screen.
A worked example
Scores are in column B. In C2, =IF(B2>=60, "Pass", "Fail") returns "Pass" when B2 is 75 and "Fail" when B2 is 48. To grade with several bands, nest IFs: =IF(B2>=90, "A", IF(B2>=80, "B", IF(B2>=70, "C", "F"))). To require two conditions, combine with AND: =IF(AND(B2>=60, D2="yes"), "Eligible", "No"). IF is the foundation of decision logic in Excel; almost every report that flags, grades, or branches on its data is built on it. A practical tip before you scale it up: build it once on a small block of test data, confirm the number against the tool on this page, and only then point it at your real sheet. That one habit catches almost every mistake while it is still cheap to fix, long before a wrong figure reaches a report or a colleague.
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. Nothing on this page is behind a login: the tool runs entirely in your browser, the formula is shown in full with one-click copy, and the steps work the same on Windows and Mac. That is the whole promise here — the exact answer, a way to prove it on your own numbers, and just enough context to make it stick. The short version of “do an if formula in excel”: the answer is at the top of this page, the tool proves it on your own numbers, and the sections above explain why it holds so the next variation does not stump you. Excel rewards people who reference cells instead of typing values and who keep inputs separate from formulas, because that is what makes a result you can audit months later. Build it once, deliberately, with the live tool as a check, and you convert a one-off lookup into a reusable skill — which is the whole point of learning the why and not just the what.
Common mistakes
- Omitting value_if_false, so the formula returns the unhelpful word FALSE instead of a result — use "" for a blank or supply a real value.
- Forgetting quotes around text results, which makes Excel treat the words as undefined names and throw
#NAME?. - Stacking five or more nested IFs that become unreadable — switch to
IFSor a lookup table instead.
Frequently asked questions
How do I nest IF statements?
Put another IF in the value_if_false slot: =IF(B2>=90, "A", IF(B2>=80, "B", "C")). Each IF handles the next band. Beyond a few levels, IFS is cleaner and easier to read.
How do I use IF with two conditions?
Wrap the conditions in AND for "both must be true" or OR for "either", for example =IF(AND(B2>0, C2>0), "OK", "Check"). AND and OR each return a single TRUE or FALSE for IF to act on.
Is there a simpler alternative to many nested IFs?
Yes — IFS lets you list condition/result pairs without nesting: =IFS(B2>=90,"A", B2>=80,"B", B2>=70,"C", TRUE,"F"). It is available in Excel 2019 and Microsoft 365.
Other ways people ask this
On the way here you may have searched this as “how to do an if formula in excel”, “how do you do an if formula in excel” and “how to do if formula 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. “how to do an if formula in excel”, “how do you do an if formula in excel”, “how to do if formula in excel” all point at the one operation explained on this page, which is why they all lead here.