Why Are My Formulas Not Working in Excel

What this does

A formula that displays its own text, or a number that never updates, has one of four causes and they are worth checking in order: calculation is set to Manual; the cell was formatted as Text before the formula was typed, so Excel stored it as a string; Show Formulas is toggled on for the whole sheet; or the entry begins with a stray apostrophe that forces it to be treated as text. Before you run it on a workbook other people depend on, try it on a copy or a few rows first. Undo only reaches back through the current session, so a quick trial run is the cheapest way to see exactly what will change before the file is saved and shared. Treat “why are my formulas not working 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 this is a ribbon command, the selection matters more than the button: confirm the range, apply the command, then spot-check the output before saving. That turns a calculation you can defend to a CFO or an auditor into a method you can reuse, explain, and defend when the workbook leaves your screen.

A worked example

C2 shows =B2*1.2 instead of 60. The Number group reads Text. Set it to General, press F2 then Enter to re-commit the entry, and the cell displays 60. Applying General alone changes nothing — the stored value is still a string until the cell is re-entered. Every one of these failures looks like a broken formula and none of them is, so the time is lost rewriting a formula that was correct all along. If this is something you do often, add the command to the Quick Access Toolbar (right-click it on the ribbon and choose Add to Quick Access Toolbar) or learn its shortcut, so next time it is one click instead of a hunt through the menus.

In Google Sheets

This is a command rather than a formula, so there is no syntax to carry over. Google Sheets arranges its commands in menus across the top instead of a ribbon, names some of them differently and does not have every Excel command — look for the equivalent in the Sheets menus or its help before assuming the steps match. 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. Treat “why are my formulas not working in excel” as a routine rather than a one-off. Once you know which setting or command controls it, the same few steps handle every workbook where it comes up in Excel, and you can explain them to a colleague in a sentence.

Common mistakes

• Setting the cell to General and expecting it to calculate without re-entering — the format change alone does not re-parse the stored text.
• Leaving calculation on Manual for one heavy workbook and not noticing that the mode applies to every file opened in that session.
• Ignoring the word Calculate in the status bar, which is Excel saying results on screen are out of date.
• Deleting and retyping the formula in a cell that is still formatted as Text, which reproduces the problem exactly.

Frequently asked questions