Excel Month Formula

“excel month formula” comes up constantly, so this page leads with the exact answer, and only then explains the detail. Everything works in Excel on Windows and Mac and maps almost one-to-one to Google Sheets. Copy the answer above and get back to work, or read on to turn a one-off fix into something you never have to look up again.

Exact answer

In Excel: use =MONTH(A2), =YEAR(A2) and =DAY(A2) to pull the three parts out of a date — each returns a NUMBER, so January is 1, not "Jan".

On this page8

Syntax

=MONTH(serial_number), =YEAR(serial_number), =DAY(serial_number)

Arguments

Argumentrequired / optionalDescription
serial_numberrequiredThe date to read the part from — a cell holding a real date, not text that looks like one.

Related functions

DATEEOMONTHWEEKDAYDATEDIF
Annotated stepsExcel
1

Confirm the column really holds dates — right-aligned by default, and =ISNUMBER(A2) returns TRUE.

2

Use =MONTH(A2), =YEAR(A2) or =DAY(A2) for the numeric part.

3

For a name rather than a number, use =TEXT(A2,"mmmm") or "mmm"; remember the result is text.

4

For a sortable month-and-year key, use =TEXT(A2,"yyyy-mm") rather than joining two numbers.

5

For grouping in a PivotTable or on a chart axis, =EOMONTH(A2,-1)+1 gives a real date at the month start.

6

If you get #VALUE!, the cell is text: fix it with DATEVALUE or Data ▸ Text to Columns before extracting anything.

Ctrl+CthenCtrl+Shift+V+Cthen+Ctrl+VPaste values · WindowsMac

Need it as an auditable file?

Ships inside the linked template — formula-driven, unlocked, audit-ready.

View template

What this does

These three read one component out of a date serial number. MONTH returns 1–12, DAY returns 1–31, YEAR returns the four-digit year. The single most common surprise is that MONTH returns a number: to get a month NAME you need =TEXT(A2, "mmmm") for January or "mmm" for Jan, and TEXT returns text, so the result sorts alphabetically rather than chronologically. That is why a report grouped by month name usually runs April, August, December unless the sort is done on the month number and only the display uses TEXT. The second thing worth knowing is that a "month and year" grouping key should not be built by concatenating MONTH and YEAR — =TEXT(A2,"yyyy-mm") gives a key that sorts correctly, and =EOMONTH(A2,0) gives a real date you can chart on a time axis. Finally, these functions need a genuine date: fed text like "03/04/2026" they return #VALUE!, which is the fastest way to discover an imported column never became dates at all. 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. The difference between a quick fix and a sheet you can trust is the extra minute you spend validating “excel month formula”. Start on a copy or a tiny sample, keep the affected formula 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 calculation you can defend to a CFO or an auditor, but the practical win is that someone else can open the file and understand what happened without asking you.

A worked example

A2 holds 2026-08-14. =MONTH(A2) → 8, =YEAR(A2) → 2026, =DAY(A2) → 14. For a label rather than a number, =TEXT(A2,"mmmm") → August. For a grouping key that sorts properly, =TEXT(A2,"yyyy-mm") → 2026-08. To collapse a whole column to month starts for a PivotTable or chart, =EOMONTH(A2,-1)+1 → 2026-08-01. Almost every monthly report starts by splitting a date column into parts, and the two traps — numbers rather than names, and text keys that sort alphabetically — account for most of the wrong-looking summaries that follow. If there is any chance you will reuse this, drop it into a small template tab right now: a labelled input area on the left and the formula beside it, checked once against the tool above. Next time the same question comes up, the answer is a single paste away instead of a rebuild from memory.

In Google Sheets

Everything above works in Google Sheets too. Excel and Sheets share the formula syntax used here; only the surrounding menus are arranged differently. That portability is deliberate — learn it once and it follows you between the two tools and across Windows and Mac. Keep this page bookmarked for the next time the same question comes up. Better still, repeat the steps once in your own workbook — doing it yourself is what turns a copied answer into something you remember. If you take one thing from this page on “excel month formula”, make it the habit rather than the keystrokes: set the problem up with labelled inputs, reference those cells, and let Excel do the recomputing. Bookmark the page for the syntax, but do the example once in a blank sheet and check it against the tool above — five minutes of hands-on practice fixes the method in memory far better than re-reading, and it surfaces the small snags while they are still harmless. After that the technique is genuinely yours: faster than searching for it again, and reliable enough to drop into work that other people depend on.

Common mistakes

  • Expecting MONTH to return "August" — it returns 8, and the name needs TEXT.
  • Sorting or grouping on a TEXT month name, which orders April, August, December instead of chronologically.
  • Building a month-year key as MONTH&YEAR, which makes 12026 for December and sorts nonsensically.
  • Running these against text that merely looks like a date and reading #VALUE! as a formula problem rather than a data problem.
  • Using =YEAR(TODAY())-YEAR(B2) as an age, which is wrong by up to a year — DATEDIF with "y" is the correct tool.

Frequently asked questions

How do I get the month from a date in Excel?

=MONTH(A2) returns the month number, 1 to 12. For the name, use =TEXT(A2,"mmmm") or "mmm".

How do I extract the year from a date?

=YEAR(A2) returns the four-digit year as a number.

How do I get month and year together?

=TEXT(A2,"yyyy-mm") gives a key that sorts correctly, and =EOMONTH(A2,-1)+1 gives a real date at the start of the month for charts and PivotTables.

How do I turn a month number into a month name?

=TEXT(DATE(2026, A2, 1), "mmmm") — build any date in that month and format it. The result is text.

Why does MONTH return #VALUE!?

The cell holds text rather than a date. Check with =ISNUMBER(A2) and convert with DATEVALUE or Data ▸ Text to Columns.

Other ways people ask this

This is also commonly searched as “formula excel month” and “excel formulas for months”. They describe the identical operation, so you are in the right place no matter how you phrased it.

Why do people search for this in so many different ways?

Because the same task has many names. “formula excel month”, “excel formulas for months” all point at the one operation explained on this page, which is why they all lead here.