← All functions

COUNTUNIQUE

Unsupported (not recognized)

Category: Math · Last tested 2026-09-01

Real compatibility results for the COUNTUNIQUE function: executed in Excel for the web, Google Sheets and LibreOffice Calc, measured against Google’s published documentation. Excel does not document COUNTUNIQUE, so this page makes no claim about Excel. Syntax and links to that documentation are below.

Support matrix

EngineDocumentedLive-testedVerdict
Excel (desktop)No n/a (not an Excel function) n/a
Excel for the web— Yes (recalc, 2026-09-01) Unsupported (not recognized)
Google SheetsYes Yes (Drive import, 2026-09-01) Supported, behaves as documented
LibreOffice CalcNo Yes (25.8.7.3, 2026-09-01) Unsupported (not recognized)

LibreOffice version history

We executed the same test cases under each LibreOffice release to show exactly when COUNTUNIQUE’s support changed — not documentation claims, real results.

LibreOffice versionVerdictTested
24.2.0.3 Unsupported (not recognized) 2026-09-01
24.8.7.2 Unsupported (not recognized) 2026-09-01
25.2.0.3 Unsupported (not recognized) 2026-09-01
25.8.7.3 Unsupported (not recognized) 2026-09-01

Why isn't COUNTUNIQUE working in LibreOffice?

LibreOffice Calc does not implement COUNTUNIQUE as of 25.8.7.3 — in our executed tests it returns a #NAME? (unrecognized function) error. This is not a typo or a settings problem, and saving the file as .xlsx does not change it: the function simply isn’t available yet. Watch the LibreOffice version support page — we re-run every test on each new release, so it will flip to Supported here as soon as it lands.

Discovered quirks

Executed test cases

Excel for the web (executed 2026-09-01 via OneDrive recalculation)

These values come from Excel for the web, not from desktop Excel. They are two different implementations of the calculation engine, and this run measured only the web one: the corpus was uploaded to OneDrive as .xlsx, recalculated by Excel for the web on open, and downloaded again for readback. Excel for the web is a rolling service with no pinnable version, so the run is identified by its date. Where a value here disagrees with the Expected column — which is Microsoft’s documentation of the desktop product — we cannot tell you whether the web engine diverges from the desktop one or the documentation is wrong about both, because we do not run desktop Excel.

FormulaDescriptionResultExpectedVerdict
=COUNTUNIQUE(1,1,2,3,5,8,13) The inline-value half of the page's own Sample Usage line #NAME? 6
Provenance

The page's Sample Usage prints COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) and NO result. This case takes the literal head of that sample; 6 is DERIVED from the definition "Counts the number of unique values in a list of specified values and ranges" -- the seven arguments hold six distinct values because 1 appears twice. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405. BATCH PROVENANCE (batch H, the first Sheets/LibreOffice-only batch). Every function in this batch has x == false in docs/data/compat.json: it is a Google Sheets function that Microsoft does not document at all, so this corpus makes NO claim about it in that engine and nothing here is measured against that vendor's documentation. The authority is Google's own support.google.com function page, cited by full URL and by the date it was read -- Google publishes no version number for these pages, so a bare URL dates nothing. WHAT GOOGLE ACTUALLY PRINTS, WHICH IS LESS THAN IT LOOKS: most of these pages carry a 'Sample Usage' block of FORMULAS WITH NO RESULTS. Where a value below is Google's own published output the note says so; where it is derived from the page's stated semantics the note says that instead, and says from which sentence. No value in this batch was taken from a search snippet, a blog or a mirror. LIBREOFFICE: probed on all four pinned builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) in five storage spellings -- plain, _xlfn., COM.MICROSOFT., ORG.OPENOFFICE. and _xlfn.ORG.OPENOFFICE. -- and #NAME? under every one of them, so the expected values below describe Google Sheets and the LibreOffice column records absence.

Mismatch
=COUNTUNIQUE(A1:A5) The page's other Sample Usage shape: a single range with repeated values #NAME? 3
Provenance

Derived from the same definition; the page publishes no results and populates none of the cells its samples name. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch
=COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) The page's Sample Usage line in full: literals, a cell and a range together #NAME? 9
Provenance

The page's own sample formula, with the cells it names populated by this corpus (Google leaves them unset). The union of {1,2,3,5,8,13}, {2} and {21,34,55,1} has nine distinct members -- A2's 2 and B9's 1 are both already present, which is the point of choosing them. DERIVED, not published. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch
=COUNTUNIQUE(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35) Thirty-five arguments, past the limit the page says is only nominal #NAME? 35
Provenance

DERIVED FROM THE PAGE'S ONE NOTE, which is the only substantive claim it makes: "Although COUNTUNIQUE is specified as taking a maximum of 30 arguments, Google Sheets supports an arbitrary number of arguments for this function." Thirty-five distinct arguments therefore must count 35. Without that Note the same call would be a documented error rather than a documented value. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch

Google Sheets (executed 2026-09-01 via Drive import)

Google Sheets is a rolling service with no pinnable version, so this run is identified by its date. The corpus was imported to Drive as .xlsx, recalculated by Sheets, and exported back for readback.

FormulaDescriptionResultExpectedVerdict
=COUNTUNIQUE(1,1,2,3,5,8,13) The inline-value half of the page's own Sample Usage line 6 6
Provenance

The page's Sample Usage prints COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) and NO result. This case takes the literal head of that sample; 6 is DERIVED from the definition "Counts the number of unique values in a list of specified values and ranges" -- the seven arguments hold six distinct values because 1 appears twice. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405. BATCH PROVENANCE (batch H, the first Sheets/LibreOffice-only batch). Every function in this batch has x == false in docs/data/compat.json: it is a Google Sheets function that Microsoft does not document at all, so this corpus makes NO claim about it in that engine and nothing here is measured against that vendor's documentation. The authority is Google's own support.google.com function page, cited by full URL and by the date it was read -- Google publishes no version number for these pages, so a bare URL dates nothing. WHAT GOOGLE ACTUALLY PRINTS, WHICH IS LESS THAN IT LOOKS: most of these pages carry a 'Sample Usage' block of FORMULAS WITH NO RESULTS. Where a value below is Google's own published output the note says so; where it is derived from the page's stated semantics the note says that instead, and says from which sentence. No value in this batch was taken from a search snippet, a blog or a mirror. LIBREOFFICE: probed on all four pinned builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) in five storage spellings -- plain, _xlfn., COM.MICROSOFT., ORG.OPENOFFICE. and _xlfn.ORG.OPENOFFICE. -- and #NAME? under every one of them, so the expected values below describe Google Sheets and the LibreOffice column records absence.

Matched
=COUNTUNIQUE(A1:A5) The page's other Sample Usage shape: a single range with repeated values 3 3
Provenance

Derived from the same definition; the page publishes no results and populates none of the cells its samples name. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Matched
=COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) The page's Sample Usage line in full: literals, a cell and a range together 9 9
Provenance

The page's own sample formula, with the cells it names populated by this corpus (Google leaves them unset). The union of {1,2,3,5,8,13}, {2} and {21,34,55,1} has nine distinct members -- A2's 2 and B9's 1 are both already present, which is the point of choosing them. DERIVED, not published. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Matched
=COUNTUNIQUE(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35) Thirty-five arguments, past the limit the page says is only nominal 35 35
Provenance

DERIVED FROM THE PAGE'S ONE NOTE, which is the only substantive claim it makes: "Although COUNTUNIQUE is specified as taking a maximum of 30 arguments, Google Sheets supports an arbitrary number of arguments for this function." Thirty-five distinct arguments therefore must count 35. Without that Note the same call would be a documented error rather than a documented value. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Matched

LibreOffice Calc 25.8.7.3 (tested 2026-09-01)

FormulaDescriptionResultExpectedVerdict
=COUNTUNIQUE(1,1,2,3,5,8,13) The inline-value half of the page's own Sample Usage line #NAME? 6
Provenance

The page's Sample Usage prints COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) and NO result. This case takes the literal head of that sample; 6 is DERIVED from the definition "Counts the number of unique values in a list of specified values and ranges" -- the seven arguments hold six distinct values because 1 appears twice. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405. BATCH PROVENANCE (batch H, the first Sheets/LibreOffice-only batch). Every function in this batch has x == false in docs/data/compat.json: it is a Google Sheets function that Microsoft does not document at all, so this corpus makes NO claim about it in that engine and nothing here is measured against that vendor's documentation. The authority is Google's own support.google.com function page, cited by full URL and by the date it was read -- Google publishes no version number for these pages, so a bare URL dates nothing. WHAT GOOGLE ACTUALLY PRINTS, WHICH IS LESS THAN IT LOOKS: most of these pages carry a 'Sample Usage' block of FORMULAS WITH NO RESULTS. Where a value below is Google's own published output the note says so; where it is derived from the page's stated semantics the note says that instead, and says from which sentence. No value in this batch was taken from a search snippet, a blog or a mirror. LIBREOFFICE: probed on all four pinned builds (24.2.0.3, 24.8.7.2, 25.2.0.3, 25.8.7.3) in five storage spellings -- plain, _xlfn., COM.MICROSOFT., ORG.OPENOFFICE. and _xlfn.ORG.OPENOFFICE. -- and #NAME? under every one of them, so the expected values below describe Google Sheets and the LibreOffice column records absence.

Mismatch
=COUNTUNIQUE(A1:A5) The page's other Sample Usage shape: a single range with repeated values #NAME? 3
Provenance

Derived from the same definition; the page publishes no results and populates none of the cells its samples name. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch
=COUNTUNIQUE(1,1,2,3,5,8,13,A2,B6:B9) The page's Sample Usage line in full: literals, a cell and a range together #NAME? 9
Provenance

The page's own sample formula, with the cells it names populated by this corpus (Google leaves them unset). The union of {1,2,3,5,8,13}, {2} and {21,34,55,1} has nine distinct members -- A2's 2 and B9's 1 are both already present, which is the point of choosing them. DERIVED, not published. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch
=COUNTUNIQUE(1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,26,27,28,29,30,31,32,33,34,35) Thirty-five arguments, past the limit the page says is only nominal #NAME? 35
Provenance

DERIVED FROM THE PAGE'S ONE NOTE, which is the only substantive claim it makes: "Although COUNTUNIQUE is specified as taking a maximum of 30 arguments, Google Sheets supports an arbitrary number of arguments for this function." Thirty-five distinct arguments therefore must count 35. Without that Note the same call would be a documented error rather than a documented value. Google's COUNTUNIQUE page, read live on 2026-08-31 at https://support.google.com/docs/answer/3093405.

Mismatch

Docs & syntax

Related how-to recipes

Where COUNTUNIQUE behaves differently