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FLOOR

Quirk found

Category: Compatibility · Last tested 2026-08-06

Real, executed compatibility results for the FLOOR function across Microsoft Excel, Google Sheets, and LibreOffice Calc — verified by actually running it. Syntax and links to each vendor’s official documentation are below.

Support matrix

EngineDocumentedLive-testedVerdict
Excel Yes Not yet n/a
Google Sheets Yes Not yet n/a
LibreOffice Calc No Yes (25.8.7.3, 2026-08-06) Quirk found

LibreOffice version history

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

LibreOffice versionVerdictTested
24.2.0.3 Quirk found 2026-07-19
24.8.7.2 Quirk found 2026-07-19
25.2.0.3 Quirk found 2026-07-24
25.8.7.3 Quirk found 2026-08-06

Why isn't FLOOR working in LibreOffice?

FLOOR exists in LibreOffice 25.8.7.3, but it is not a drop-in match for Excel — our executed tests found real behavioral differences (detailed in the test results on this page). If a formula that works in Excel or Google Sheets misbehaves in LibreOffice, compare your usage against the failing cases above before assuming your data is wrong.

Discovered quirks

Executed test cases

LibreOffice Calc 25.8.7.3 (tested 2026-08-06)

FormulaDescriptionResultExpectedVerdict
=FLOOR(3.7,2) Basic case, rounds 3.7 down to the nearest multiple of 2. Source: https://support.microsoft.com/en-us/office/floor-function-14bb497c-24f2-4e04-b327-b0b4de5a8886 (worked example table) 2 2 Matched
=FLOOR(0.234,0.01) Rounds 0.234 down to the nearest multiple of 0.01. Source: Microsoft FLOOR docs worked example table. 0.23 0.23 Matched
=FLOOR(-2.5,-2) Number and significance both negative -> Microsoft's own worked example rounds this TOWARD zero (-2), which is the opposite direction CEILING takes for the same-signed case. -2 -2
Microsoft's worked example table gives FLOOR(-2.5,-2) = -2 exactly (https://support.microsoft.com/en-us/office/floor-function-14bb497c-24f2-4e04-b327-b0b4de5a8886). Note this is the OPPOSITE rounding direction of CEILING(-2.5,-2)=-4 for the identical arguments -- FLOOR and CEILING deliberately diverge on both-negative inputs, not a bug.		 Matched
=FLOOR(2.5,-2) Number positive, significance negative (opposite signs) -> #NUM!, explicitly documented by Microsoft: 'If Number is positive and Significance is negative, FLOOR returns the #NUM! error value.' #VALUE! #NUM! Mismatch
=FLOOR(-45.67,-2) GOLD QUIRK CANDIDATE: mirror image of the CEILING default-Mode divergence. Both Number and significance negative, Mode omitted. -44 -44
Derived from Microsoft's own worked FLOOR(-2.5,-2)=-2 example (both-negative case rounds TOWARD zero): ratio -45.67/-2=22.835, truncating toward zero gives 22, 22*-2=-44. LibreOffice's own FLOOR docs (https://help.libreoffice.org/latest/en-US/text/scalc/01/func_floor.html) define an optional 3rd Mode argument that only applies when both Number and Significance are negative, stating 'Mode = 0 or omitted: negative numbers are rounded down (away from zero)' with LO's own worked example FLOOR(-45.67;-2;0) = -46. So the identical 2-arg formula (Mode omitted) is documented to resolve to -46 under LibreOffice's default vs -44 under Microsoft's documented behavior -- a genuine divergence, and the exact mirror image of the CEILING case above (there Excel defaults away-from-zero and LO defaults toward-zero; here Excel defaults toward-zero and LO defaults away-from-zero). If LO's executed result is -46, matched_expected:false is the correct, intended signal -- do not 'fix' this expectation to match LO.		 Matched
=FLOOR("abc",1) Nonnumeric first argument -> #VALUE!, per Microsoft docs: 'If either argument is nonnumeric, FLOOR returns the #VALUE! error value.' #VALUE! #VALUE! Matched

Docs & syntax

Compared against other functions