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CEILING.MATH

Supported, behaves as documented

Category: Math and trigonometry · Last tested 2026-09-01

Real compatibility results for the CEILING.MATH function: executed in Excel for the web, Google Sheets and LibreOffice Calc, with desktop Excel behavior from Microsoft’s official documentation (we do not run desktop Excel — Excel for the web is a different application and is executed separately). Syntax and links to that documentation are below.

Support matrix

EngineDocumentedLive-testedVerdict
Excel (desktop)Yes No — documented only n/a
Excel for the web— Yes (recalc, 2026-09-01) Supported, behaves as documented
Google SheetsYes Yes (Drive import, 2026-08-29) Supported, behaves as documented
LibreOffice CalcYes Yes (25.8.7.3, 2026-07-29) Supported, behaves as documented

LibreOffice version history

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

LibreOffice versionVerdictTested
24.2.0.3 Supported, behaves as documented 2026-08-29
24.8.7.2 Supported, behaves as documented 2026-08-29
25.2.0.3 Supported, behaves as documented 2026-08-29
25.8.7.3 Supported, behaves as documented 2026-07-29

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
=CEILING.MATH(24.3,5) Rounds 24.3 up to the nearest multiple of 5. Source: https://support.microsoft.com/en-us/office/ceiling-math-function-80f95d2f-b499-4eee-9f16-f795a8e306c8 (worked example table) 25 25 Matched
=CEILING.MATH(6.7) Significance and mode both omitted -> defaults to nearest integer (significance 1). Source: Microsoft CEILING.MATH docs. 7 7 Matched
=CEILING.MATH(-8.1,2) Negative number, mode omitted -> unlike the modeless legacy CEILING function, CEILING.MATH's default for negative numbers rounds TOWARD zero. -8 -8
Provenance

Microsoft worked example: CEILING.MATH(-8.1,2) = -8 ('rounds -8.1 up (toward 0) to the nearest multiple of 2'). This is the modern, explicit-mode successor to legacy CEILING and was designed to match LibreOffice/ODF's CEILING(...,...,Mode) semantics for the default case.

 Matched
=CEILING.MATH(-5.5,2,-1) Negative number with a nonzero mode argument -> rounds away from zero instead of the toward-zero default. -6 -6
Provenance

Microsoft worked example: CEILING.MATH(-5.5,2,-1) = -6 ('rounds -5.5 down (away from 0) ... with a mode of -1'). Mode only affects negative numbers; any nonzero mode reverses the default direction.

 Matched

Google Sheets (executed 2026-08-29 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
=CEILING.MATH(24.3,5) Rounds 24.3 up to the nearest multiple of 5. Source: https://support.microsoft.com/en-us/office/ceiling-math-function-80f95d2f-b499-4eee-9f16-f795a8e306c8 (worked example table) 25 25 Matched
=CEILING.MATH(6.7) Significance and mode both omitted -> defaults to nearest integer (significance 1). Source: Microsoft CEILING.MATH docs. 7 7 Matched
=CEILING.MATH(-8.1,2) Negative number, mode omitted -> unlike the modeless legacy CEILING function, CEILING.MATH's default for negative numbers rounds TOWARD zero. -8 -8
Provenance

Microsoft worked example: CEILING.MATH(-8.1,2) = -8 ('rounds -8.1 up (toward 0) to the nearest multiple of 2'). This is the modern, explicit-mode successor to legacy CEILING and was designed to match LibreOffice/ODF's CEILING(...,...,Mode) semantics for the default case.

 Matched
=CEILING.MATH(-5.5,2,-1) Negative number with a nonzero mode argument -> rounds away from zero instead of the toward-zero default. -6 -6
Provenance

Microsoft worked example: CEILING.MATH(-5.5,2,-1) = -6 ('rounds -5.5 down (away from 0) ... with a mode of -1'). Mode only affects negative numbers; any nonzero mode reverses the default direction.

 Matched

LibreOffice Calc 25.8.7.3 (tested 2026-07-29)

FormulaDescriptionResultExpectedVerdict
=CEILING.MATH(24.3,5) Rounds 24.3 up to the nearest multiple of 5. Source: https://support.microsoft.com/en-us/office/ceiling-math-function-80f95d2f-b499-4eee-9f16-f795a8e306c8 (worked example table) 25 25 Matched
=CEILING.MATH(6.7) Significance and mode both omitted -> defaults to nearest integer (significance 1). Source: Microsoft CEILING.MATH docs. 7 7 Matched
=CEILING.MATH(-8.1,2) Negative number, mode omitted -> unlike the modeless legacy CEILING function, CEILING.MATH's default for negative numbers rounds TOWARD zero. -8 -8
Provenance

Microsoft worked example: CEILING.MATH(-8.1,2) = -8 ('rounds -8.1 up (toward 0) to the nearest multiple of 2'). This is the modern, explicit-mode successor to legacy CEILING and was designed to match LibreOffice/ODF's CEILING(...,...,Mode) semantics for the default case.

 Matched
=CEILING.MATH(-5.5,2,-1) Negative number with a nonzero mode argument -> rounds away from zero instead of the toward-zero default. -6 -6
Provenance

Microsoft worked example: CEILING.MATH(-5.5,2,-1) = -6 ('rounds -5.5 down (away from 0) ... with a mode of -1'). Mode only affects negative numbers; any nonzero mode reverses the default direction.

 Matched

Docs & syntax

Where CEILING.MATH behaves differently