INT
Supported, behaves as documentedCategory: Math and trigonometry · Last tested 2026-09-01
Real compatibility results for the INT 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
| Engine | Documented | Live-tested | Verdict |
|---|---|---|---|
| Excel (desktop) | Yes | No — documented only | n/a |
| Excel for the web | — | Yes (recalc, 2026-09-01) | Supported, behaves as documented |
| Google Sheets | Yes | Yes (Drive import, 2026-08-29) | Supported, behaves as documented |
| LibreOffice Calc | Yes | 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 INT’s support changed — not documentation claims, real results.
| LibreOffice version | Verdict | Tested |
|---|---|---|
| 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.
| Formula | Description | Result | Expected | Verdict |
|---|---|---|---|---|
| =INT(8.9) | Positive fractional number truncates its decimal part | 8 | 8 | Matched |
| =INT(-8.9) | Documented classic divergence from TRUNC: INT always rounds DOWN to the nearest integer (toward negative infinity), so a negative fractional number rounds AWAY from zero | -9 | -9ProvenancePer Microsoft's INT function docs, INT(-8.9) = -9 because INT rounds down toward negative infinity, unlike TRUNC(-8.9) = -8 which truncates toward zero -- see the paired TRUNC_negative_truncates_toward_zero case in TRUNC.json for the direct comparison |
Matched |
| =INT(5) | A whole number is returned unchanged | 5 | 5 | Matched |
| =INT(-5) | A whole negative number is returned unchanged (no fractional part to drop) | -5 | -5 | 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.
| Formula | Description | Result | Expected | Verdict |
|---|---|---|---|---|
| =INT(8.9) | Positive fractional number truncates its decimal part | 8 | 8 | Matched |
| =INT(-8.9) | Documented classic divergence from TRUNC: INT always rounds DOWN to the nearest integer (toward negative infinity), so a negative fractional number rounds AWAY from zero | -9 | -9ProvenancePer Microsoft's INT function docs, INT(-8.9) = -9 because INT rounds down toward negative infinity, unlike TRUNC(-8.9) = -8 which truncates toward zero -- see the paired TRUNC_negative_truncates_toward_zero case in TRUNC.json for the direct comparison |
Matched |
| =INT(5) | A whole number is returned unchanged | 5 | 5 | Matched |
| =INT(-5) | A whole negative number is returned unchanged (no fractional part to drop) | -5 | -5 | Matched |
LibreOffice Calc 25.8.7.3 (tested 2026-07-29)
| Formula | Description | Result | Expected | Verdict |
|---|---|---|---|---|
| =INT(8.9) | Positive fractional number truncates its decimal part | 8 | 8 | Matched |
| =INT(-8.9) | Documented classic divergence from TRUNC: INT always rounds DOWN to the nearest integer (toward negative infinity), so a negative fractional number rounds AWAY from zero | -9 | -9ProvenancePer Microsoft's INT function docs, INT(-8.9) = -9 because INT rounds down toward negative infinity, unlike TRUNC(-8.9) = -8 which truncates toward zero -- see the paired TRUNC_negative_truncates_toward_zero case in TRUNC.json for the direct comparison |
Matched |
| =INT(5) | A whole number is returned unchanged | 5 | 5 | Matched |
| =INT(-5) | A whole negative number is returned unchanged (no fractional part to drop) | -5 | -5 | Matched |
Docs & syntax
- Excel (desktop): official documentation
- Google Sheets: official documentation
- LibreOffice Calc: official documentation
Related how-to recipes
- How to convert minutes to hours and minutes
- How to remove the time from a date-time
- How to count weeks and days between two dates
Where INT behaves differently
- CEILING, FLOOR & MROUND: Excel vs LibreOffice rounding
Rounding to a multiple with negative numbers: what the legacy CEILING/FLOOR Mode argument does, why the documented default divergence did not reproduce in four LibreOffice builds, and the #NUM! vs #VALUE! split. - DOLLARDE and DOLLARFR: fractional bond prices across engines
Executed: all eight valid DOLLARDE/DOLLARFR conversions match Microsoft's documented values in LibreOffice 25.8.7.3 and Google Sheets, including the documented truncation of a non-integer fraction. All four error cases return #VALUE! in LibreOffice where #DIV/0! or #NUM! is documented; Google Sheets returns the documented code.