LOOKUP
Supported, behaves as documentedCategory: Lookup and reference · Last tested 2026-08-06
Real, executed compatibility results for the LOOKUP 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
| Engine | Documented | Live-tested | Verdict |
|---|---|---|---|
| Excel | Yes | Not yet | n/a |
| Google Sheets | Yes | Not yet | n/a |
| LibreOffice Calc | Yes | Yes (25.8.7.3, 2026-08-06) | Supported, behaves as documented |
LibreOffice version history
We executed the same test cases under each LibreOffice release to show exactly when LOOKUP’s support changed — not documentation claims, real results.
| LibreOffice version | Verdict | Tested |
|---|---|---|
| 24.2.0.3 | Supported, behaves as documented | 2026-07-19 |
| 24.8.7.2 | Supported, behaves as documented | 2026-07-19 |
| 25.2.0.3 | Supported, behaves as documented | 2026-07-24 |
| 25.8.7.3 | Supported, behaves as documented | 2026-08-06 |
Executed test cases
LibreOffice Calc 25.8.7.3 (tested 2026-08-06)
| Formula | Description | Result | Expected | Verdict |
|---|---|---|---|---|
| =LOOKUP(3,A1:A5,B1:B5) | Vector form exact match against an ascending-sorted lookup_vector | 30 | 30 https://support.microsoft.com/en-us/office/lookup-function-446d94af-663b-451d-8251-369d5e3864cb -- lookup_vector must be in ascending order for LOOKUP to work correctly; this vector is sorted |
Matched |
| =LOOKUP(3.5,A1:A5,B1:B5) | No exact match; LOOKUP uses the largest lookup_vector value that is <= lookup_value | 30 | 30 3.5 has no exact match; largest value <=3.5 is 3 -> paired result 30 |
Matched |
| =LOOKUP(0,A1:A5,B1:B5) | lookup_value smaller than every entry in lookup_vector -> #N/A | #N/A | #N/A | Matched |
| =LOOKUP(2,A1:B3) | Array form (single 2-D argument, no separate result_vector): since A1:B3 has more rows than columns, LOOKUP searches the FIRST column and returns from the LAST column | 200 | 200 Per Microsoft docs' array-form rule (searches first row/col depending on which is longer): match on A2=2 returns paired last-column value 200 |
Matched |
Docs & syntax
- Excel: official documentation
- Google Sheets: official documentation
- LibreOffice Calc: official documentation