PROPER
Supported, behaves as documentedCategory: Text · Last tested 2026-07-04
Support matrix
| Engine | Documented | Live-tested | Verdict |
|---|---|---|---|
| Excel | Yes | Not yet | n/a |
| Google Sheets | Yes | Not yet | n/a |
| LibreOffice Calc | Yes | Yes (24.2.7.2, 2026-07-04) | Supported, behaves as documented |
Executed test cases
LibreOffice Calc 24.2.7.2 (tested 2026-07-04)
| Formula | Description | Result | Expected | Verdict |
|---|---|---|---|---|
| =PROPER("this is a title") | Basic multi-word capitalization: the first letter of each word is capitalized, the rest lowercased | This Is A Title | This Is A Title | Matched |
| =PROPER("76BudGet") | Microsoft's own documented example: PROPER treats any non-letter (including a run of digits) as a word boundary, so the letter immediately following the digits is also capitalized and treated as a new word-start | 76Budget | 76Budget Source: https://support.microsoft.com/en-us/office/proper-function-52a5a283-e8b2-49be-8506-b2887b889f94 - documented example '76BudGet' -> '76Budget' |
Matched |
| =PROPER("o'brien") | PROPER treats an apostrophe as a word boundary too, capitalizing the letter that follows it -- so a name like o'brien becomes O'Brien. Widely reproduced/documented real PROPER behavior (the same non-letter-is-a-boundary rule Microsoft documents for the digit case above), though this exact example isn't on Microsoft's own reference page | O'Brien | O'Brien | Matched |
Docs & syntax
- Excel: official documentation
- Google Sheets: official documentation
- LibreOffice Calc: official documentation