How to use this office tool
- Upload a spreadsheet, select its sheet, and identify the date column.
- Enter an inclusive start date and end date.
- Process the rows, review unmatched or invalid-date counts, and download the filtered XLSX file.
Keep spreadsheet rows whose selected date falls within an inclusive start and end date, then export the filtered table.
The filter interprets Excel serial dates, JavaScript Date cells, and common ISO-like date text, then keeps dates inside the chosen range.
Ambiguous text such as 03/04/2026 may be interpreted differently across locales; ISO YYYY-MM-DD is safer.
XLSX and XLS workbooks are read with SheetJS. CSV and TSV are supported where listed. Each input file is limited to 25 MB, previews show at most 20 rows and 12 columns, and advanced Excel objects are not guaranteed to survive export.
| Processing | Inside this browser |
|---|---|
| Output | New XLSX file |
| Excel engine | Stored values; no full formula recalculation |
Yes. The range is inclusive of both boundary dates.
Yes. Numeric Excel date serials are converted using the workbook date system supported by the parser.
They are excluded from the filtered output and counted separately.
Yes. Comparisons normalize valid values to their calendar date for the selected range.
A value such as 03/04/2026 can mean March 4 or April 3. ISO-formatted dates reduce that uncertainty.
| Uploads | None |
|---|---|
| Preview | Limited to protect browser performance |
| Download | Created only after successful processing |