XLSX converter
Convert XLSX files to 5 other formats, or turn 4 other formats into XLSX. Everything runs in your browser — drop a file in and pick where it should end up.
Drop your XLSX files here
or browse your device · paste with Ctrl+V
Accepts .xlsx, .xlsm. Choose any output format from the menu on each row.
Your files never leave this device — there is no upload and no server to delete them from.
XLSX
Office Open XML SpreadsheetExcel's modern workbook format, holding multiple sheets, formulas, formatting and charts as zipped XML. The de facto standard for exchanging tabular data in business.
- Developed by
- Microsoft / ECMA
- Released
- 2007
- Extension
- .xlsx, .xlsm
- MIME type
- application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
- Compression
- Lossless
- Specification
- Open
- Readable directly in your browser.
- Can be written directly in your browser.
- 5 outgoing and 4 incoming conversions available.
- 01
Add XLSX files
Drop them on the box above. Batches are fine — each file gets its own row and its own settings.
- 02
Pick an output format
The menu on each row lists every format this file can become, grouped by category and searchable.
- 03
Convert and save
Everything happens locally. Download the files individually, or grab the whole batch as a ZIP.