Convert XLSX to OTS Online — Free
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How to Convert
Upload your .xlsx file by dragging it into the upload area or clicking to browse.
Choose your output settings. The default settings work great for most files.
Click Convert and download your .ots file when it's ready.
What is XLSX?
XLSX is the modern Microsoft Excel format. It's the standard for spreadsheets containing data, formulas, charts, and pivot tables.
Format Details
- Full Name
- Microsoft Excel Spreadsheet
- Extension
- .xlsx
Key Features
- Spreadsheet
- Formulas
- Charts
- Data analysis
What is OTS?
OTS is the OpenDocument Format spreadsheet template used by LibreOffice Calc, Apache OpenOffice, and other ODF-compatible applications. It stores cell formatting, formulas, and styles as reusable templates.
Format Details
- Full Name
- OpenDocument Spreadsheet Template
- Extension
- .ots
Key Features
- OpenDocument
- Spreadsheet template
- LibreOffice Calc
- ISO standard
XLSX vs OTS
| Feature | XLSX | OTS |
|---|---|---|
| Full Name | Microsoft Excel Spreadsheet | OpenDocument Spreadsheet Template |
| Extension | .xlsx | .ots |
| Best For | Spreadsheet | OpenDocument |