Skip to main content
Convert999
FormatosTodos los ConvertidoresCompararCasos de UsoToolsBlog
Convertidor
Convert999

Convertidor de archivos online gratuito con soporte para más de 400 formatos.

Producto

  • Todos los Convertidores
  • Formatos
  • Comparar
  • Casos de Uso
  • Tools

Recursos

  • Acerca de
  • Blog
  • Security
  • Glossary
  • Statistics
  • Changelog
  • Contact

Legal

  • Política de Privacidad
  • Términos de Servicio

© 2026 Convert999. Todos los derechos reservados.

Made with for the web

HomeConvertXLS Converter

XLS Converter

Convert Microsoft Excel 97-2003 files to any format — free, fast, and 100% private

Hojas de Cálculo7+ Output Formats
Elegir Archivos

o arrastra y suelta archivos aquí

Tamaño máximo: 2GB

Tus archivos se procesan localmente en tu navegador. Nada se sube a ningún servidor.

Instant Conversion

Convert XLS files in seconds using WebAssembly

100% Private

Files never leave your device — zero server uploads

Free Forever

No limits, no registration, no watermarks

What is XLS?

Microsoft Excel 97-2003 (.xls)

Microsoft Excel 97-2003 (.xls) is a spreadsheet file format.

Convert XLS to Any Format

Select an output format below to convert your Microsoft Excel 97-2003 file

XLSXLSXXLSODSXLSCSVXLSTSVXLSNUMBERSXLSXLSMXLSXLSB

How to Convert XLS Files

1

Open Convert999 and upload your XLS file by clicking "Choose Files" or dragging it into the converter.

2

Select the desired output format (e.g., PDF, JPG, PNG, DOCX, MP3, or any of 7+ supported formats).

3

Click "Convert Now" and download your converted file instantly. No waiting, no server processing.

XLS Converter FAQ

How do I convert XLS files?
Upload your XLS file to Convert999, select the desired output format, and click convert. The conversion happens instantly in your browser — no file uploads to any server.
What formats can I convert XLS to?
You can convert XLS to 7+ formats including XLSX, ODS, CSV, TSV, NUMBERS and more.
Is the XLS converter free?
Yes! Convert999 is 100% free — no registration, no watermarks, no file limits. Convert unlimited XLS files at no cost.
Can I convert XLS files on my phone?
Yes, Convert999 works on any device with a web browser — iPhone, Android, tablet, or desktop. No app installation needed.
Is it safe to convert XLS files online?
Convert999 processes all files locally in your browser using WebAssembly technology. Your files never leave your device, ensuring complete privacy.
What is the maximum XLS file size I can convert?
Convert999 supports files up to 2GB. Since processing happens locally, performance depends on your device's available memory.

Related Tools

XLS Format Details

Full specification & info

Convert to XLS

All sources → XLS

Hojas de Cálculo

All spreadsheet formats

File Tools

Compress, resize, merge

Other Popular Converters

.pdfPDF Converter.docDOC Converter.docxDOCX Converter.odtODT Converter.rtfRTF Converter.txtTXT Converter.htmlHTML Converter.htmHTM Converter.mdMD Converter.texTEX Converter