Are these Excel tools really free?

Yes, all Excel conversion tools on FileConvert are completely free with no hidden charges, watermarks, or registration required. You can convert unlimited Excel files without any cost.

What Excel formats do you support?

We support all major Excel formats including XLS, XLSX, CSV, and XLSM. You can convert between these formats or to PDF documents with full formatting preservation.

Will my formulas and formatting be preserved?

When converting between Excel formats (XLS to XLSX), formulas and formatting are fully preserved. For PDF conversions, we preserve layout, tables, and styling, though formulas are not active in PDF.

What's the difference between XLS and XLSX?

XLS is the older Excel format (Excel 97-2003) with binary structure. XLSX is the modern XML-based format introduced in Excel 2007. XLSX offers better compression, improved data recovery, and supports more rows and columns.

Can I convert multiple Excel files at once?

Yes, most of our Excel converters support batch processing. You can upload up to 10 files simultaneously and convert them all in one go. For PDF conversion, each file becomes a separate PDF.

Why convert CSV to Excel?

CSV files store plain text data without formatting. Converting CSV to Excel (XLSX) allows you to apply formatting, create charts, use formulas, and organize data with multiple worksheets.

Do I need Microsoft Excel installed?

No, all our Excel tools work directly in your browser without requiring Microsoft Excel or any other software installation. They're completely web-based and accessible from any device.

Free Online Excel Tools – Convert XLS, XLSX, CSV & PDF

Q: Is it safe to upload my Excel files?

Absolutely. Your files are processed using secure HTTPS encryption and are automatically and permanently deleted from our servers within 1 hour after conversion. We never store or share your data.

Manage, convert, and edit Excel spreadsheets online with our free Excel tools. No installation or registration required. Use our Excel to PDF converter to create professional reports, or the Excel to CSV converter for seamless data migration. Need to work with older formats? Try our XLS to XLSX converter or XLSX to XLS converter. All conversions preserve formulas, formatting, and data integrity. Fast, secure, and works on any device. Choose a tool below and get started in seconds.

Free online Excel tools to convert between XLS, XLSX, CSV, and PDF formats

Excel to PDF & Document Conversion

Excel to PDF Converter

Convert Excel XLS/XLSX spreadsheets into PDF format while preserving layout, tables, and formatting. Perfect for professional reports and sharing.

CSV to PDF Converter

Transform CSV data into printable PDF documents with proper table formatting. Ideal for creating invoices, reports, and data summaries.

Excel to CSV & Data Conversion

Excel to CSV Converter

Convert XLS/XLSX spreadsheets into CSV format for data interchange, database imports, and compatibility with other applications.

CSV to Excel Converter

Convert CSV files into fully formatted XLSX spreadsheets. Apply formatting, create charts, and organize data with multiple worksheets.

Excel Format Conversion

XLS to XLSX Converter

Convert legacy XLS files (Excel 97-2003) into modern XLSX format for better compression, improved data recovery, and support for more rows and columns.

XLSX to XLS Converter

Convert XLSX files back to XLS format when working with older versions of Excel or legacy software that doesn't support the modern format.

Complete Excel Conversion Suite

Our comprehensive Excel tools help you work with spreadsheet files in any format. Whether you're an accountant preparing financial reports, a data analyst cleaning CSV data, or a business professional sharing reports with clients, we have the tools you need.

Key Features of Our Excel Tools:

✓ 6+ Excel Converters: Convert between XLS, XLSX, CSV, and PDF formats
✓ Batch Processing: Convert multiple Excel files simultaneously to save time
✓ Formatting Preservation: Maintain tables, fonts, colors, and cell styles
✓ Formula Support: Keep formulas intact when converting between Excel formats
✓ Large File Support: Handle files up to 100MB with ease
✓ No Installation: All tools work directly in your browser
✓ Cross-Platform: Works on Windows, Mac, Linux, and mobile devices
✓ Secure Processing: Automatic file deletion after conversion

You can convert Excel to PDF for professional sharing, export Excel data to CSV for analysis, import CSV files into Excel with formatting, or upgrade old XLS files to modern XLSX using our free tools. All processing happens securely in the cloud.

Why Convert Excel Files Between Formats?

Different Excel formats serve different purposes. Understanding when to use each format helps you optimize for compatibility, features, and file size:

XLS (Excel 97-2003): Legacy binary format compatible with older Excel versions. Limited to 65,536 rows and 256 columns. Good for backward compatibility with legacy systems.
XLSX (Excel 2007+): Modern XML-based format. Supports 1,048,576 rows and 16,384 columns. Better compression, improved data recovery, and supports new Excel features.
CSV (Comma-Separated Values): Plain text format for data interchange. Universal compatibility with databases, programming languages, and other applications. No formatting or formulas.
PDF (Portable Document Format): Fixed-layout format for sharing and printing. Preserves appearance but doesn't retain editable formulas. Ideal for reports, invoices, and client deliverables.

If you need to work with other document formats, explore our PDF tools or Word tools.

How to Convert Excel Files Online - Step by Step

Choose your converter: Select the Excel tool based on your source and target formats.
Upload files: Drag and drop or browse to select your Excel or CSV files (supports multiple files).
Adjust settings (if needed): Some converters offer sheet selection or formatting options.
Convert: Click the convert button and wait a few seconds for processing.
Download: Save your converted files individually or as a ZIP archive.

Pro Tips for Best Results:

Convert XLS to XLSX to access modern Excel features and reduce file size
Use CSV format when importing data into databases or analytics tools
Convert to PDF before sharing with clients who don't need to edit
Keep original files as backup when converting between formats
For large Excel files with multiple sheets, convert each sheet separately if needed

Privacy Note: All uploaded files are automatically deleted from our servers within 1 hour after conversion. We never store or share your data.

Common Excel Conversion Scenarios

📊 Financial Reports

Convert Excel financial statements to PDF for professional client delivery. Preserve all formatting, charts, and tables.

Excel to PDF Converter →

🔄 Data Migration

Convert Excel data to CSV for database imports or CSV to Excel for analysis and visualization.

Excel to CSV → | CSV to Excel →

📁 Legacy System Compatibility

Upgrade old XLS files to XLSX, or convert XLSX to XLS for compatibility with older Excel versions.

XLS to XLSX → | XLSX to XLS →

📧 Email Sharing

Convert Excel to PDF for email attachments to ensure recipients see exactly what you intended.

Excel to PDF Converter →

Frequently Asked Questions About Excel Conversion

What's the maximum file size for conversion?

You can upload Excel files up to 100MB per file. For batch processing, the total size limit is 500MB. This accommodates most spreadsheets with multiple sheets and embedded objects.

Can I convert Excel files on my mobile phone?

Yes! All our Excel converters are fully responsive and work on smartphones and tablets. You can convert spreadsheets directly from your mobile browser without installing any apps.

How long does conversion take?

Most conversions complete in 3-10 seconds per file. Batch processing of multiple files may take a bit longer depending on file sizes and complexity.

Do you support Excel with macros (XLSM)?

Yes, we support XLSM files for conversion to other formats. However, macros are not executed or preserved in the output files for security reasons.

Is there a limit on how many Excel files I can convert?

No, you can convert unlimited Excel files. We don't impose daily or monthly limits. All tools are truly free with no quotas.

What happens to my Excel files after conversion?

Files are automatically and permanently deleted from our servers within 1 hour after conversion. We do not keep backups or copies of your spreadsheets.

Do I need to create an account?

No registration or account is required. All our Excel tools are completely free and accessible without signing up.

Will charts and images be preserved when converting to PDF?

Yes, when converting Excel to PDF, all charts, images, shapes, and formatting are preserved in the PDF output. The PDF will look exactly like your original Excel file.