XLS to XLSX Converter

Convert legacy XLS files to modern XLSX format online for free

Convert XLS to XLSX

Buruta na uache faili hapa

au bofya ili kuchagua faili

Supported formats: XLS • No file size limit

Haina malipo kwa asilimia 100. Convert unlimited XLS files to XLSX!

XLS to XLSX Converter – Free Online Tool

In today's data-driven world, file formats matter. Our free XLS to XLSX Converter is designed to help you quickly transform files with just a few clicks. Whether you're a developer handling APIs, a student working on a project, or a business professional preparing data, this tool makes conversion effortless.

What is XLS Format?

XLS is the legacy Excel file format used by Microsoft Excel 97-2003. It's a binary format that stores spreadsheet data including formulas, charts, and formatting. While widely supported, it has size and feature limitations compared to modern formats.

What is XLSX Format?

XLSX is the modern Excel file format introduced in Excel 2007. It uses Open XML standard, offers better compression, larger file size support, improved data recovery, and enhanced security features. It's the current standard for spreadsheet files.

Why Convert XLS to XLSX?

There are many reasons why people need this conversion. From simplifying analytics to improving application compatibility, converting with our tool ensures accuracy, reliability, and speed. XLSX offers better performance, security, and compatibility with modern applications.

Mwongozo wa hatua kwa hatua

  1. Upload your XLS file to our converter.
  2. Click the Badili button.
  3. Download your ready-to-use XLSX file instantly.

Mchakato huu ni wa haraka, salama na hauhitaji utaalamu wa kiufundi.

Features of Our XLS to XLSX Converter

  • ✅ 100% Bila malipo ya kutumia na ubadilishaji usio na kikomo.
  • Uchakataji wa ✅ haraka wenye matokeo ya papo hapo.
  • Utunzaji ✅ salama wa faili kwa kufuta kiotomatiki baada ya uongofu.
  • ✅ Inafanya kazi kwenye vifaa vyote ikiwemo PC, Mac, Android na iOS.
  • ✅ Hakuna usakinishaji wa programu unaohitajika – msingi kamili wa wavuti.
  • Uongofu ✅ sahihi na wa kuaminika kila wakati.

Kesi za Matumizi

  • Wasanidi Programu: Modernize legacy Excel files for APIs or applications.
  • Students: Update old spreadsheets for compatibility with current software.
  • Biashara Migrate historical data to modern Excel format.
  • Wachambuzi wa Data: Ensure compatibility with latest analysis tools.

Maswali Yanayoulizwa Mara kwa Mara

Ndiyo, ni bure kabisa bila ada zilizofichwa.

No, this is a 100% online tool.

Yes, our tool preserves structure and data integrity.

Hitimisho

Our XLS to XLSX Converter is the simplest, safest, and most efficient way to handle file conversions online. Stop wasting time with complex manual processes – try it now, upload your file, and get your converted version instantly!