XLSX to XLS
Convert XLSX to XLS online at Convertig.com. Free, fast and secure document converter — no software needed. Upload your XLSX file and get XLS output instantly.
100 MB maximum file size and upto 5 files.
300+ formats supported
Convert between more than 300 different file formats across audio, video, images, documents, ebooks and archives — all in one place.
Lightning fast
Just drop your files, choose an output format and click "Convert". Powerful servers handle the rest in seconds.
Private & secure
Your files are transferred securely and deleted automatically after processing. Your privacy is always 100% protected.
Works everywhere
Convertig is fully browser-based and works on every platform — no apps to download, install or update.
Complete Guide to XLSX to XLS
Online file conversion makes it fast and easy to transform your files between hundreds of formats without installing any desktop software. Our converter handles the entire process in your browser — just upload your files, choose the target format, and download the converted result in seconds. We support all major file categories including images, videos, audio files, documents, ebooks, archives, and more, giving you one reliable tool for every conversion task you encounter.
Modern file conversion needs to be fast, reliable, and privacy-respecting. Our system processes your files on secure servers, applies industry-standard conversion algorithms to preserve quality and content, and automatically deletes all uploaded files after processing. You never need to create an account, and every conversion is completely free — no hidden limits, no subscriptions, no watermarks on output files, and no strings attached at any point in the process.
Whether you're a professional working with specialized formats or a casual user who just needs to open a file on a different device, this converter makes the process effortless. Select files from your computer, import from Dropbox or Google Drive, or paste a direct URL — our system downloads and converts automatically. Batch processing lets you convert up to 20 files at once, saving significant time when working with large file collections or preparing content for distribution across multiple platforms.
All conversions are handled with full attention to quality and accuracy. Output files preserve the essential content, structure, and fidelity of the originals to the maximum extent the target format allows. Your files are protected by encrypted transfer and automatically deleted after your session — complete privacy, every time.
How to Convert Files in 3 Easy Steps
Upload Your Files
Click Choose Files or drag and drop files into the upload zone. You can also import directly from Dropbox, Google Drive, or paste a remote URL link.
Choose Output Format
Select your desired target format from the conversion panel. Open the advanced options to fine-tune quality, resolution, bitrate, or other format-specific settings.
Download Your Result
Once complete, click Download for each converted file. Grab them individually or batch-download all at once. Results stay available for up to 24 hours.
XLSX to XLS FAQs
Convertig.com uses a secure and efficient conversion process that preserves your data integrity while transforming modern XLSX files into the older XLS format, ensuring compatibility with legacy systems.
Yes, Convertig.com supports XLSX files up to a specific size limit (e.g., 50MB) for free conversions. Larger files may require a premium subscription for processing.
No, Convertig.com automatically deletes your files shortly after conversion to maintain privacy. The platform does not retain or share your documents.
No, the converter does not support password-protected or encrypted XLSX files. You must remove the password before uploading the file for conversion.
Yes, the converter ensures that formatting, formulas, and data structure remain intact during the conversion process, providing an accurate XLS output file.