Any file up to 500 MB. Drop several files and they come back as one ZIP. Many image, audio and video conversions run in your browser; anything else is uploaded and removed within the hour.
Convert ODS spreadsheets to XLSX format instantly. This tool is essential for users who need to open OpenDocument spreadsheets in Microsoft Excel.
ODS is the native open-source spreadsheet format used by LibreOffice and OpenOffice, based on OpenDocument XML standards. XLSX is the proprietary XML-based spreadsheet format developed by Microsoft for Excel. When you convert ODS to XLSX, the underlying document structure is translated so that Microsoft Office applications can read and edit the rows, columns, and formulas seamlessly.
The conversion between these spreadsheet formats occurs without data loss, meaning your content quality is preserved completely.
We built this project so anyone can convert files without paywalls, accounts, or hidden limits. Here is what that promise means in practice.
Every converter on ConvertX is free to use: no trials, no premium tiers, and no credit packs. We will never put core conversion features behind a subscription. Whether you convert one photo or a hundred files a week, the price stays zero.
Many image, audio, and video conversions run entirely in your browser. Your files never leave your device for those jobs. When server processing is required for documents or specialized formats, uploads are handled securely and removed automatically — typically within one hour.
A quick guide to strengths and trade-offs of popular formats — so you pick the right one before converting.
Office files, PDFs, ebooks, and plain text.
Common extensions: PDF, DOCX, XLSX, PPTX, ODT, EPUB, TXT
Raster and vector graphics for web, print, and photography.
Common extensions: PNG, JPG, WebP, AVIF, GIF, SVG, HEIC, TIFF
Clips, streams, screen recordings, and movies.
Common extensions: MP4, WebM, MOV, MKV, AVI, MPEG
Music, podcasts, voice recordings, and sound effects.
Common extensions: MP3, WAV, FLAC, OGG, AAC, M4A, OPUS
