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.
Effortlessly convert your MOBI e-books into structured XLSX spreadsheets. This tool is perfect for researchers, data analysts, and bibliophiles who need to extract and organize textual content from digital books into a tabular format.
MOBI is a proprietary e-book format designed for reading devices with flowable text, while XLSX is a structured spreadsheet format built for calculations, sorting, and data management. Converting MOBI to XLSX involves parsing the document's internal text blocks and mapping them into a grid-based structure. This process transforms linear narrative or reference content into manageable rows and columns, making it easier to filter data, categorize information, or generate reports based on book content.
The conversion preserves all textual data without any loss of information, ensuring the integrity of your content remains intact during the transformation. File size changes remain negligible, keeping your documents lightweight.
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
