Upload your MOBI file using the picker above and the converter detects the source type and runs the MOBI -> EPUB pipeline. The result downloads automatically when conversion completes; no account is needed for one-off conversions.
Is the MOBI to EPUB converter free?
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Yes — basic MOBI -> EPUB conversion is free with no registration. Premium adds higher per-file size limits, more parallel batch workers, and removes ads.
How big a MOBI file can I convert to EPUB?
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Free accounts: up to 100 MB per MOBI file. Premium: typically 1 GB per file, depending on the MOBI source type. Very large files get split into chunks server-side when the EPUB format permits.
Will conversion change the content of my MOBI?
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Conversion preserves every piece of information that both MOBI and EPUB can represent. Features the EPUB format cannot store (vector data in raster output, formulas in plain-text output, embedded fonts in image output) are rasterized or stripped — the result page flags any feature loss explicitly.
Can I convert many MOBI files to EPUB at once?
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Yes — drop multiple MOBI files into the upload zone and they queue in parallel. Premium has more parallel workers; on a 50-file batch this is the difference between minutes and seconds.
Does the MOBI to EPUB converter work on phones / tablets?
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Yes — the UI is responsive and the conversion pipeline runs server-side, so mobile devices upload-then-download just like desktops. iOS and Android browser file pickers (camera roll, Files app) work end-to-end without an app.
Which browsers does the MOBI to EPUB converter support?
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Chrome, Firefox, Safari (15+), Edge, and Opera. The converter uses a plain `<input type="file">` upload — no WebAssembly or PWA dependencies — so even older browsers convert MOBI to EPUB successfully.
Are my MOBI files kept private?
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Yes — uploaded MOBI files are processed in isolated workers and deleted within minutes. We never view, retain, or share content. See /privacy/ for the data-retention window.
What if the EPUB download does not start automatically?
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Disable any pop-up blocker, then click the download button manually. The result link stays active for 24 hours, so if your network fails mid-download you can re-trigger from the result page without re-uploading the MOBI.
How long does MOBI to EPUB conversion take?
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Typically seconds for small files, a minute or two for files near the size cap. The server-side pipeline runs on dedicated workers — your laptop CPU is not the bottleneck.
Do I need to install software to convert MOBI to EPUB?
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No — the converter runs entirely in your browser plus our servers. No desktop install, no plugin, no extension. Just upload your MOBI, wait, download the EPUB.
Can I convert MOBI to EPUB without an account?
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Yes for one-off conversions. Sign up free for batch history, server-side file storage, and higher conversion limits. Premium adds parallel workers, bigger file caps, and removes ads.