Batch Ebook Converter
Convert several ebooks to one format and download them as a single ZIP — free while in open beta.
Batch conversion is a Pro feature. Local formats (EPUB → ZIP, EPUB → TXT) accept up to 20 files; other formats use a metered third-party service, so they are limited to a few files per batch. Everything runs in your browser and downloads as one ZIP.
Batch conversion is a Pro feature
Upgrade to Pro to convert many ebooks at once and download them as a single ZIP. The free plan covers single-file conversions.
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Frequently asked questions
What is batch ebook conversion?
Batch conversion lets you convert several ebook files to the same target format in one go. On BookConv you can upload several files per batch and download the results as a single ZIP.
Is batch conversion free?
Batch conversion is included with the Pro plan. During the open beta period Pro members can use batch mode at no extra cost; the free plan is limited to single-file conversions.
Which formats can I convert in a batch?
The same formats as the single-file converter — EPUB, PDF, MOBI, AZW3, TXT, DOCX, RTF, FB2, DJVU and more. Every file in a batch is converted to the target format you pick.
How does BookConv batch conversion work?
BookConv converts each file through its conversion API and packages the results into a ZIP you download directly in your browser. There is no separate batch queue to wait on.
What is the maximum file size per file?
Each file in a batch can be up to 10 MB. Larger books are better handled one at a time, or with a desktop tool such as Calibre.
What if one file in my batch fails?
If a single file fails (e.g., it's too large or corrupted), that file is skipped and the rest of your batch still converts successfully. You'll see which files succeeded and which failed in the result ZIP.
Why did my batch upload timeout?
Uploads may time out if you have many large files or a slow connection. Try uploading fewer files at once, or compress your EPUBs before batching. The free tier also limits concurrent uploads.
Can I mix different source formats in one batch?
Yes — you can upload a mix of EPUB, MOBI, AZW3, PDF, etc. and they'll all be converted to the single target format you select.
Where do I find my batch results?
After all files finish converting, a download button appears for the result ZIP. Save it immediately — downloaded links expire within 1 hour for privacy.