EPUB to FB2
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Step 1: Submit the EPUB ebook you want to convert to FB2 to the upload box at the left.
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Step 2: Wait a moment until the conversion from EPUB to FB2 is complete. The process starts automatically.
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Step 3: Once the conversion has been completed, you will see the download button. Click on it to download your FB2 ebook.
You can upload up to 20 ebooks simultaneously.
Measured on our servers
What to expect when converting EPUB to FB2
Real numbers from every conversion on this tool since 24 October 2026. Nothing here is estimated: we record how long each job took and how large the files were. File names and contents are never stored.
2.4 s
Typical processing time
for a 0.6 MB file (median)
52
Conversions
since 24 October 2026
4.9 MB
Largest file converted
since 24 October 2026
+229%
Output size
about 229% larger than the input
How long conversions take
share of all conversions
- under 1 s0%
- 1–10 s100%
- 10–60 s0%
- 1–5 min0%
- over 5 min0%
Times are server processing only, measured after the upload finished; upload and download are not included. Large files take longer, but the limit is the same for everyone: no account, no queue priority to buy. Updated 2026-10-26
