PDF to MOBI
FreeConvert PDF to MOBI format for Kindle eReaders
About PDF to MOBI
Older Kindle devices read MOBI files more reliably than PDFs, which often show up tiny and unscrollable on an eReader screen. Converting to MOBI makes your document behave like a proper Kindle book.
This tool turns your PDF into a MOBI file ready for Kindle reading, with text that adapts to the device. It's free, browser-based, with no signup and no watermark. Your upload is deleted after conversion, so your files stay private.
Common uses
- Sending a PDF to an older Kindle as a readable book
- Reading a document with adjustable text on Kindle
- Converting a report for offline Kindle reading
- Loading a manual onto a Kindle eReader
- Making a PDF feel like a native Kindle title
How to use
- 1
Upload your file
Click the upload area or drag & drop your file. Supports APPLICATION/PDF. Up to 50 MB.
- 2
Click "Process — PDF to MOBI"
Click the process button. Your file is converted instantly on our secure servers.
- 3
Download your result
Preview and download your converted file. No watermarks, no quality loss, no expiry.
Why ToolHub?
- 100% Free — no account needed
- Works in your browser — no software required
- Instant results
- Secure and private
- No data stored
- Simple to use
FAQ
Is MOBI right for Kindle?
MOBI is a long-standing Kindle format that older devices handle well; newer Kindles may prefer other formats.
Will the text reflow on Kindle?
MOBI supports reflowable text, so it adapts to your Kindle's screen and font size better than a PDF.
Will complex layouts survive?
Reflowable formats favor text over fixed design, so intricate PDF layouts may be simplified.
Can I use PDF to MOBI on mobile?
Yes — ToolHub is fully responsive and works on iPhone, Android, tablets and all modern browsers. No app install needed.