Convert MOBI to TXT Online Free

Extract the full text content from MOBI Kindle ebooks into a plain text file. Powered by Calibre for accurate text extraction from Amazon's legacy ebook format.

Quick Answer

ChangeThisFile extracts the full text content from your MOBI Kindle ebook into a plain .txt file using Calibre on our secure servers. MOBI is Amazon's legacy ebook format, and converting to plain text gives you universal readability in any text editor without needing Kindle software. Encrypted transfer with automatic file deletion after processing, completely free with no signup required.

Free No signup required Encrypted transfer · Auto-deleted Under 2 minutes Updated March 2026

Convert MOBI to Plain Text

Drop your MOBI file here to convert it instantly

Drag & drop your .mobi file here, or click to browse

Convert to Plain Text instantly

MOBI vs Plain Text: Format Comparison

Key differences between the two formats

Feature	MOBI	TXT
Format	Mobipocket / Amazon Kindle	Plain Text
Content type	Proprietary ebook format	Unformatted plain text
Formatting	Basic HTML styling, bold, italic	No formatting (raw characters only)
DRM support	Amazon DRM possible	No DRM
Images	Embedded cover and inline images	No image support
File size	Compressed (moderate size)	Very small (text only)
Compatibility	Kindle devices and apps	Opens on every device and OS
Editing	Requires Kindle editor or Calibre	Editable in any text editor

When to Convert

Common scenarios where this conversion is useful

Migrate away from Kindle ecosystem

Extract text from MOBI files to free your ebook content from Amazon's proprietary format and Kindle app requirement.

Text mining and analysis

Convert Kindle ebooks to plain text for computational analysis, keyword extraction, or building text corpora.

Accessibility

Plain text works with all screen readers and assistive technology without the compatibility issues of proprietary ebook formats.

Backup and archival

Create a plain text backup of your MOBI ebook content that will remain readable regardless of future format support changes.

Who Uses This Conversion

Tailored guidance for different workflows

Authors

Extract text from a MOBI proof copy sent by your publisher to review content without needing a Kindle device
Convert a MOBI version of your book to plain text for word count verification or plagiarism checking

Compare the extracted text against your original manuscript to verify no content was lost in the MOBI encoding

Use the plain text output for running readability analysis tools that require raw text input

Publishers

Extract text from legacy MOBI catalog titles for migration to modern ebook formats like EPUB
Convert MOBI files to plain text for full-text search indexing across your digital catalog

Verify that special characters, em dashes, and typographic quotes are correctly preserved in the UTF-8 output

Process MOBI files individually to catch any conversion issues before batch processing an entire catalog

Readers

Convert MOBI ebooks to plain text for reading on devices without Kindle app support
Extract text from MOBI files to use with text-to-speech software or personal note-taking workflows

After conversion, open the TXT file to verify chapter breaks and paragraph spacing look correct

Keep the original MOBI file as a backup in case you need the formatted version later

How to Convert MOBI to Plain Text

1

Upload your MOBI file

Drag and drop your .mobi file onto the converter, or click to browse. Files up to 50 MB are supported for free.
2

Server-side conversion via Calibre

Your file is securely uploaded and converted on our servers using Calibre. The text content is extracted from the MOBI container, stripping away HTML markup, DRM-free styling, and embedded media.
3

Download the result

Once conversion is complete, click Download to save your .txt file. The uploaded file is automatically deleted from our servers.

Frequently Asked Questions

Is the MOBI to TXT conversion free?

Yes, completely free. Convert MOBI to plain text with no cost, no signup, and no watermarks.

Is my file kept on your servers?

No. Files are automatically deleted immediately after conversion. Nothing is stored or retained.

Is the transfer secure?

Yes. Files are transferred over encrypted HTTPS connections. Your data is protected in transit.

What technology powers this conversion?

The conversion uses Calibre, the powerful open-source ebook management tool. Calibre can parse MOBI's internal Mobipocket/KF7 structure and extract all readable text content.

Will DRM-protected MOBI files convert?

No. DRM-protected Kindle ebooks cannot be converted. Only DRM-free MOBI files are supported.

Is MOBI the same as AZW?

MOBI and AZW are closely related. AZW is Amazon's DRM-wrapped version of MOBI. AZW3 (KF8) is a newer format. This converter handles DRM-free MOBI files.

What happens to images and formatting?

All images, cover art, bold, italic, and other formatting are removed. The output contains only the readable text content.

Will chapter breaks be preserved?

Yes. Calibre preserves chapter divisions as text separators, keeping the book's logical structure intact in the plain text output.

What character encoding does the TXT file use?

The output TXT file uses UTF-8 encoding, supporting all languages and special characters from the original MOBI file.

Can I convert the text back to MOBI?

Yes, you can convert TXT to MOBI using ChangeThisFile. However, all original formatting, images, and metadata will not be restored.

Can I convert multiple files at once?

Currently, files are converted one at a time. Upload your next file after downloading the result.

What is the maximum file size?

Files up to 50 MB are supported for free conversion.

Related Conversions

Ready to convert your file?

Convert MOBI to Plain Text instantly — free, no signup required.

Start Converting