# Convert TXT to MOBI

> Convert TXT to MOBI online for free in seconds. Files are processed in a secure, isolated sandbox and deleted automatically. No sign-up, no watermarks.

URL: https://www.converterrr.com/txt-to-mobi

- Runs in an isolated cloud sandbox with Calibre: files are deleted automatically, and the job uses cloud credits.
- Engines: Calibre (cloud).
- API: available. `POST /api/v1/jobs` with `"output_format": "mobi"` (paid plans).
- More: [Document converter](https://www.converterrr.com/document-converter), [TXT converter](https://www.converterrr.com/txt-converter).

## How to convert TXT to MOBI

1. **Add your TXT files.** Drag and drop TXT files onto the converter, paste them, or click to browse. You can add several at once.
2. **Choose MOBI.** MOBI is already selected. Open Options if you want to change quality, size or metadata.
3. **Convert.** Click Convert. Files are processed in a secure cloud sandbox and are usually ready in seconds.
4. **Download your MOBI.** Download each MOBI file, or everything at once as a ZIP.

## Good to know

- For Kindle: AZW3 suits modern Kindles, MOBI older ones. You can also send EPUB directly via Send to Kindle.
- TXT files are typically used for notes, logs and raw text, while MOBI is best for older Kindle e-readers.
- This conversion runs on Calibre in an isolated cloud sandbox. Files are encrypted in transit and deleted automatically.

## TXT vs MOBI

|  | TXT | MOBI |
| --- | --- | --- |
| Full name | Plain Text | Mobipocket eBook |
| Type | Document | eBook |
| Extensions | .txt | .mobi |
| MIME type | text/plain | application/x-mobipocket-ebook |
| Best for | notes, logs and raw text | older Kindle e-readers |
| Properties | open standard | legacy format |

**TXT:** TXT is plain, unformatted text — the simplest and most portable document format there is.

**MOBI:** MOBI is the older Kindle e-book format from Mobipocket, still read by legacy Kindle devices.

The other way around: [convert MOBI to TXT](https://www.converterrr.com/mobi-to-txt).

## Related conversions

- [MOBI to TXT](https://www.converterrr.com/mobi-to-txt) (cloud)
- [TXT to PDF](https://www.converterrr.com/txt-to-pdf) (cloud)
- [PDF to MOBI](https://www.converterrr.com/pdf-to-mobi) (cloud)
- [TXT to DOCX](https://www.converterrr.com/txt-to-docx) (in the browser)
- [DOCX to MOBI](https://www.converterrr.com/docx-to-mobi) (cloud)
- [TXT to EPUB](https://www.converterrr.com/txt-to-epub) (in the browser)
- [EPUB to MOBI](https://www.converterrr.com/epub-to-mobi) (cloud)
- [TXT to DOC](https://www.converterrr.com/txt-to-doc) (cloud)
- [TXT to HTML](https://www.converterrr.com/txt-to-html) (in the browser)
- [HTML to MOBI](https://www.converterrr.com/html-to-mobi) (cloud)
- [TXT to Markdown](https://www.converterrr.com/txt-to-md) (in the browser)
- [Markdown to MOBI](https://www.converterrr.com/md-to-mobi) (cloud)

## Convert TXT to other formats

[TXT to PDF](https://www.converterrr.com/txt-to-pdf), [TXT to DOCX](https://www.converterrr.com/txt-to-docx), [TXT to EPUB](https://www.converterrr.com/txt-to-epub), [TXT to DOC](https://www.converterrr.com/txt-to-doc), [TXT to HTML](https://www.converterrr.com/txt-to-html), [TXT to Markdown](https://www.converterrr.com/txt-to-md), [TXT to AZW3](https://www.converterrr.com/txt-to-azw3), [TXT to ODT](https://www.converterrr.com/txt-to-odt), [TXT to RTF](https://www.converterrr.com/txt-to-rtf), [TXT to LaTeX](https://www.converterrr.com/txt-to-tex), [TXT to IPYNB](https://www.converterrr.com/txt-to-ipynb), [TXT to FB2](https://www.converterrr.com/txt-to-fb2), [TXT to reST](https://www.converterrr.com/txt-to-rst), [TXT to Typst](https://www.converterrr.com/txt-to-typ), [TXT to AsciiDoc](https://www.converterrr.com/txt-to-adoc), [TXT to Org](https://www.converterrr.com/txt-to-org), [TXT to MediaWiki](https://www.converterrr.com/txt-to-wiki), [TXT to OPML](https://www.converterrr.com/txt-to-opml), [TXT to DocBook](https://www.converterrr.com/txt-to-docbook), [TXT to LIT](https://www.converterrr.com/txt-to-lit), [TXT to Textile](https://www.converterrr.com/txt-to-textile), [TXT to PDB](https://www.converterrr.com/txt-to-pdb), [TXT to JATS](https://www.converterrr.com/txt-to-jats), [TXT to Man](https://www.converterrr.com/txt-to-man)

## Convert other formats to MOBI

[PDF to MOBI](https://www.converterrr.com/pdf-to-mobi), [DOCX to MOBI](https://www.converterrr.com/docx-to-mobi), [EPUB to MOBI](https://www.converterrr.com/epub-to-mobi), [HTML to MOBI](https://www.converterrr.com/html-to-mobi), [Markdown to MOBI](https://www.converterrr.com/md-to-mobi), [AZW3 to MOBI](https://www.converterrr.com/azw3-to-mobi), [ODT to MOBI](https://www.converterrr.com/odt-to-mobi), [RTF to MOBI](https://www.converterrr.com/rtf-to-mobi), [FB2 to MOBI](https://www.converterrr.com/fb2-to-mobi), [CBZ to MOBI](https://www.converterrr.com/cbz-to-mobi), [CBR to MOBI](https://www.converterrr.com/cbr-to-mobi), [AZW to MOBI](https://www.converterrr.com/azw-to-mobi), [LIT to MOBI](https://www.converterrr.com/lit-to-mobi), [PDB to MOBI](https://www.converterrr.com/pdb-to-mobi), [LRF to MOBI](https://www.converterrr.com/lrf-to-mobi)

## TXT to MOBI: frequently asked questions

### How do I convert TXT to MOBI?

Drop your TXT file onto the converter above, make sure MOBI is selected, and click Convert. When it's done, download the MOBI file — it usually takes a few seconds.

### Is it safe to convert TXT to MOBI here?

Yes. Your file is sent over an encrypted connection to an isolated sandbox that's created for your job only, then both the original and the result are deleted automatically.

### Is the TXT to MOBI converter free?

Yes. Cloud conversions like this one use credits, and you get free credits every day (3 without an account, 10 with a free account).

### Will converting TXT to MOBI reduce quality?

No — MOBI preserves the content of your TXT file as faithfully as the format allows.

### Can I convert multiple TXT files at once?

Yes. Add up to 5 files at a time without an account, 10 with a free account and up to 500 on paid plans, then download them individually or as a single ZIP.

### Can I convert MOBI back to TXT?

Yes — use our MOBI to TXT converter. Note that converting back and forth between formats can't recover detail lost to lossy compression.