Converted on secure servers

FictionBook FB2 to Word DOCX Converter

FictionBook FB2 is converted by Calibre ebook-convert into Word DOCX, preserving book structure for fb2-to-docx.

Free anonymous limits

Free without signing in: 10 server conversions per day, 10 MB each. Browser-only conversions stay on this device and do not count against server limits.

Need bigger files or batch? →API access →

Supported formats

.fb2 → .docx

Conversion engine

calibre

Encrypted in transitDeleted within 24 hData formats stay in browser10 free today

10 free today · See pricing →

Pair-specific

Features & use cases

Features

FictionBook FB2 is converted by Calibre ebook-convert into Word DOCX, preserving book structure for fb2-to-docx.
Title, author, language, publisher, cover, and table-of-contents metadata are copied when the source exposes them.
Chapter XHTML, images, links, and CSS are normalized; reader-specific typography can change in the destination.
EPUB and FB2 keep reflowable book semantics better than fixed page geometry.

Use cases

Prepare FB2 files for tools that expect DOCX.
Create reviewable samples for support tickets, tests, and data handoffs.
Batch recurring file chores while keeping warnings attached to each output.
Normalize partner or archive files without installing desktop conversion software.

See real results

Original

Runbook.docx

Runbook.docxWord document

Q3 migration runbook

Owner: Data Platform

Export workbook
Validate warnings
Attach checksum

system

owner

cutoff

billing

Maya

2026-09-30

Converted

Pretty preview

# Q3 migration runbook

Owner: **Data Platform**

- Export workbook
- Validate warnings
- Attach checksum

| system | owner | cutoff |
| --- | --- | --- |
| billing | Maya | 2026-09-30 |

semantic blocks

comments omitted

2.1 s

secure server

Try this conversion

What actually changes

FictionBook FB2 is converted by Calibre ebook-convert into Word DOCX, preserving book structure for fb2-to-docx.

Title, author, language, publisher, cover, and table-of-contents metadata are copied when the source exposes them.

Chapter XHTML, images, links, and CSS are normalized; reader-specific typography can change in the destination.

EPUB and FB2 keep reflowable book semantics better than fixed page geometry.

DRM-protected ebooks are not supported; the converter must be able to read the uploaded book bytes.

Outputs for DOCX, TXT, HTML, or Markdown are extracted from ebook chapters rather than designed page replicas.

Example

input

FictionBook FB2 ebook with cover, metadata, navigation, and chapters

output

Word DOCX ebook with converted book structure and reader-specific styling

Do it in code

cli

ebook-convert input.fb2 output.docx

FAQ

Does this remove DRM?

No. DRM-protected ebooks are not supported and must be unlocked by rights holders before conversion.

Will my cover and table of contents survive?

Calibre preserves cover art, metadata, and navigation when the source includes them in a readable form.

Is MOBI the same as AZW3?

No. MOBI is older and more limited; AZW3/KF8 supports richer Kindle styling.

Can I set PDF paper size?

This pair does not produce PDF, so paper_size is not honoured.

Will page numbers stay the same?

Reflowable ebook conversions do not preserve fixed page numbers because readers repaginate text.

Related conversions

TXT to DOCX MD to DOCX HTML to DOCX DOC to DOCX ODT to DOCX RTF to DOCX RST to DOCX LATEX to DOCX PDF to DOCX

Everything you need

Browser-first privacy

CSV, JSON, XML, YAML, XLSX, and table conversions run locally when the source and target formats support it.

Warnings, not surprises

Formula drops, flattened arrays, sheet selection, and layout changes are surfaced as conversion warnings.

Batch and zip

Queue multiple files, download individual results, or package them into a zip for handoff.

API, CLI, MCP

Convert from browsers, scripts, automations, and AI assistants with the same warnings and outputs.

Team workspaces

Shared history, API keys, limits, and retention settings keep production conversions controlled.

Retention you control

Browser files never upload; server inputs auto-delete within 24 hours and outputs follow workspace retention.

Comparison

Why teams switch

Decision point

FileTypeConverters

Upload-only converters

Where data files are processed

CSV, JSON, YAML, XML, and spreadsheet files can convert in your browser.

Most tools upload every file to their servers first.

What you learn about fidelity

Warnings call out flattened arrays, dropped formulas, selected sheets, and layout changes.

Downloaded files often arrive with no explanation of what changed.

Batch + zip

Batch files and download individual results or one zip.

Batching is often paid-only or missing.

API, CLI, and MCP

Use the web app, automation, or an AI assistant with the same conversion behavior.

Many converters are web-form only.

Retention control

Browser files never upload; server inputs are deleted within 24 hours.

Retention is usually unclear or not configurable.

Price

Start with free browser conversion and clear paid limits.

Limits are often hidden behind upload steps or subscriptions.

Where data files are processed

FileTypeConverters: CSV, JSON, YAML, XML, and spreadsheet files can convert in your browser.

Upload-only converters: Most tools upload every file to their servers first.

What you learn about fidelity

FileTypeConverters: Warnings call out flattened arrays, dropped formulas, selected sheets, and layout changes.

Upload-only converters: Downloaded files often arrive with no explanation of what changed.

Batch + zip

FileTypeConverters: Batch files and download individual results or one zip.

Upload-only converters: Batching is often paid-only or missing.

API, CLI, and MCP

FileTypeConverters: Use the web app, automation, or an AI assistant with the same conversion behavior.

Upload-only converters: Many converters are web-form only.

Retention control

FileTypeConverters: Browser files never upload; server inputs are deleted within 24 hours.

Upload-only converters: Retention is usually unclear or not configurable.

Price

FileTypeConverters: Start with free browser conversion and clear paid limits.

Upload-only converters: Limits are often hidden behind upload steps or subscriptions.

Choose your plan

Free

$0/mo

50 conversions/month

50 conversions/mo
25 MB max file
No signup required

Get started

Starter

POPULAR

$8.99/mo

For regular conversion work

2-day trial for paid plans

500 conversions/mo
100 MB max file
API + MCP

Start free trial

Pro

$29.99/mo

For heavy teams

5,000 conversions/mo
1 GB max file
API + MCP

Start free trial