What are the best file converter software?

The best file converter software depends on what you want to convert (documents, video, audio, images, etc.), but a few tools stand out as top choices in their categories and as general “convert anything” solutions.

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### 1. Best *all‑around* and multi‑format converters

- **Convertify (Windows, offline, paid/free trial)**

A comprehensive **all‑in‑one converter** for Windows that supports **230+ formats**, batch conversion, AI upscaling, and background removal, and works **100% offline** for privacy.[3]

Best for: users who want a powerful desktop suite that handles documents, images, audio, and video with no cloud upload.

- **File Converter (Windows, free, open source)**

A lightweight tool that integrates directly into the **Windows Explorer right‑click menu** so you can convert and compress files in just two clicks.[6][4]

Best for: simple, fast conversion of common audio, video, and image formats from the context menu, with no ads or bloat.

- **All File Converter (Android, free with ads)**

A mobile app that converts many media types (audio, video, images, documents) via an online back‑end.[7]

Best for: quick conversions on Android when you’re okay using an online service behind the scenes.

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### 2. Best for **documents & office files**

- **LibreOffice (Windows/macOS/Linux, free, open source)**

Often recommended as the best **free Microsoft Office alternative**, and also a strong **document converter**: open DOC/DOCX, XLS/XLSX, PPT/PPTX, etc., then export to PDF, older Office formats, and open standards like ODT/ODS/ODP.[1]

Best for: converting large numbers of Office files to PDFs or open formats, or cleaning up compatibility issues.

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### 3. Best for **video conversion**

- **HandBrake (Windows/macOS/Linux, free, open source)**

Consistently rated as the **best free video converter**, with no feature locks or watermarks.[1]

Features: presets for devices, batch encoding, advanced controls (bitrate, codecs, filters), and reliable conversion to MP4/MKV with modern codecs.

Best for: anyone who regularly converts or compresses video for playback, streaming, or archiving.

- **Prism Video Converter (Windows/macOS, free/paid)**

A very easy‑to‑use video converter from NCH Software that converts videos to many different formats so they play on almost any device.[2]

Best for: users who want a simple interface and don’t need as many advanced controls as HandBrake.

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### 4. Best for **image & photo conversion**

- **XnConvert (Windows/macOS/Linux, free)**

Highlighted as a leading **free image converter** that shines at **batch conversion**.[1]

Features: supports hundreds of image formats, offers resizing, renaming, watermarking, and other transformations during conversion.

Best for: photographers and designers needing to convert or process large sets of images.

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### 5. How to choose the right converter

Consider:

- **Type of files**

- Mostly video → **HandBrake** or **Prism**

- Mostly images → **XnConvert**

- Office docs → **LibreOffice**

- Mixed media on Windows → **Convertify** or **File Converter**

- On Android → **All File Converter**

- **Privacy**

- Prefer offline: **Convertify**, **LibreOffice**, **HandBrake**, **XnConvert**, **File Converter** all run locally.[1][3][6]

- Online/mobile: tools like **All File Converter** send files to a server.[7]

- **Ease of use vs. control**

- Maximum simplicity: **File Converter** (right‑click), **Prism**.[2][4][6]

- Advanced tuning: **HandBrake**, **XnConvert**.

If you tell me which platforms you use (Windows/macOS/Linux/Android/iOS) and what file types you convert most often, I can narrow this to a short, tailored list.