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BIG Converter
Batch BIG conversion with built-in editing. reaConverter lets you resize, crop, and adjust during export.
How to Convert .big Files in Bulk
1. Install reaConverter
2. Select BIG Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless BIG file handling on your PC, reaConverter offers powerful conversion tools with batch processing. Best of all, it works entirely offline — ensuring your sensitive data never leaves your computer.
Extra Tools
Do more with your files
Converting BIG files for use in a larger project? reaConverter offers many ways to process files, so you can customize them according to your requirements.
Our range of editing options includes auto-processing options such as auto-rotate, auto-crop, watermarking and more. Change Color Space, copy Metadata, set DPI, manage ICC Profile, control Bit Depth.
User reviews
From those who tried it
Average User Rating:Last updated on June 29, 2026
Questions & Answers
BIG files: Frequently Asked Questions
What are BIG files?
The Michelin maps are recognized by the BIG file extension. These maps have a rich heritage dating back to 1905 when the first printed version was introduced in France. Designed primarily for motorists, the Michelin maps have now transitioned into the digital age and are readily available in digital format.
Can reaConverter open BIG files?
reaConverter fully supports the BIG file format – open, edit, and export BIG files to any other popular file format with ease.
How do I change BIG to another format?
reaConverter is a user-friendly tool for converting BIG files. Once installed on your computer, it allows you to convert all your .big files at once with just a few clicks. You can even convert big images directly from Windows Explorer using the right-click menu — fast and convenient.
Can I convert BIG online?
If you only want to convert a few BIG files, you are welcome to try our free online BIG converter.
How can I turn BIG files on my computer to another format?
The best way to convert BIG files on your PC is to get a quality piece of software, such as reaConverter. This software is extremely efficient in managing a wide range of batch files conversions, including conversion from BIG.
How can I automate BIG files conversion?
reaConverter supports all the essential automation features, such as right-click сonversion and Watch Folders, for the most efficient automated file conversion in any software of its kind.
Can I convert BIG files using scripts or the command-line interface?
reaConverter provides full access to all its features from the Windows command-line shell, including the command-line big converter.
What else can I do with reaConverter?
Convert Gerber filesConvert picture color spaceConvert vector filesChange image DPIConvert GIS files
What formats can I convert a BIG file to?
Discover More
Beyond BIG conversion
Convert .big files in batches of any size, with editing and processing applied along the way. The same tool also handles 700+ other formats, including CAD, medical imaging, and GIS.
