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001 Converter
001 files usually open only in GIS software. reaConverter reads them directly and converts whole folders into formats colleagues and clients can use.
How to Convert .001 Files in Bulk
1. Install reaConverter
2. Select 001 Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless 001 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.
GIS Toolkit
Do more with your GIS data
Need 001 data in someone else's software? reaConverter moves layers between GIS, CAD and document formats without QGIS or ArcGIS, and works through whole folders in one pass.
- Move layers between GIS formats such as Shapefile, GeoJSON, KML, KMZ and GPX
- Bring map data into CAD as DXF or DWG, and turn CAD drawings into Shapefiles
- Render maps to PDF, SVG, PNG or JPG for reports, slides and print
- Convert incoming survey and field data automatically with Watch Folders
- Script GIS conversions from the command line for pipelines and scheduled jobs
- Keep cadastral, utility and client data on your PC: nothing is uploaded
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Average User Rating:Last updated on July 27, 2026
Questions & Answers
001 files: Frequently Asked Questions
What are 001 files?
001 (IHO S-57 ENC update cell, number 1) is an update file that changes the data of one base chart cell. It follows the same ISO/IEC 8211 data structure as the base cell but records changes instead of a full data set: each record states whether a feature is inserted, deleted, or modified, and which feature and which of its attributes or spatial links are affected. The file bears the same name as the base cell, and its extension is the number of the update, from 001 up to 999. Updates must be applied in strict order, so .001 must be followed by .002 and so on, with no gaps, and each belongs to a specific edition of the cell, with the numbering starting again at 001 after a new edition, which has the extension .000. The catalogue file CATALOG.031 of the exchange set lists the update files together with their dates, and updates may arrive in a separate exchange set from the base data. In encrypted sets, they are also compressed and protected by the S-63 scheme. To convert chart data to graphics, a program reads the base cell, applies all updates in order, and draws the result as a picture of the current chart, saved as PNG, JPEG, TIFF, or GeoTIFF. Reading the update alone is not meaningful. Supported by FME, Surfer, Grapher, and ArcGIS.
Can reaConverter open 001 files?
reaConverter fully supports the 001 file format – open, edit, and export 001 files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert 001 files?
No. reaConverter reads 001 files on its own, so the conversion needs no GIS installation and no licence. It handles whole folders at once, which suits survey archives, tile sets and data deliveries that have to reach people working in other software.
How do I change 001 to another format?
reaConverter is a user-friendly tool for converting 001 files. Once installed on your computer, it allows you to convert all your .001 files at once with just a few clicks. You can even convert 001 files directly from Windows Explorer using the right-click menu — fast and convenient.
Why choose offline conversion with reaConverter?
Keep your sensitive data 100% private with offline processing that never exposes files to cloud risks. Our software meets strict compliance standards (GDPR, HIPAA, CCPA) while handling confidential documents for legal, healthcare and financial sectors.
Can I convert 001 online?
If you only want to convert a few 001 files, you are welcome to try our free online 001 converter.
How can I turn 001 files on my computer to another format?
The best way to convert 001 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 001.
How can I automate 001 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 001 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 001 converter.
What else can I do with reaConverter?
Convert GIS filesConvert Gerber filesChange color spaceConvert PDF filesAdd text on photos
What formats can I convert a 001 file to?
Discover More
Beyond 001 conversion
Convert .001 files in batches of any size, with editing and processing applied along the way. The same tool also handles 800+ other formats, including CAD, medical imaging, and GIS.
