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SIGDEM Converter
Batch convert SIGDEM files with the same settings across a whole project, from a handful of layers to an archive of tiles.
How to Convert .sigdem Files in Bulk
1. Install reaConverter
2. Select SIGDEM Files
3. Start Conversion
Step by step
See It in Action
For quick and effortless SIGDEM 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 SIGDEM data as something anyone can open? reaConverter renders imagery and elevation grids into standard images and documents without QGIS or ArcGIS, and works through whole folders in one pass.
- Render imagery, elevation grids and scanned charts to TIFF, PNG, JPG or PDF
- Resize, crop and set DPI on the output in the same run
- Bring tiles, scenes and grids from many sources into one consistent format
- 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
User reviews
From those who tried it
Average User Rating:Last updated on July 29, 2026
Questions & Answers
SIGDEM files: Frequently Asked Questions
What are SIGDEM files?
SIGDEM (Scaled Integer Gridded DEM) is a binary elevation grid that stores heights as scaled integers. The file starts with a header of 132 bytes whose first six characters are SIGDEM, followed by the version, the EPSG number of the coordinate system, which is 0 when no number exists and the projection must be supplied in a separate .prj file, the offsets and scale factors for x, y, and z, and the extent and the number of columns and rows. Each cell then holds a 32-bit integer, and the real height is calculated as the offset plus the stored value divided by the scale, which makes it possible to keep, for example, millimeter precision without floating-point numbers. Empty cells hold the smallest possible 32-bit value. All numbers are big-endian. The coordinates of a cell refer to its lower-left corner, not to its center as in many other DEM formats, and this must be taken into account when the grid is combined with others. To convert a SIGDEM file to graphics, a program reads the header, converts the integers to heights with the scale and offset, marks the empty cells as transparent, and builds a grayscale heightmap, a colored elevation map, or a shaded relief picture. The result can be saved as PNG, JPEG, TIFF, or GeoTIFF with the coordinates. Supported by MapTiler Engine and ProRaster.
Can reaConverter open SIGDEM files?
reaConverter fully supports the SIGDEM file format – open, edit, and export SIGDEM files to any other popular file format with ease.
Do I need QGIS or ArcGIS to convert SIGDEM files?
No. reaConverter reads SIGDEM 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 SIGDEM to another format?
reaConverter is a user-friendly tool for converting SIGDEM files. Once installed on your computer, it allows you to convert all your .sigdem files at once with just a few clicks. You can even convert SIGDEM 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 SIGDEM online?
If you only want to convert a few SIGDEM files, you are welcome to try our free online SIGDEM converter.
How can I turn SIGDEM files on my computer to another format?
The best way to convert SIGDEM 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 SIGDEM.
How can I automate SIGDEM 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 SIGDEM 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 sigdem converter.
What else can I do with reaConverter?
Convert Gerber filesChange color spaceConvert RAW photosChange format settingsCopy metadata (EXIF, IPTC)
What formats can I convert a SIGDEM file to?
Discover More
Beyond SIGDEM conversion
Convert .sigdem 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.
