SDAT → PPM · Windows

Convert SDAT to PPM

SDAT to PPM offline, so survey, cadastral and client data never goes through an upload form. No file size limit and no per-file quota.

Tired of converting SDAT files one at a time? reaConverter processes entire folders to PPM automatically. Handles large batches reliably without crashes or timeouts. Survey and cadastral data stays on your machine, with no upload at any point.

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SDAT to PPM
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Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple .sdat Files to .ppm?

1. Download and Install reaConverter

First, grab reaConverter from the download button below. Installation is fast, and the software runs offline — no account or signup needed.

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Install reaConverter

2. Load your SDAT files

Add SDAT files to reaConverter. One file or a thousand, the process is the same. Everything runs locally on your machine.

You can drag-and-drop files, browse to a folder, or add entire directory trees including subfolders.

Load your SDAT files into reaConverter

3. Select PPM as output format

Set PPM as output format and select where to save your converted files. Customize quality settings if needed.

Select PPM as output format

4. Start SDAT to PPM conversion

Click the Convert button to start. reaConverter will process all your files with the settings you selected.

Start Conversion

When finished, your new .ppm files will be waiting in the destination folder.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your SDAT files into PPM without GIS software - all files processed on your PC for maximum privacy and speed.

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Technical note

How SDAT and PPM differ in practice

Every cell in an SDAT file holds a measurement rather than a colour, usually elevation in metres, running from sea level up to whatever the highest point in the tile happens to be. PPM stores brightness, so the conversion stretches that range across a grey or colour scale. What you get is a readable picture of the terrain, and it is the right thing for a relief map or a figure. What you no longer have is the data: sampling a pixel in the PPM returns a shade, not an altitude. SDAT carries georeferencing: a coordinate reference system, and the real-world position and ground size of every pixel. PPM has nowhere to record any of that. The picture transfers intact, the location does not, so the output cannot be dropped onto a map afterwards without being placed by hand. Keep the SDAT original if the data still has to go back into a GIS.

Map Data Workflow

Turn GIS data into something anyone can open

A map saved as PPM opens on any computer and any phone. reaConverter produces those from SDAT in batch, entirely offline.

  • Render every file in a folder to PPM with the same size and settings
  • Set DPI and output dimensions before the run, not afterwards
  • Pick up new data automatically with Watch Folders, or script the job from the command line

Everything runs on your PC, which matters for cadastral, utility and client data that should not pass through an upload form.

GIS data conversion

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on September 13, 2026
An excellent program! I use it regularly in my work - it supports nearly every file format imaginable. The interface is intuitive and runs flawlessly every time.
Roger Cook
Roger Cook
Happy User
For agencies handling confidential data, reaConverter eliminates cloud-upload risks while delivering unmatched conversion reliability. Our team uses it both in-office and remotely with identical results.
Jamal Bailey
Jamal Bailey
Satisfied Customer
Our volunteer team uses reaConverter to prepare images for fundraising campaigns. The learning curve was minimal, and the results are professional-grade. The customer support team even helped us customize a workflow — fantastic service!
Jason P. Bailey
Jason P. Bailey
Non-Profit Coordinator
An efficient all-in-one solution for image conversion and light editing, designed for maximum user-friendliness.
Elena Anderson
Elena Anderson
Happy User
Enable shell integration for lightning-fast file conversions directly from Windows Explorer.
R. Lewis
R. Lewis
Happy User
After 200+ conversions on my budget laptop (i3-1115G4/4GB RAM/Win11), reaConverter outperforms heavyweight tools. Zero crashes, low CPU usage during batch processing, and no internet dependency - exactly what professionals need.
Walter Morgan
Walter Morgan
Satisfied Customer

FAQ

SDAT to PPM Conversion

What are SDAT files?

SDAT is the data file of the SAGA GIS grid format. SAGA (System for Automated Geoscientific Analyses) is a free, open-source GIS widely used for terrain analysis, hydrology, soil science, climate studies, and other geoscientific work. A grid in this format is a map made of equal square cells, such as an elevation model, with one value in each cell. The .sdat file holds only these values in binary form, while a small text file with the same name and the .sgrd extension describes them: the size of the grid, its position, the cell size, the type of numbers, and the value that marks missing data. A history file with the .hgrd extension and a projection file with the .prj extension may accompany them. SAGA can also pack all of these files into one archive.

What are PPM files?

PPM or Portable Pixelmap files are image files included in Netpbm, an open source graphics program. The other widely used Netpbm formats are PGM (Portable Graymap) and PBM (Portable Bitmap). All three are image formats and are sometimes called collectively PNMs (Portable Anymap format). While PGMs contains grayscale images, PPMs include color images and they represent intermediary files used in the conversion of less known formats using the Portable Bitmap Utilities. PPM files are mostly operated on UNIX and Intel-based platforms.

Can reaConverter convert SDAT to PPM?

Yes! reaConverter instantly converts .sdat to .ppm with perfect quality preservation. With its batch processing feature, you can convert multiple files at once in just a few clicks. You can even convert images directly from Windows Explorer using the right-click menu — fast and convenient.

What is reaConverter used for?

reaConverter is a Windows converter for 800+ formats, GIS data among them. For SDAT to PPM it replaces the usual detour through QGIS, ArcGIS or ogr2ogr: add the files, pick the output format, and the whole batch converts offline. Surveyors, planners and engineering teams use it to pass data between GIS, CAD and everyday document formats.

Why choose offline conversion with reaConverter?

reaConverter is a software program that is used for offline files conversion. Your proprietary documents never leave your computer – essential for architects, engineers, healthcare and government contractors handling classified projects. Meets GDPR, HIPAA, CCPA, and corporate security policies by ensuring files never cross borders or third-party systems.

Can I convert SDAT to PPM online?

If you only need to convert a few SDAT files to PPM format, feel free to try our free online free online SDAT to PPM converter — perfect for small batches with no installation needed!

How can I turn SDAT files into PPM on my computer?

The best way to change SDATs to PPMs on your PC is to install 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 SDAT to PPM.

How can I automate SDAT to PPM files conversion?

reaConverter supports all the most useful automation features such as right-click сonversion and Watch Folders for the most efficient automated files conversion in any software of this type.

Is there a way to convert SDAT files to PPM using the command prompt?

reaConverter provides full access to all its features via Windows command line, including a high-performance command-line sdat to ppm converter for batch processing.

What else can I do with reaConverter?

Convert RAW filesConvert medical imagesPicture resizerVectorize imagesChange bit depth

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