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# MicMac for PC: How to Download & Install on Windows
## Introduction
If you want to turn ordinary photos into accurate 3D models and maps, MicMac is the free program that does it. It is a free and open-source photogrammetry suite developed by the French National Geographic Institute, IGN, and it rebuilds scenes, buildings and landscapes in 3D from sets of overlapping photos, with survey-grade accuracy. There is no payment, no account and no serial number, and the download from the official GitHub page is the complete program.
This guide explains what MicMac is, what it can and cannot do, what your PC needs to run it, and how to download and install it from the official website only. You will also get a first-use walkthrough that takes you from installation to a finished 3D model in a few minutes. By the end, you should be able to run MicMac on Windows and use it in a real project.
MicMac is best for photogrammetry, survey-grade 3D reconstruction, and research-style 3D modelling. Because it is free and legitimate, you do not need a cracked copy or an unknown download site. The official website provides the download, and the free version is a real, permanent tool, not a short trial.
## What Is MicMac?
MicMac is a free 3D reconstruction program that you install on your Windows PC and use to build 3D models from photos. In simple terms, it is a program where you feed in a set of overlapping photos of an object or a place, and it works out where each photo was taken, matches points between the photos, and rebuilds the scene as a 3D point cloud and mesh: you take the photos, run the commands, and get a model. You open a command window, run the steps, and build.
What makes MicMac useful is its accuracy and its openness. Because it comes from a national mapping institute, it is built for survey-grade results, with ground control points, camera calibration and dense matching, and because it is open source under the CeCILL-B licence, it is free forever with no licence server and no subscription. It also handles drone photos, aerial surveys and close-range object scanning. Three honest notes: MicMac is mostly a command-line tool, with only a few graphical helpers, so it has a steep learning curve; it is aimed at professional and academic users, so beginners will need to follow a tutorial; and the Windows binaries are older builds, so some newer features may need compiling from source.
## Key Features
– **Photo-to-3D reconstruction:** Photo-to-3D reconstruction turns sets of overlapping photos into 3D point clouds and meshes.
– **Survey-grade accuracy:** Survey-grade accuracy with ground control points and camera calibration for mapping work.
– **Dense matching:** Dense matching rebuilds fine surface detail from many photos at once.
– **Drone and aerial support:** Drone and aerial photo support covers mapping, surveying and landscape modelling.
– **Ground control points:** Ground control point support ties your model to real-world coordinates.
– **Open-source CeCILL-B licence:** An open-source CeCILL-B licence keeps MicMac free forever, with the source code public.
– **Windows, Mac and Linux:** Windows binaries, plus Mac and Linux builds, cover every desktop.
– **Free for research and mapping:** Free for research, mapping and modelling, with no payment and no time limit.
## System Requirements
– **Operating System:** Windows 10 or Windows 11, 64-bit
– **Processor:** A modern quad-core processor or better
– **RAM:** At least 8 GB of RAM for basic use, 16 GB or more for large photo sets
– **Storage:** Around 500 MB of free disk space for the program, plus room for photos and models
– **Graphics:** Any graphics card with OpenGL support
– **Other:** A stable internet connection for the download, a camera for taking photos, and a mouse for working in 3D
These are practical, modern Windows guidelines, not a word-for-word copy of an official specification table. The most important point is simple: MicMac is designed for normal Windows PCs, and a modest modern computer is enough to start.
## How to Download MicMac (Official Method)
The only safe place to download MicMac is the official website. Do not download it from random file mirrors or “free download” portals, because those copies may be outdated or bundled with unwanted software. The official site is the source of truth for the current version.
**Official download link:** https://github.com/micmacIGN/micmac
On the official MicMac GitHub page, open the Releases section and download the latest Windows binaries archive to your Downloads folder. There is no account, serial number or payment involved at any point. If a site asks you to pay for MicMac, or offers a cracked version of it, leave that site and return to the official GitHub page.
## Step-by-Step Installation
Follow these steps in order. MicMac is mostly a command-line tool, so you run it from a command window, not from a desktop icon. Take your time with the folder and runtime steps, because those are the steps that most often cause MicMac not to start on Windows.
1. **Open the official MicMac GitHub page** — Open https://github.com/micmacIGN/micmac in your browser.
2. **Open the Releases page** — Click on Releases on the GitHub page to see the available downloads.
3. **Download the Windows binaries** — Download the latest Windows binaries archive to your Downloads folder.
4. **Extract the archive** — Right-click the downloaded archive and choose Extract All, then open the extracted folder.
5. **Install the Visual C++ runtimes if needed** — MicMac needs Visual C++ runtimes to run. If it will not start, install the runtimes from Microsoft first.
6. **Open a command window in the folder** — Open a command window in the extracted MicMac folder, so you can run its commands.
7. **Test the install** — Run a MicMac command such as mm3d –help and confirm it prints its help text without an error.
**Tip:** MicMac is a command-line tool, so you run its commands from a command window in the MicMac folder. If a command is not found, check that you opened the command window in the right folder first.
## How to Build Your First 3D Model with MicMac
This walkthrough is a simple first project. It is not a full course, but it will help you see MicMac working on a real project and learn its main tools.
1. **Take overlapping photos** — Photograph your object from many angles, with each photo overlapping the next by half or more.
2. **Copy the photos into a folder** — Copy the photos into a new folder on your PC.
3. **Open a command window** — Open a command window in that folder.
4. **Find the camera positions** — Run the MicMac command that finds where each photo was taken, so the photos can be matched.
5. **Match points between photos** — Run the matching command, so MicMac finds the same points in different photos.
6. **Build the dense model** — Run the dense matching command, so MicMac rebuilds the object as a 3D point cloud and mesh.
7. **View the finished model** — Open the finished model in a 3D viewer and check it against your object.
## Is MicMac Free?
MicMac is free and open source under the CeCILL-B licence, developed by the French National Geographic Institute, IGN. You download it from the official GitHub page, install it, and use it without paying and without a time limit. There is no paid version of MicMac itself. Be aware of three honest limits: it is mostly a command-line tool, with only a few graphical helpers, so it has a steep learning curve; it is aimed at professional and academic users, so beginners will need to follow a tutorial; and the Windows binaries are older builds, so some newer features may need compiling from source.
That free status is important for this guide. All the steps here use the official download only, and they do not involve cracks, activators or licence keys. If you ever see a site offering a paid or cracked version of the free program, treat it as unsafe and return to the official site.
## Frequently Asked Questions
**Is MicMac safe to download?**
Yes, when you download it from the official website only. The official installer is the version made by the developer. Avoid third-party sites that bundle extra software or ask for payment for a free program.
**Does MicMac work on my Windows PC?**
Yes, in most cases. MicMac runs on Windows 10 and 11 (64-bit), and the system requirements above cover a normal modern PC. Check the official site for the exact current version if your PC is older.
**Is MicMac really free, or will it stop working?**
The free version described in this guide is not a short trial. It stays usable after installation. There is no paid edition of MicMac itself.
**Do I need a powerful PC to run MicMac?**
No, not for basic use. A modern Windows 10 or 11 PC with 4 GB of RAM or more can run it for simple projects. Larger projects with many objects and effects will benefit from more RAM and a faster processor, but you can start and learn on a normal home PC.
## Conclusion
MicMac is a useful, free addition to a Windows setup because it is a free open-source photogrammetry suite from the French IGN for turning photos into accurate 3D models, and it can be downloaded safely from the official site. Start with a small first project, learn one tool at a time, and build from there.
To get started, download MicMac from the official website here: https://github.com/micmacIGN/micmac Install it with the steps above, test it once, and then use it in your next project. With a little practice, it can become a regular part of your workflow.
**Official download link:** https://github.com/micmacIGN/micmac
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