ASC → CGM · Windows

Convert ASC to CGM

Stop converting ASC files one by one. reaConverter processes entire folders to CGM automatically. Add files, pick settings, click Convert.

Online converters too slow for your ASC files? reaConverter works locally and handles unlimited batches. All processing runs locally on your PC, so your files stay private and secure.

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ASC to CGM
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ASCCGM
4.8

Converting files since 2001

Runs offline — nothing uploaded

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How to Convert Multiple ASC Files to CGM?

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 ASC files

Open reaConverter and add your ASC files. You can load individual files, entire folders, or even nested subfolders.

Drop your ASC files into the window or use File menu to browse and select folders.

Load your ASC files into reaConverter

3. Select CGM as output format

Choose CGM as the target format. Pick a destination folder or let reaConverter save files alongside the originals.

Select CGM as output format

4. Start ASC to CGM conversion

Hit Convert and let reaConverter do the work. The progress window shows status for each file in real time.

Start Conversion

After conversion, find your CGM files in the output folder. Click 'Show converted files' to open it directly.

Step by step

How It Works

reaConverter offers the fastest, simplest solution for converting your ASC files into CGM in seconds - all files processed on your PC for maximum privacy and speed.

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Deep Customization

Do more with your files

Converting ASC files for use in a workflow? 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.

Conversion features
Image editing

User reviews

What people say after the first batch

Average User Rating:4.8
Last updated on August 20, 2026
We faced a massive challenge: digitizing 20 years of CGM archives into PNG format. Initial estimates projected months of work, but reaConverter's powerful batch processing and resolution scaling let us complete the project in weeks. Most impressively, it handled even our pre-1994 vector files flawlessly—zero errors, perfect fidelity.
David McCullough
David McCullough
Satisfied Customer
Converting CGM files to SVG for our digital manuals used to be a nightmare until we found reaConverter. It preserves precise scaling and metadata flawlessly, making our workflow 3x faster with zero quality loss.
Charles Long
Charles Long
Aerospace Documentation Specialist
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
We deployed reaConverter across our department to standardize file formats for our archives. The command-line support and automation features integrated perfectly into our systems. Stellar performance and zero crashes—it just works.
David R.
David R.
IT Solutions Architect

FAQ

ASC to CGM Conversion

What are ASC files?

The ASC (Esri ASCII Grid) format stores raster geospatial data as plain text. Developed by the Environmental Systems Research Institute (ESRI), it describes a rectangular grid of cells using a short header — number of columns and rows, coordinates of the lower-left corner, cell size and a no-data value — followed by the cell values themselves, written row by row as ordinary numbers. Because the entire grid is human-readable text, ASC is widely used for exchanging elevation models, slope maps and other continuous surfaces between GIS packages that would otherwise share no common binary format.

What are CGM files?

CGM (Computer Graphics Metafile) is a format that contains vector graphics information (clip art, drawings) associated with graphics design or CAD programs. As opposed to other types of metafiles, such as EMF or WMF, CGM files are not only supported by Windows, but can be used on different platforms too. They are encoded using binary, character-based of clear-text encoding.

Can reaConverter convert ASC to CGM?

Yes! reaConverter instantly converts .asc to .cgm 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.

Can I convert ASC to CGM online?

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

How can I turn ASC files into CGM on my computer?

The best way to change ASCs to CGMs 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 ASC to CGM.

How can I automate ASC to CGM 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 ASC files to CGM using the command prompt?

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

What else can I do with reaConverter?

Convert RAW filesConvert PDFAdd text on picturesConvert microscopy filesPicture resizer

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