What is a SM file?
The .SM file extension primarily represents a SMath Studio Document. Users create these files using SMath Studio, a free mathematical notebook program. The software uses these files to store mathematical calculations, matrices, text, and 2D or 3D graphs. Another highly popular use for the .SM extension is as a rhythm game stepchart file for StepMania.
How to open SM files?
You can open a mathematical .SM file using SMath Studio on Windows, macOS, or Linux. If your file is a song chart, you must use StepMania to load it. Because .SM has multiple possible meanings, we recommend using viewer.online/sm to identify the actual format of your specific file.
Best practices and troubleshooting
Always confirm the source of your .SM file before opening it. If you lack the original software, you can still inspect the data. Because most .SM files rely on plain text or XML, you can open them with a basic text editor like Notepad++ or Visual Studio Code. To share your math documents with others, you can convert them to accessible target formats like .PDF or .HTML on convert.guru.
Software and tools
The dominant tools for managing these files are SMath Studio and StepMania. Historically, the .SM extension also belonged to spaced repetition learning files in SuperMemo, benchmark files for the PSPLIB library, and screenshot files on older BlackBerry devices.
Summary
viewer.online/sm analyzes .SM files to identify their exact format and creator software, shows which programs can open the file, and usually previews it. Because primary .SM files use the known UTF-8 format, viewer.online/sm can safely open and display them online, eliminating compatibility problems.