Free Online RAR to STL Converter

Use our free-to-use and fast RAR to STL file converter to expertly convert your RAR files perfectly into the STL file format, ready for further editing or use in your favourite STL file editing application. Our tool can also batch convert your RAR files, enabling you to convert up to 20 files in one go.

Select File(s)

Or drag and drop your files here to upload.
A maximum of 20 files can be uploaded at once.

Please note: Your RAR file, once uploaded to our server, will be deleted 15 minutes after upload, so please download your converted RAR file before this time.

Use the button above to select the RAR files you wish to upload; once selected, you can click the Upload button to start the conversion. Once all your files have been converted, you will be able to download your STL files either individually or all together in a compressed ZIP file.

How to Convert your RAR to STL Online?

Here are two simple steps to convert your RAR to STL using our fast and free RAR converter tool.

Upload your RAR file

Click the "Upload a RAR File" button, then select a RAR to upload. The maximum file size is 100MB.

Download your STL

Click the download link to receive your STL file.

Frequently Asked Questions

How can I convert my RAR file to STL?

First, click the "Upload..." button and select your RAR file to upload. Your RAR file will be uploaded to our servers. When the RAR to STL conversion has completed, you can download your STL file right away.

How long does it take to convert my RAR to STL?

We aim to process all RAR to STL conversions as quickly as possible; this usually takes around 5 seconds; however, this can be longer for certain files, so please be patient.

How accurate is the RAR to STL conversion?

We aim to provide the best conversion experience. Our tools are under constant review and development, with new features being added every week.

File format information for RAR and STL

Extension	RAR
Full Name	WinRAR
Type	Archive
Mime Type	application/x-rar-compressed
Format	Binary

The RAR file format is a popular compressed file format created by Eugene Roshal. Like other compressed archive formats, RAR offers high compression rates no matter what type of file you are compressing.

Along with files, the RAR format will compress whole folder structures. This structure is then restored once the RAR file is extracted. It is possible to split very large files over several RAR files where needed and also add password protection to secure the archive contents.

There are several applications that can open RAR files, the most popular being WinRAR, which has free options for extracting from and compressing files to a RAR archive.

Extension	STL
Full Name	Standard Triangle Language
Type	3D Model
Mime Type	application/vnd.ms-pki.stl
Format	Text
Opens With	Blender, MeshLab, CAD Assistant, DAZ Studio

The STL, or Standard Triangle Language, file format has been around since the '80s and is supported by most modern 3D modelling applications. In particular, the STL format has become something of a standard format within the area of 3D printing, despite the rise of more modern formats such as 3MF.

STL files come in two flavours: binary or text format. The text format is human-readable, making it easy to perform manual edits, but can lead to very large file sizes. As you can imagine, the binary format is much more compact and represents the majority of the STL files you are likely to encounter.

The format itself is very simple; the 3D model is represented by a sequential list of triangles, with each triangle defined with 3 points consisting of their X, Y, and Z positions, along with an additional vector that contains the face normal (the direction the face is pointing). There is an additional attribute block for each triangle; however, this is largely unused and thus unsupported.

Information for converting from RAR to STL

Our RAR archive converter will examine the contents of your RAR file and will look for any 3D model file that it may contain, and this, once found, will be extracted and converted to a 3D STL file ready for download.