STP File — Open & Convert .stp Online
What Is a .stp File?
STP (.stp) is a cad file format. STP is the file extension variant of STEP format for 3D CAD data exchange. Created by ISO, this format is essential for engineers, architects, and manufacturers.
How to Open .stp Files
Upload your .stp file to OpenAnyFile and instantly view and measure it in your browser. No software installation required. Works on Windows, macOS, Linux, iPhone, and Android.
Everything About STP Files
Popular STP Conversions
Frequently Asked Questions
What is a .stp file?
A .stp file is a cad format called STP. STP is the file extension variant of STEP format for 3D CAD data exchange.
How do I open a .stp file without installing software?
Upload your .stp file to OpenAnyFile. Our browser-based tool instantly detects and displays it — no downloads needed.
What program creates .stp files?
.stp files are typically created by ISO.
Can I convert .stp to another format?
Yes. OpenAnyFile converts .stp to PDF, STL, OBJ, IGES, GLTF.
Is it safe to open .stp files online?
Yes. OpenAnyFile processes files in a secure, isolated environment. Files are automatically deleted and all transfers use HTTPS.
Can I open .stp on my phone?
Yes. OpenAnyFile works on all mobile browsers including iPhone and Android.