Convert IGES to STP Online
Convert IGES to STP in seconds. IGES is an older CAD surface and curve exchange standard; STP (STEP)'s strength is this: true B-rep geometry — exact surfaces and curves, not an approximation. No software installation required — everything runs in your browser.
Download Started!
How would you rate your experience with MiConvert?
Why Convert IGES to STP?
STP (STEP) is the 3-letter extension for the STEP CAD standard, built around exact engineering geometry exchange between CAD systems and manufacturers. Converting from IGES — built around exchanging exact surface/curve geometry between legacy CAD systems instead — closes that gap.
The short version: IGES is optimized for exchanging exact surface/curve geometry between legacy CAD systems, STP (STEP) is optimized for exact engineering geometry exchange between CAD systems and manufacturers, and this converter exists for the moment those two needs don't line up.
IGES's limitation: represents a model as separate trimmed surface patches, not a unified solid. STP (STEP)'s strength: true B-rep geometry — exact surfaces and curves, not an approximation — it doesn't share that constraint.
How to Convert IGES to STP
- Upload your IGES file.
- MiConvert converts it to STP, aiming to preserve what makes STP (STEP) useful: true B-rep geometry — exact surfaces and curves, not an approximation.
- Download the converted STP file.
- Use it directly with SolidWorks, Fusion 360, Inventor, CATIA.
Key Conversion Features
- Fast turnaround, typically under a minute per file
- Bridges the gap between IGES's focus on exchanging exact surface/curve geometry between legacy CAD systems and STP (STEP)'s focus on exact engineering geometry exchange between CAD systems and manufacturers
- Free for files up to 50MB, 100MB for registered accounts
- Converts IGES into STP, aiming to preserve what matters most: true B-rep geometry — exact surfaces and curves, not an approximation
- Understands that IGES is an older CAD surface and curve exchange standard and STP is the 3-letter extension for the STEP CAD standard, rather than treating the conversion as a blind format swap
Video Tutorial
Changing a IGES file to STP has never been easier! Watch this detailed guide on how to do it completely free right in your web browser. 🔗 Visit MiConvert: https://miconvert.com/en/iges-to-stp?utm_so
Frequently Asked Questions
Is the conversion from IGES to STP reliable?
Straightforward files convert reliably. IGES's limitation — represents a model as separate trimmed surface patches, not a unified solid — combined with STP (STEP) expecting exact engineering geometry exchange between CAD systems and manufacturers, means unusual or edge-case source files can occasionally need a second look.
What software works with the converted STP file?
STP (STEP) is used by SolidWorks, Fusion 360, Inventor, CATIA. If you were working with most CAD systems (which produces IGES), this conversion is the direct bridge between the two.
Why would I need STP instead of just keeping IGES?
Mainly when your workflow specifically calls for exact engineering geometry exchange between CAD systems and manufacturers — that's STP (STEP)'s whole reason for existing, and IGES isn't built to provide it, since it's focused on exchanging exact surface/curve geometry between legacy CAD systems instead.
Do I need any special settings before uploading my IGES file?
No special setup is required — upload the file as-is. IGES files meant for exchanging exact surface/curve geometry between legacy CAD systems convert most predictably; unusually exported or non-standard files are the most common reason a specific one might need extra attention.
Is there a file size limit for this conversion?
Free conversions handle files up to 50MB; registered accounts get up to 100MB.