Convert STP to IGES Online
Convert STP to IGES in seconds. STP (STEP) is the 3-letter extension for the STEP CAD standard; IGES's strength is this: still widely supported across older and current CAD software alike. No software installation required — everything runs in your browser.
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Why Convert STP to IGES?
This conversion comes up whenever you need exchanging exact surface/curve geometry between legacy CAD systems instead of exact engineering geometry exchange between CAD systems and manufacturers. STP (STEP) and IGES serve genuinely different purposes, so moving between them isn't just a formality.
IGES was built around exchanging exact surface/curve geometry between legacy CAD systems, which is precisely the gap STP (STEP) leaves open, since it's designed around exact engineering geometry exchange between CAD systems and manufacturers instead.
Our engine reads a file built around exact engineering geometry exchange between CAD systems and manufacturers and rebuilds it aiming to preserve this: still widely supported across older and current CAD software alike — rather than producing a generic, lowest-common-denominator result.
How to Convert STP (STEP) to IGES
- Upload your STP file.
- MiConvert converts it to IGES, aiming to preserve what makes IGES useful: still widely supported across older and current CAD software alike.
- Download the converted IGES file.
- Use it directly with most CAD systems.
Key Conversion Features
- Keeps the parts of your file that matter for exchanging exact surface/curve geometry between legacy CAD systems intact, even though the source was built for exact engineering geometry exchange between CAD systems and manufacturers
- Purpose-built for the shift from exact engineering geometry exchange between CAD systems and manufacturers to exchanging exact surface/curve geometry between legacy CAD systems, not a generic pass-through
- Built to handle the real-world quirks of files meant for exact engineering geometry exchange between CAD systems and manufacturers, not just a textbook version of the format
- Produces output ready for most CAD systems, picking up right where SolidWorks, Fusion 360, Inventor, CATIA left off
- Bridges the gap between STP (STEP)'s focus on exact engineering geometry exchange between CAD systems and manufacturers and IGES's focus on exchanging exact surface/curve geometry between legacy CAD systems
Video Tutorial
Learn how to change STP to IGES online incredibly simply and quickly. This tool maintains 100% of your original file's quality. 🔗 Access MiConvert tool here: https://miconvert.com/en/stp-to-iges?utm
Frequently Asked Questions
Will I lose anything converting STP to IGES?
Converting to IGES means adapting to a real constraint: represents a model as separate trimmed surface patches, not a unified solid. Anything STP (STEP) carries — built as it is for exact engineering geometry exchange between CAD systems and manufacturers — that has no equivalent there won't make the trip, but the core content converts faithfully.
Can I convert the file back from IGES to STP afterward?
Only what IGES actually carries can come back — anything specific to STP (STEP)'s role in exact engineering geometry exchange between CAD systems and manufacturers that didn't survive the original conversion won't reappear.
What happens to features specific to STP that IGES doesn't have?
STP (STEP)'s real strength — true B-rep geometry — exact surfaces and curves, not an approximation — has no equivalent once converted, since IGES's constraint is: represents a model as separate trimmed surface patches, not a unified solid.
Why would I need IGES instead of just keeping STP?
Mainly when your workflow specifically calls for exchanging exact surface/curve geometry between legacy CAD systems — that's IGES's whole reason for existing, and STP (STEP) isn't built to provide it, since it's focused on exact engineering geometry exchange between CAD systems and manufacturers instead.
Is this conversion free?
Yes — free for files up to 50MB, with a 100MB limit for registered accounts, no subscription required.