Is it free to convert between STEP and IGS?

Yes, Convert999 is 100% free. All conversions happen locally in your browser with no file size limits, no registration, and no watermarks.

.step

.igs

STEP vs IGS

Compare STEP CAD File and IGES File formats — understand the key differences and when to use each

Format Overview

STEP

STEP CAD File

STEP CAD File (.step) is a cad file format.

.stepcad

IGS

IGES File

IGES File (.igs) is a cad file format.

.igscad

STEP vs IGS: Feature Comparison

Feature	STEP	IGS
Full Name	STEP CAD File	IGES File
File Extension	.step	.igs
Category	cad	cad
Free to Convert	✓ Yes	✓ Yes
Browser Support	✓ All Browsers	✓ All Browsers
Convert to Each Other	✓ Yes	✓ Yes

When to Use STEP vs IGS

Use STEP when you need:

•Files in STEP CAD File format for maximum compatibility
•Industry-standard cad format support
•Wide software and platform compatibility

Use IGS when you need:

•Files in IGES File format for specific workflows
•Optimized cad format features
•Modern format advantages and smaller file sizes

Convert Between Them

STEP IGS IGS STEP

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Learn More About These Formats

STEP Converter IGS Converter

Frequently Asked Questions

What is the difference between STEP and IGS?

STEP (STEP CAD File) and IGS (IGES File) are both cad file formats. STEP files use the .step extension while IGS uses .igs. They differ in compression, quality, compatibility, and intended use cases.

Can I convert STEP to IGS for free?

Yes! Convert999 lets you convert STEP to IGS completely free, directly in your browser. No file upload to any server, no registration needed — your files stay private on your device.

Which is better, STEP or IGS?

It depends on your use case. STEP (STEP CAD File) may be better for certain workflows, while IGS (IGES File) excels in others. Consider factors like file size, quality, software compatibility, and your specific needs.

Is it safe to convert files on Convert999?

Absolutely. Convert999 processes all files 100% locally in your browser. Your files are never uploaded to any server, ensuring complete privacy and security.

STEP Converter

Convert from STEP

IGS Converter

Convert from IGS

File Tools

Compress, resize, merge

Convert to STEP

All sources → STEP

Convert to IGS

All sources → IGS

Format Statistics

Trends & data 2025

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Feature