Free steel design software:
from 3D model to a
code-verified report.
Model in 3D, run FEM analysis and verify every bar to AISC 360, Eurocode 3 and NBR 8800 — then export BIM/IFC, DXF and PDF.
No credit card · free plan, no expiry
Same standards the industry already trusts
41 Design Standards · 120+ Countries
Steel, aluminum, and stainless steel verification — from NBR 8800 in Brazil to IS 800 in India, Eurocode 3 across 30+ European countries, and AISC 360 in the Americas. Hover to see coverage details.
41
Design Standards
159+
Countries Covered
4
Materials
Free Alternative to SAP2000, CYPE 3D & Robot Structural
The same calculations. The same design standards. The same verified results — at a fraction of the cost. Every engineer deserves access to professional steel design software.
The traditional approach
Expensive licenses
$3,000–$15,000/year for a single seat. The same formulas, the same standards — just locked behind a paywall.
Workarounds and compromises
When software is inaccessible, engineers find alternatives. Outdated versions. Unofficial sources. No updates, no security, no support.
Locked to a desktop
Install on one machine, tied to one OS. Work from a different computer? Start over.
Weeks to learn
Traditional software requires extensive training before you can be productive.
The CalcSteel way
Start free, scale affordably
Full 3D editor at $0. Pro features from $9/mo. That's less than what the giants charge per day.
100% legitimate, always current
Regular updates, full support, clean licensing. Engineering deserves proper tools.
Any browser, any device
Chrome, Firefox, Safari. Windows, Mac, Linux. Your structures go where you go.
Productive in minutes
Modern UI designed for structural engineers. No course required.
The same engineering. Without the corporate price tag.
Every engineering school should have CalcSteel.
Steel design is learned by doing — with a real tool, not just the whiteboard. That's why CalcSteel is free for education: students and labs, at any university in the world. Our goal is to be in every engineering school.
- Free access for students and whole classes
- Runs in the browser — any lab, no install
- Course and teaching material for the professor
Steel Design Software — 98% Less Than Traditional Tools
Same AISC 360, Eurocode 3, NBR 8800 design checks. Same verified results. CalcSteel Pro costs $24/month — not $15,000/year.
Based on CalcSteel Pro annual plan at $24/mo. Free tier available with full editor capabilities.
Not just a model. The entire steel project.
From sketch to code-verified design — analysis, connections, LSF and loads in one place.
Forces and diagrams — instantly
3D finite-element solver: axial, shear and bending moment for every bar, with reactions and load combinations.
Connections designed and detailed
Column base plates with anchors, fully verified — and the detailing exports to PDF and DXF.
LSF walls with openings
Studs, tracks, headers and openings — the real wall framing, ready to fabricate.
NBR 6123 wind, automatic
Enter V₀ and the terrain — we do the rest. Roofs are detected from the geometry and pressures land on every bar.
How to Design Steel Structures Online
Four steps from concept to verified, code-compliant structural steel design.
Model your structure
Create bars and nodes in the 3D editor. Use templates or start from scratch.
Assign profiles & loads
Choose from 1140+ standard steel profiles and apply load cases to your structural members.
Analyze & verify
Run the FEM solver and verify members against NBR 8800, AISC 360, Eurocode 3, AS 4100, or IS 800.
Export & document
Generate engineering sheets and export professional PDF drawings with your company logo.
Simple, transparent pricing
Start free, upgrade when you need to save and generate sheets.
Starter
50 analyses/month, unlimited projects, 2 sheets, clean PDF export.
Cancel anytime
Pro
Unlimited analyses & sheets, company logo, priority support.
Cancel anytime
Compare all features
48 of 57 features included in the Free plan
48 features included free — no credit card, no time limit
What are you designing today?
Warehouse, roof, truss, mezzanine… open a ready-made model and CalcSteel analyzes and verifies it to code — in your browser, no install.
Free tools for engineers
No signup · instant results · same FEM engine
1,309 profiles · NBR 8800 · AISC 360 · EC3
Built for professionals
Frequently Asked Questions
Start Designing Steel Structures — Free
Join engineers in 120+ countries using free steel structure design software with professional-grade analysis.
Start Engineering FreeNo credit card. No login required. Just open and build.