Indie Software · 41 Standards · 1140+ Profiles · Global

Steel Structure Design
& Structural Analysis.
Free & Professional.

The most affordable professional steel design software — trusted by engineers in 120+ countries. Steel beam calculator, column verification, FEM analysis — per AISC 360, Eurocode 3, NBR 8800, IS 800, AS 4100. Free to start, no installation.|

1140+
steel profiles
41
design codes
0
DOF FEM solver
0%
web-based

Same standards the industry already trusts

AISC 360NBR 8800Eurocode 3AS 4100IS 800
Global Coverage

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.

Coverage
Low
Full
Native Standard

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 Outdated versions.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.

Powerful Features

Online Steel Design & Structural Analysis Software

Not just drafting — a complete steel beam calculator, column verifier, and FEM analysis platform.

10.0 m6.0 mHEB 200IPE 300
3D BROWSER EDITOR

Professional 3D Browser Editor

A full CAD experience running entirely in your browser. No downloads, no plugins — just open and start modeling.

  • Create bars and nodes in 3D space
  • Smart snaps: endpoint, midpoint, perpendicular
  • Precise dimension input
  • Full undo/redo history
  • Move, Copy, Mirror with ghost preview
Try the Editor
Pricing Comparison

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.

SoftwareAnnual CostYour Savings
SAP2000$4,500/yr
You save $4212
Robot Structural$3,000/yr
You save $2712
RSTAB / RFEM$3,500/yr
You save $0
Tekla Structural$5,000/yr
You save $0
STAAD.Pro$4,000/yr
You save $0
CalcSteel Pro (annual)$288/yr

Based on CalcSteel Pro annual plan at $24/mo. Free tier available with full editor capabilities.

Profile Library

1140+ steel profiles

International standards. Every shape you need.

W / I / H

Wide-flange and I-beam sections

How to Design Steel Structures Online

Four steps from concept to verified, code-compliant structural steel design.

01

Model your structure

Create bars and nodes in the 3D editor. Use templates or start from scratch.

02

Assign profiles & loads

Choose from 1140+ standard steel profiles and apply load cases to your structural members.

03

Analyze & verify

Run the FEM solver and verify members against NBR 8800, AISC 360, Eurocode 3, AS 4100, or IS 800.

04

Export & document

Generate engineering sheets and export professional PDF drawings with your company logo.

Pricing

Simple, transparent pricing

Start free, upgrade when you need to save and generate sheets.

Free

$0

Full 3D editor, 1,140+ profiles, 25 analyses/month. No credit card.

Start Modeling

Starter

/mo

50 analyses/month, unlimited projects, 2 sheets, clean PDF export.

Most Popular

Pro

/mo

Unlimited analyses & sheets, company logo, priority support.

Compare all features

48 of 57 features included in the Free plan

Feature
Free
Starter
Pro

48 features included free — no credit card, no time limit

One-time PIX payment · 30 days access

Built for professionals

Structural EngineersSteel FabricatorsArchitecture FirmsEngineering Students
No credit card required
Cancel anytime
25 free analyses

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 Free

No credit card. No login required. Just open and build.