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MechanixCalc

Professional mechanical engineering calculations — all domains, one suite.

Engines validated to international standards
50Tools
9Domains
39+Standards
Live NowCore · Pro · Expert

AI engineering assistant —
built into your calculators.

Not a generic chatbot. The assistant sees your exact design — your numbers, your material, your results — and gives advice grounded in the standard.

  • "Why is my SF 1.2?" — it already knows your Von Mises, Sy, and fatigue limit.
  • Cites ISO 281, ISO 6336, VDI 2230 — whichever standard governs your tool.
  • Available across the calculator suite. Shaft, bearings, gears, fatigue, fluid systems.
Shaft Analysis Assistant
Goodman · Beam FEM
AI
Design loaded · 3 seg · 42CrMo4 · SF 1.2

Why is SF so low?

Von Mises is 387 MPa against Sy 900 MPa — that's fine. The issue is the Goodman fatigue limit: Se = 193 MPa with σm = 35 MPa and σa = 165 MPa gives nG = 1.2. Increase seg 2 to Ø70 mm → nG ≈ 1.8.

What material would help?

Ask about this design…
Early AccessFusion 360 · Expert

The MechanixCalc Copilot —
your calculators, inside CAD.

A chat copilot in Fusion 360 that reads the geometry you select, asks for the loads CAD can't know, and runs every number through the validated engines — numbers-only, your model never leaves your machine.

  • Reads your Fusion selection — faces, parameters, mass — as numbers, never your file.
  • Runs the same standards-cited engines behind all 50 calculators, server-side.
  • Numbers-only data flow — your CAD model stays on your machine.
Fusion Copilot
reads your selection
CAD
Selection read · Ø80.0 / L46.0 mm

Will this pin hold 12 kN?

Steady load, bronze bush? Running the bearing engine…

PASScontact pressure ok

22.61 MPa vs 25.0 · SF 1.11× · thin margin

Ask about a fit, a life, a bolt pattern…
Design Studio
Your Activity & Tools
Engineering Domains9 domains
Supported Standards39+ standards · featured selection below
ISO 281·Bearing life
ISO 6336·Gear strength
ISO 1219·Fluid power
VDI 2230·Bolted joints
EN 1993·Steel structures
DIN 2089·Springs
ASME VIII·Pressure vessels
ISA 5.1·P&ID symbols
IEC 60617·Electrical diagrams
ISO 3408·Ball screws
AGMA 2001·Dynamic factor Kv
ISO 286·Tolerances & fits
ISO 606·Chain drives
ISO 2408·Wire rope
ASME B31·Pipe stress
Getting Started
1
Choose a tool

Browse 50 engineering calculators by domain or search by keyword

2
Enter parameters

Input your design values with live unit conversion and real-time validation

3
Review results

Get instant engineering results with safety factor analysis and charts

4
Export

Download full PDF reports with branding for client deliverables