Free weld joint strength calculator for fillet and butt welds. Check weld stress under axial, shear and bending loads. Calculates safety factor and pass or fail status.
I kept having to calculate weld joint strength checks in my work, comparing fillet welds to butt welds, checking if a weld would handle the load with a sensible factor of safety. The typical approach is to use Shigley's or IS 816 tables but translating those into a quick check for a specific geometry always took more time than it should.
This calculator handles fillet and butt welds under axial, shear and bending loads. It flags the safety factor and tells you directly whether the weld passes. I set FOS 2.0 as the threshold for a clear safe result, which is the common design practice, but you should always verify against your specific material and code requirements.