WeldSpec Pro

WeldSpec Pro is the go-to welding engineering calculator for professionals and students. Calculate weld strength, heat input, preheat temperature, electrode selection, joint efficiency, and more — all in one powerful, intuitive tool. KEY FEATURES: • Weld joint strength & load capacity calculator • Heat input & interpass temperature control • Preheat temperature per AWS D1.1 / EN 1011 • Electrode consumption estimator • Fillet & butt weld sizing tools • Carbon equivalent (CE) calculator • Duty cycle & amperage guide Designed for structural engineers, welding inspectors, fabricators, and engineering students. WeldSpec Pro brings professional-grade calculations to your pocket — fast, accurate, and always available offline.