Mohr's Circle Calculator

Enter the normal stresses σx and σy (in MPa) and the shear stress τxy (in MPa, sign matters — positive for counterclockwise couple). Press Compute to draw Mohr's circle: the circle's center sits at (σx+σy)/2 on the σ axis and its radius is √[((σx−σy)/2)² + τxy²]. The principal stresses σ1 and σ2 are the intersections with the σ axis (center ± radius), the maximum shear stress equals the radius, and the principal plane angle θp = 0.5 × arctan(2τxy / (σx−σy)). Read every derived value from the trace and export it if needed.