Conduit offset bends allow a run of conduit to move around an obstruction while remaining parallel to the original path. An offset consists of two bends of equal angle — the most common being 30° and 45° offsets. The two key measurements are the offset distance (how far the conduit needs to shift) and the travel distance (how far apart the two bends must be placed, measured along the conduit). Travel distance is calculated as: offset distance ÷ sin(bend angle). The shrinkage constant — how much the conduit shortens due to the offset — must also be accounted for when cutting conduit. This calculator provides both the travel distance between bends and the shrinkage for your offset.
6" offset at 30°: Travel = 6 / sin(30°) = 6 / 0.5 = 12". Mark at 12" between the two 30° bends. Shrinkage constant for 30° offset = 0.25 × 6" = 1.5". Cut the conduit 1.5" shorter than if the run were straight.
This is a variant of the full Conduit Bending Calculator — which supports all bend types with live 3D visualization and supports EMT, rigid, and PVC conduit sizes.
Try all options in the full Conduit Bending Calculator →