Sheet Metal & Fabrication Calculators
Develop printable patterns for cones, reducers, transitions, elbows, branches, hoppers and screw flights. Bend and pipe-layout tools show the true lengths, angles and assumptions needed to mark material before cutting.
Bend Allowance Calculator
Calculate bend allowance, bend deduction and setback for a sheet metal bend, with a diagram.
Cone Flat Pattern
Generate the flat (developed) pattern for a truncated cone from its top/bottom diameters and height.
Square to Round
Develop the flat-pattern panels for a square or rectangle-to-round duct or pipe transition by triangulation.
Reducer Layout
Develop the flat-pattern template for a pipe reducer, concentric or eccentric, including the fully flush case.
Segmented Elbow
Lay out a gored/lobster-back elbow's miter angles and per-piece flat pattern from diameter, bend radius, angle and piece count.
Duct Rolled Offset
Calculate rolled-offset travel, advance and roll angle, with a printable mitered-elbow cut template.
Screw Flight Pattern
Develop an annular-sector workshop blank for one screw-flight turn from outside diameter, shaft diameter and pitch.
Pipe Fitting Takeoff
Deduct user-supplied fitting center-to-end dimensions from field measurements to find a pipe cut length.
Offset Branch Template
Generate a full-wrap branch-pipe intersection profile with a signed axis offset and branch angle.
Pipe Offset Clocking
Convert vertical and lateral offsets into near/far-end clock positions and circumference marks from an established datum.
Truncated Pyramid Pattern
Develop the four true-size trapezoid panels for a centered rectangular truncated pyramid.
Hopper Flat Pattern
Develop four printable trapezoid panels for a centered rectangular hopper inlet and outlet.
Oblique Cone Pattern
Triangulate an offset-apex circular cone into a printable developed blank with true generator lengths.