FabricatorPro
iOS App
Available on the App Store
FabricatorPro
30 precision calculators for metal fabricators — miters, pipe saddles, hopper patterns, and shop references.
Cut, weld, and build with confidence. FabricatorPro brings pipe saddles, cone and pyramid developments, gear train math, cutting optimization, and every reference chart you use daily into one offline iOS app.
30 tools
across 7 categories
1:1 PDF
printable templates
DXF export
for CAD & CNC
Works offline
no signal needed
Metric & imperial
live unit switching
2D & 3D previews
on every fit-sensitive tool
Features
Every calculation, one tap away
FabricatorPro is the shop toolbox you can pull out with one hand. 30 purpose-built calculators across angles, pipe cuts, hopper patterns, gate geometry, workshop math, and reference charts — each one with clean 2D diagrams, optional 3D previews, and 1:1 PDF templates you can print or trace directly onto stock. Works fully offline, supports metric and imperial throughout, and stays out of your way while you work.
Angles, Miters & Joints
Simple miters, compound miters, profile join angles, and a full Pythagoras / 3-4-5 solver — plus a squareness table so frames go together right the first time.
Pipe Saddles & Fish Mouths
Round-on-round and round-on-flat templates, square-on-round, and Y-pipe connectors. 2D developed patterns with 3D preview, ready to print 1:1 and wrap around the pipe.
Hoppers, Cones & Transitions
Develop truncated cones and pyramids, round-to-square and rectangle-to-round transitions, plus auger flight flat patterns — no more trial-and-error on sheet stock.
Gates & Fence Geometry
Evenly space vertical bars with child-safety presets, plan sliding gates on sloped terrain, and balance swing gates with precise counterweight torque math.
Workshop Power Tools
Cutting Optimizer uses first-fit-decreasing bin-packing to minimize bar waste. Gear Train RPM solves multi-stage ratios. Hydraulic Cylinder sizes bore, force, and pressure.
Drill, Tap & Torque Charts
Offline-ready thread references — metric M2-M30 and UNC/UNF — with tap drills, clearance holes, bolt torques by strength class, and a live unit converter.
Complete toolbox
30 tools across 7 categories
Every calculator is built around real fabrication workflows. Free tools are free forever — Pro unlocks everything.
Angles & Cuts
5 toolsFrame joints, compound cuts, and squareness checks.
- Free
Miter Calculator
Cut angle and cut length from joint angle and profile width.
- Free
Compound Miter
Two-plane miter + bevel for crown molding, sloped frames, and roof work.
- Pro
Profile Join Angle
Joins two profiles at arbitrary directions with gap/overlap analysis.
- Free
Bisector
Angle bisector with profile offset calculation.
- Free
Pythagoras / 3-4-5
Right-triangle solver, diagonal squareness check, and law-of-cosines.
Pipe Cuts
5 toolsSaddle joints, fish mouths, and tube intersections.
- Free
Round on Round
Saddle / fish-mouth template with 2D pattern and 3D preview.
- Free
Round on Flat
Pipe-on-plate elliptical cut as a developed sine-wave pattern.
- Pro
Square on Square
Flat pattern for each face when square tubes intersect at any angle.
- Pro
Square on Round
Square-tube-on-round-pipe intersection — each face solved independently.
- Pro
Y-Pipe Connector
Two branches merging into one outlet. 2D schematic and 3D preview.
Hoppers & Funnels
5 toolsSheet-metal flat patterns for cones, transitions, and augers.
- Free
Truncated Cone
Round funnel / reducer pattern — annular sector with full sheet layout.
- Pro
Truncated Pyramid
Square-funnel panels with shared edges and fold lines.
- Pro
Round to Square
Transition piece from round to square — 4 corner triangles + 4 curved panels.
- Pro
Rectangle to Round
Asymmetric rectangle-to-round transition, multi-panel development.
- Pro
Auger Screw
Helical flight pattern — developed radii, sector angle, and material needed.
Gates & Fences
3 toolsBar spacing, sloped rails, and counterweight balance.
- Free
Bar Spacing
Evenly distribute bars by count, max spacing, or target spacing.
- Free
Sliding Gate Slope
Post heights, ground clearance, and real rail length on uneven ground.
- Pro
Gate Counterweight
Swing and cantilever gate torque balance with hinge-load analysis.
Workshop
3 toolsCutting lists, drive trains, and hydraulic sizing.
- Pro
Cutting Optimizer
First-fit-decreasing bin packing with kerf, waste %, and visual layout.
- Pro
Gear Train RPM
Multi-stage ratios — output RPM, torque, efficiency, and rotation.
- Free
Hydraulic Cylinder
Force, bore, pressure, speed, stroke time, and oil volume — hydraulic or pneumatic.
Geometry & Tools
6 toolsPolygons, arcs, weights, stairs, and thermal expansion.
- Free
Polygon Calculator
All dimensions, angles, area, and perimeter for any regular polygon.
- Free
Circle Division
Divide a circle into N equal parts with a 1:1 wrap-around paper template.
- Free
Arc Length
Arc, chord, sagitta, radius — solve the rest from any two inputs.
- Pro
Weight Calculator
Steel, stainless, aluminum, and copper by sheet, pipe, angle, flat, or round.
- Pro
Stair Calculator
Rise, run, stringer length, and angle with Blondel comfort check.
- Pro
Thermal Expansion
Linear expansion for common metals given length and temperature change.
Utilities
3 toolsReference charts always in your pocket.
- Free
Unit Converter
Length (with fractional inch), area, weight, pressure, temperature, torque.
- Free
Drill & Tap Chart
Searchable metric (M2-M30) and UNC/UNF with tap drill and clearance sizes.
- Free
Bolt Torque Chart
Torque by bolt size and strength class, dry and lubricated, with clamp force.
Pricing
Freemium — free to start, Pro when you need it
Sixteen core tools are free forever — including Miter, Round on Round, Truncated Cone, Bar Spacing, and the full Drill & Tap, Torque, and Unit Converter charts.
Unlock every tool, unlimited saved calculations, DXF export, and full 2D + 3D previews with a monthly subscription or a one-time lifetime purchase.
Gallery
See it in action
A quick look at the tools you'll reach for every day.
Every tool, one tap away
Ready to ship cleaner cuts?
Download FabricatorPro and keep precision math on the shop floor, in your pocket.