The Pipefitter Calculator
Field math for working pipefitters and steamfitters. Offsets, rolling offsets, take-offs, miters, saddles, thermal expansion, and weights, each with a diagram that redraws as you type. Built to work on the jobsite, fully offline.
Stop doing pipe math by hand.
The Pipefitter Calculator replaces the scratch-paper trig, the worn trade book, and the guesswork that turns into a bad cut. Enter what you know, and it computes what you need, offsets, travels, take-offs, miter angles, saddle layouts, expansion, and weights, and draws the joint you're about to make so you can sanity-check it before the torch comes out. It reduces field layout errors and eliminates manual calculation, and it does all of it without a signal.
Ten modules of field math.
45° & 90° Offsets
Center-to-center, travel, and run for standard offsets. Enter two knowns, read the rest.
Rolling Offsets
True offset, travel, and roll for pipe that shifts in two planes at once.
Take-offs
Fitting take-off math so your cut length lands right the first time.
Mitered Turns
Miter angles and cut lines for fabricated elbows and segmented bends.
Saddle Calculations
Branch saddle and cope layout for welded and threaded tie-ins.
Thermal Expansion
Growth and contraction over a temperature range for a given material and length.
Pipe & Water Weight
Filled and empty weight by size and schedule for rigging and support spacing.
Reference Tables
Sizes, schedules, and constants you'd otherwise dig a book out for, built in.
Diagram-first. Offline-first.
- Draws what you're building. Most calculators render a live diagram that updates as you type, so the numbers always have a picture behind them.
- Works with no signal. Everything runs on the device, no connection needed in a basement, a boiler room, or the middle of a plant.
- Tuned for gloves and daylight. Big inputs, high-contrast layout, and a UI that gets out of the way.
- Yours once. One $19.99 purchase. No subscription, no ads, no account, no tracking.
Trades that lay out pipe.
Journeyman and apprentice pipefitters and steamfitters, UA members, HVAC and process-piping installers, and anyone who has ever redone a spool because the offset was off. If you cut, thread, weld, or hang pipe for a living, this is the calculator you keep on your phone.
Get The Pipefitter Calculator.
One-time $19.99 on Google Play. An iOS version is on the way.