Pipefitter's Mate: Pipe Offset

Stop scrap. Pipefitter's Mate is the offset calculator built for real pipefitters — fast enough for the jobsite, accurate enough for the fab shop.

Type your run and offset. The app gives you exact cut lengths, takeoffs, setbacks, weld gaps, and a visual spool diagram you can take to the saw. From simple 45° offsets to compound and rolling offsets — same workflow, same speed.

WHAT IT DOES • Pipe offset calculations: 45°, 22.5°, 11.25°, 60°, custom angles • Rolling offsets and compound offsets • Cut length, travel, takeoff, setback — all displayed at once • Weld gap math for multi-stick spools (gap is per joint, not per pipe end) • ASME B16.9 elbow dimension reference built in • Visual spool diagram updates as you type • Catches input errors before you cut steel (12-rule validation engine)

WHO IT'S FOR Pipefitters, steamfitters, welders, plumbers, sprinkler-fitters, gas-fitters, HVAC pros — apprentice or journeyman. If you lay out pipe for a living, this is your calculator.

BUILT FOR THE JOBSITE • Works fully offline — no signal, no problem • No ads, no login, no account • Imperial and metric, switch instantly • Dark mode for the welding shack • Keep-screen-on so the phone doesn't sleep mid-layout

QUESTIONS, BUGS, FEATURE REQUESTS Visit pipefittersmate.com — every email gets read and fixes ship fast.