Pipe Offset & Conduit Bending

Pipe offsets, conduit bending & conduit fill, with diagrams. No pop-up ads.

Pipe offset and conduit bending calculator for plumbers, pipefitters and electricians: offsets, rolling offsets, mitered elbows, cut lengths, bend marks and conduit fill, drawn from your numbers. Works offline, with no ads jumping in front of them.

NO POP-UP ADS. EVER.
One small banner at the bottom, hidden while you type. No full-screen ads, no videos, nothing that clears your numbers when you hit a button.

SEE IT BEFORE YOU CUT OR BEND
Every result comes with a drawing: the offset with its travel and run, the rolling offset along the pipe and from the side, each segment of a mitered elbow, parallel runs with their start marks, the drain slope over its run, the conduit with every bend mark. Change a number and the drawing follows.

TYPE IT LIKE YOUR TAPE READS
14 1/2", 5' 3 1/2", 3/4", 2.5m: feet, inches and fractions just work. Results round to 1/16" (or 1/8", 1/32"), with feet-and-inches next to long lengths. Big app keypad with ft, in and fractions, easy with gloves.

PIPE OFFSETS
• Pipe offset: travel and run for 11¼°, 22½°, 30°, 45°, 60° or any angle, with the multipliers
• Rolling offset: true offset, travel, run and how far to roll the fitting, or the fitting angle for a set run
• Parallel offsets: several pipes through the same offset, where each next pipe starts so the spacing stays equal

PIPE FABRICATION
• Cut length: center-to-center minus both fitting take-outs and weld gaps, plus the take-out of an elbow cut to any angle
• Mitered elbow: segmented elbow from straight pipe, cut angle, long and short side of every segment, end pieces and take-out
• Pipe slope: drop over a run at ¼", ⅛" or any slope per foot, or the slope from a measured drop, with the IPC Table 704.1 minimums

CONDUIT BENDING (EMT, IMC, RIGID)
• Offsets: distance between bend marks and shrink for 10°, 22½°, 30°, 45°, 60° or any angle
• 90° stub-ups with take-up and gain for 1/2" to 1¼" EMT, or save your own bender's values
• 3-point and 4-point saddles, kicks and back-to-back 90s
• Marks measured from the conduit end, with a warning when a bend is too close to the end

CONDUIT FILL
• Fill % for EMT, IMC, rigid and PVC Schedule 40/80 with THHN/THWN-2 or XHHW-2 wire, from the NEC Chapter 9 tables
• The 53 / 31 / 40 % limit, the most wires of a size that fit, and the smallest conduit for them

ALSO IN THE BOX
• Feet-inch fraction calculator (tape measure math)
• Right triangle & squaring with the 3-4-5 check
• Construction unit converter
• Bubble level and inclinometer
• Free reference charts on the TrueOffset website: offset multipliers, conduit bending shrink, conduit fill and pipe slope

BUILT FOR THE JOB SITE
• Works offline: basement, crawl space, mechanical room with no signal
• High-contrast mode for full sun, plus dark mode
• Screen stays on while a calculator is open
• Remembers what you typed and keeps a history of your calculations
• Star the calculators you use most to pin them to the top
• Share any result by text or email
• English and Spanish, switch any time in Settings

No account, no sign-up, nothing leaves your phone.

WHY CLEAN SCREEN APPS
I got tired of apps that throw full-screen ads at you in the middle of a job, so I build apps with no pop-up ads. TrueOffset is the second one, after TrueSquare Calc.

Questions or a calculator you'd like added: xufengce209@gmail.com

Results are estimates. Conduit fill follows the NEC Chapter 9 tables; check your fittings' take-out, your bender's marks and your local plumbing and electrical codes before you cut or pull wire.