Pipe Offset Calculator

Pipe offset calculator and rolling offset calculator for pipefitters, plumbers, welders and

electricians: travel, run and cut length on top of the screen, the drawing right under them. See a

rolling offset in 3D and turn it with your finger before you cut. Works offline, with no ads jumping

in front of your numbers.

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.

THE ANSWER FIRST

Every tool opens with a worked example: the answers in big boxes on top, the drawing under them.

Type your offset or drag the slider and they change as you go. No "=" to press, no menus to dig

through.

PIPE OFFSETS

• Pipe offset calculator: travel and run for 11¼°, 22½°, 30°, 45°, 60° or any angle, with the

multipliers, or the fitting angle when the run is fixed

• Rolling offset calculator: true offset, travel, run and how far to roll the fitting, drawn in 3D

(drag to turn it, tap for the sizes)

• Travel to cut length on the same screen: pick LR, SR or 3R butt-weld elbows and the pipe size,

1/2" to 24" (ASME B16.9 center to end), or type your own take-out, and add the weld gap

• Parallel offsets: several pipes through the same offset, where each next pipe starts so the

spacing stays equal

PIPEFITTER CALCULATORS FOR THE SHOP

• Pipe cut length: center to center minus both fitting take-outs and gaps, with the elbow table or

your own fittings, 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, with

the exact multiplier next to the rounded one printed on your bender

• 90° stub-ups with take-up and gain for 1/2" to 1¼" EMT, an offset in the stub, or your own

bender's values saved under My bender

• 3-point and 4-point saddles, kicks and back-to-back 90s

• Every mark measured from the conduit end, in bending order, 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

TYPE IT LIKE YOUR TAPE READS

14 1/2", 5' 3 1/2", 3/4", 2.5m: feet, inches and fractions just work. Results in inches,

feet-inches or millimeters, rounded to 1/16" (or 1/8", 1/32"). Big app keypad with ft, in and

fractions, easy with gloves.

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, rolling offsets, 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, your numbers stay on 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: [email protected]

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.