PipeFab Pro: Offset Calculator

Pipe fitting calculator for pipefitters, steamfitters, sprinkler fitters, and welders—simple offsets, rolling offsets, miters, take-offs, and real cut lengths.

PipeFab Pro gives you the jobsite math you need in seconds—without intrusive video ads, without requiring an internet connection, and without a $40/year subscription for math that never changes.

Why Pipefitters Choose PipeFab Pro:
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★ REAL CUT LENGTHS (NOT JUST THEORETICAL TRAVEL)
Other calculators leave you hanging with theoretical triangle travel. PipeFab Pro automatically deducts standard ASME B16.9 butt-weld elbows (45°, 90° Long Radius, 90° Short Radius) so you know exactly what length of pipe to cut on the saw.

★ TAPE MEASURE FRACTIONS (NO CONFUSING DECIMALS)
Mike on the jobsite reads a tape measure, not raw decimals. PipeFab Pro outputs clean 1/16", 1/32", and 1/8" fractions with instant visual tolerance indicators (+) and (-).

★ 100% OFFLINE & BATTERY-SAVER DARK THEME
Works deep inside mechanical rooms, trenches, shipyards, and offshore rigs with zero cellular reception. The high-contrast industrial dark theme prevents glare under the sun and saves battery all shift.

★ NO SUBSCRIPTIONS. PAY ONCE, KEEP FOREVER.
A calculator does not have cloud server costs—so why rent your own math? Simple Offset and Unit Converter are 100% free forever. Unlock all 9 pro tools—3D Rolling Offset, Miter Cut, Branch Saddles, Flange Bolt Circles, Reducers, Pipe Weight, Pipe Expansion, Hydro Test, and Bolt Torque—with a single one-time lifetime purchase.

Core Jobsite Tools Included (11 calculators):
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1. SIMPLE OFFSET CALCULATOR
• Instant Travel, Run, and Multiplier (45°, 30°, 60°, 22.5°, or custom degrees).
• Real-time visual dynamic blueprint with dimension lines.
• Automatic elbow takeoff deduction for 1" to 12" standard pipes.

2. 3D ROLLING OFFSET CALCULATOR
• Calculate compound 3D offsets with Roll (Spread) and Rise.
• Outputs True Offset, 3D Travel, Plan Run, and Roll Angle.
• Interactive isometric 3D visualizer.

3. MITER CUT & CUTBACK CALCULATOR
• Accurate cut angles and cutback marking length for 2-piece, 3-piece, 4-piece, and 5-piece turns.
• Visual cutback diagram for marking lines around the pipe circumference.

4. BRANCH SADDLES & LATERALS (FISHMOUTH / COPE)
• 90° tee saddles and 45° laterals: branch cutback from peak to crotch.
• Heel-to-toe (long point to short point) marking for the cope.
• Header hole cut length × width, with branch-cannot-exceed-header validation.

5. FLANGE BOLT CIRCLES (PCD / BCD)
• ASME B16.5 flange presets or fully custom PCD and hole count.
• Adjacent chord distance, triangulation chords, angular step, and hole orientation.

6. REDUCER LAYOUT
• Concentric and eccentric reducers (FOB flat bottom / FOT flat top).
• Centerline offset E, slant height, apex distance, and maximum slope angle.

7. PIPE WEIGHT CALCULATOR (ASME B36.10M)
• Instant total lift weight and weight-per-foot (lb/ft) or kg/m.
• Presets for Schedule 40 standard pipes up to 12".
• Supports Carbon Steel, Stainless Steel (304/316), Aluminum (6061), and Copper.

8. INSTANT UNIT CONVERTER
• Bidirectional conversion between Decimal Inches, Tape Fractions, Feet, Millimeters, and Meters.

9. PIPE THERMAL EXPANSION (ASME B31.3)
• Straight-run growth and expansion loop sizing using Table C-1 coefficients.

10. HYDROSTATIC TEST PRESSURE (ASME B31.3)
• Test pressure at 1.5× design (Clause 345.4.2), 90% SMYS limit, and MAWP check.

11. BOLT TORQUE (ASME PCC-1 / VDI 2230)
• Target torque T = K × F × d at 50–70% of proof load, with ASME B16.5 bolt presets.

12. JOB HISTORY & REUSE
• Saves your last 50 calculations offline. Tap any recent job to instantly reload your spread and angle.

No ads. No accounts. No sign-up. No tracking. Just accurate industrial math when you need it.