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Pipefitter Field Calculator

Offsets, rolling offsets, parallel pipe cutbacks, pipe data, and Victaulic coupling references.

$9.99. Once. Forever. No subscription. No account. Works offline.

Coming Soon to the App Store

Pipefitter Field Calculator is currently in development and will be available on the App Store soon. Enter your email to be notified the moment it launches.

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What’s Inside

Free Features

  • Simple Offset Calculator — Rise and fitting angle (22.5°/30°/45°/60°/custom). Outputs travel, run, cutback per fitting. Live 2D diagram updates as you change values.
  • Rolling Offset Calculator — Rise, horizontal offset, fitting angle. Outputs true offset (diagonal), travel, run, cutback. Live isometric 3D diagram showing the geometry.
  • Feet-Inch-Fraction Math — Standalone calculator: +, −, ×, ÷ in feet-inch-fractions. Custom keypad with 1/8 through 7/8 fraction buttons for jobsite speed.

Full Unlock ($9.99 one-time)

  • Parallel Pipe Cutbacks — 2–6 lines, mixed pipe sizes per line, fitting angle, spread between lines, optional insulation thickness. Outputs individual cutbacks per line with insulation clearance warnings. Directly addresses real jobsite multi-line offset scenarios.
  • Odd-Degree Fitting Calculator — Generate any angle by mitering standard 90° elbows. Desired angle, pipe diameter, number of cuts (2–5 piece). Outputs cut angle per piece, mark distances, isometric view.
  • Back-to-Back / Compound Offsets — 90°+90° U-bends, 90°+X° compound transitions. Outputs center-to-center dimension, cut lengths, diagrams.
  • Pipe Data Reference — NPS 1/8” through 42”. Materials: Carbon steel (ASME B36.10), stainless (ASME B36.19), copper (K/L/M), PVC Sch 40/80, CPVC, brass. Data: OD, wall thickness, ID, weight/ft (empty + water-filled), internal area. Fitting CTE tables for 90° LR elbows, 45° elbows, tees, caps.
  • Victaulic Grooved Coupling Support — Series 77, 75, 07 dimensions by pipe size directly from Victaulic catalog. This unmet need appears in competitor reviews: “needs an option to use Victaulic fittings.” We answer it.
  • Pressure Loss / Flow Calculator — Pipe material, size, schedule, fluid type (water/steam/air), flow rate or velocity, pipe length, fitting count by type. Outputs pressure drop (PSI/100ft + total), velocity (ft/s), Reynolds number, flow regime (laminar/turbulent). Darcy-Weisbach with Moody friction factors. Hazen-Williams option for water systems.
  • Pipe Weight & Fill Calculator — Pipe size, schedule, material, length. Outputs empty weight, water-filled weight, volume, hydro test weight.
  • Accelerometer Slope & Plumb Meter — Two modes: (1) SLOPE MODE shows inches-per-foot drainage slope AND degrees live. Hold phone against pipe run, read slope directly. (2) PLUMB MODE digital bubble level for vertical risers. Tap Lock to freeze and auto-populate offset calc fields. Works offline in dark mechanical rooms and pipe chases.
  • Voice Input — “Twelve feet six and a quarter,” “two inch schedule forty,” “forty-five degree,” “carbon steel,” “eight inch rise four inch offset,” “Victaulic” — hands-free entry while holding pipe, welding, or on scaffolding.
  • Save & History — Save calculation snapshots with spool/job labels. On-device PDF export with inputs, outputs, diagrams. No cloud.

Why We Built This

Pipe Trades Pro, the market leader with 3,800 reviews and 4.8 stars, just moved to a subscription model. The same anger cycle as Construction Master Pro and ElectriCalc Pro. Blue-collar professionals hate subscriptions.

Pipe Trades Pro’s UI was designed 20 years ago to emulate a handheld calculator — not a native iOS app. Missing features that appear in user reviews: “no visual offset diagrams” and “needs an option to use Victaulic fittings.” Every competitor is missing Victaulic/grooved coupling support, a documented customer request.

FieldLab’s answer: $9.99 once. Victaulic Series 77/75/07 support bundled (only app to offer this). Live isometric offset diagrams that update as you type. Native SwiftUI dark mode (pipe chases are dark). Accelerometer slope meter in inches-per-foot format (the pipefitter’s native language). Voice input for hands-free entry in confined spaces. Works 100% offline with zero account.

Built for the Jobsite

  • Dark Mode Optimized — Mechanical rooms, pipe chases, trenches are dark. Default to dark mode with full light mode support. High-contrast slope/plumb display readable in pitch-black conditions and bright shop floors equally well.
  • Glove-Friendly — 48pt minimum tap targets. Voice input for hands-free entry while holding pipe, pulling wire, or mid-weld.
  • Works Offline — Zero internet required. No account. No login. Your data never leaves your phone. Pipe reference data is bundled and always available.
  • Math Accuracy — Every formula unit-tested against hand calculations. No approximations. Geometry errors are expensive and dangerous — we verify every calculation.

The Competition Moved to Subscriptions. We Won’t.

Pipe Trades Pro now charges a subscription after years of one-time purchases. Professional pipefitters with 3,800 reviews on the old model are furious.

Pipefitter Field Calculator costs $9.99. Once. Victaulic support included. That’s it.

We will never charge a subscription. Read why →

Try Our Free Calculators While You Wait