PipeSizer vs FitterCalc

PipeSizer helps piping and process engineers screen pipe diameters quickly using flow rate, pipe material, schedule, liner, and traceable velocity ranges. Enter your design conditions and PipeSizer ranks candidate nominal pipe sizes by calculated velocity. The result highlights the best candidate, effective internal diameter, velocity status, and nearby alternatives so you can compare options without rebuilding a spreadsheet. KEY FEATURES • Rank candidate pipe diameters from your flow rate • Compare velocity against traceable recommended ranges • Support for clean water, process fluids, slurry, and utility lines • Carbon steel, stainless steel, HDPE, and common schedules or DR values • Optional liner allowance • SI and Imperial units • Save and reopen sizing results • Share results using the iOS share sheet • Send selected pipe data to Pump Mate • English, Spanish, French, and Portuguese • Fully functional offline PipeSizer is free and designed for fast engineering screening in the office or field. ENGINEERING NOTICE PipeSizer is a screening aid. Verify final selections against project criteria, applicable codes, manufacturer data, and a qualified engineering review.

The pipe trades calculator that shows its work. Offsets, rolling offsets, cut lengths, takeouts, cutbacks, elbow cut marks, pipe data, and slope — computed correctly, displayed in feet-inch-fractions, and verified against published handbook values. Every answer can show the exact formula with your numbers in it. If you can check it, you can trust it. PAY ONCE. OWN IT FOREVER. No subscription. No account. No ads. Works with zero signal — in the basement, on the rack, in the hole. BUILT FOR THE FIELD - Feet-inch-fraction keypad made for gloved hands — big keys, big text - Live diagrams that redraw as you type - Fitting-angle presets: 5.625° to 90°, plus custom - Metric mode throughout (mm in, mm out) - Tap any result to switch ft-in / inches / mm THE MATH IS THE PRODUCT - Take-outs from published ASME B16.9 dimensions — including the small-size values the simple formula gets wrong - Pipe data from ASME B36.10M published weights - Welder's gap handled per joint, adjustable, zero allowed - "Show My Work" on every calculation — formula, your numbers, full-precision result, final fraction FREE FOREVER Simple offsets (known & unknown angle), slope & drop, and the feet-inch calculator with paperless tape — full versions, no limits. Prove the math on a real job before you pay a dime. FITTERCALC PRO — ONE PURCHASE Cut lengths with take-outs and gap, rolling offsets, rolling cut lengths, cutback & elbow cut marks, full pipe data tables, and saved jobs with shareable cut lists. Found an answer you can question? The Show My Work screen has a report link. It gets fixed.