Bend Logic: Conduit Bending

Bend Logic is a conduit bending calculator and electrical reference app built for working electricians — apprentices learning the math, journeymen running pipe in the field, and foremen who need every bend to land right the first time. Punch in your numbers in tape-measure fractions. Get bend marks, travel, shrink, and a clean visual layout in seconds. No decimal conversions. No paper. No re-bending pipe because the offset came up short. WHAT YOU CAN CALCULATE Simple offsets — travel, shrink, and bend marks for any angle Rolling offsets — true offset, travel, and roll for offset-and-roll runs 3-point and 4-point saddles — full mark layouts with field-reference and center-reference modes Parallel offsets and parallel kicks — keep parallel runs spaced correctly through obstacles Matching-center offsets and matching-center kicks — line up bends across a rack Segmented 90s — spacing, degrees per shot, and developed length Compound 90s around squares, rectangles, and circles — for wrapping obstacles cleanly Field Matcher — reverse-solve the angle of a bend you’ve already made from its rise and travel, and find the closest standard angle BUILT FOR REAL BENDING, NOT JUST MATH Bender profiles for Milwaukee, Klein, and IDEAL — uses each manufacturer’s published deduct and take-up values where available, instead of one generic number Tradesman Keyboard — a custom fraction keypad so you enter measurements the way they read on your tape CAD-style bend visuals — every result shows a labeled layout so you know exactly where the arrow, star, and tape marks go Imperial and metric units Field Mode — high-contrast, glove-friendly UI for jobsite readability ELECTRICAL REFERENCE TOOLS Box fill calculator — NEC 314.16-style box volume sizing for common conductors and devices Conduit fill — built-in fill data for layout planning Voltage drop — quick estimates using standard formulas Ampacity reference — NEC 310.16 copper ampacities NEC reference lookups in one place SAVE AND REUSE YOUR WORK Rack Log — save important calculations with labels, tape-ready fractional marks, and a completed flag so you can track what’s been physically run PDF export for Box Fill and Voltage Drop — clean reports for documentation and submittals WHO IT’S FOR Apprentices learning conduit math and bend layout Journeymen who want faster, more accurate field calculations Foremen and leads who need repeatable, reviewable layouts Anyone running EMT, rigid, IMC, or PVC who wants the math handled right WHY ELECTRICIANS USE BEND LOGIC Cut down on wasted pipe and re-bends Stop converting decimals to 16ths in your head Get visual confirmation before you put a stick on the bender Keep your bend math, rack layouts, and code references in one app Work the way the trade actually works IMPORTANT Bend Logic provides calculations and layout assistance for field use. Always verify all measurements, follow the NEC edition enforced by your AHJ, manufacturer instructions, jobsite standards, and safe work practices. You are responsible for confirming bend results before performing work. Bend Logic is an independent tool. Milwaukee, Klein Tools, and IDEAL are trademarks of their respective owners and are not affiliated with or endorsing this app.