Bendwright Electric Calculator

For electricians bending conduit on the job: Bendwright works like a handheld, offline, on the phone you already carry. Offsets and saddles come out right first time, without buying an $80+ handheld.

Built for electricians, apprentices, contractors and inspectors, it also covers voltage drop, wire sizing, fill and motor current. It works like a hardware calculator: a safety-yellow chassis, real keys and a clear LCD, with each answer labelled so you know what you are reading. Enter lengths in feet, inches and fractions or in metric.

CONDUIT BENDING
• Offsets at 10, 22.5, 30, 45, 60 or any angle: distance between bends, shrink, multiplier and kick run
• Three-bend saddle: shrink and outer marks for the obstacle depth
• Stub-up mark from the bender take-up for the conduit size
• EMT, IMC, RMC, PVC 40 and PVC 80

VOLTAGE DROP
• Single and three phase, copper or aluminum
• Drop in volts and percent, end voltage and the longest run for your target
• Smallest conductor that keeps the drop within 3 percent or any target you set

CONDUCTORS
• Smallest wire size whose ampacity covers the load, AWG and kcmil
• 60, 75 and 90 °C columns, ambient temperature correction and bundling adjustment
• Copper or aluminum

FILL
• Conduit fill percent against the 53, 31 and 40 percent limits
• Most conductors that fit a conduit
• Box volume from conductor allowances

OHM'S LAW AND MOTORS
• Volts, amps, ohms and watts: enter any two
• Power factor, kVA and three-phase power
• Motor full-load current from the NEC tables, and calculated current from horsepower, efficiency and power factor

NEC OR IEC
• NEC mode with tables from NFPA 70, 2023 edition
• IEC mode: mm² sizes, metres and mV/A/m voltage drop

WORKS THE WAY YOU DO
• A results strip shows every solved value at once
• 10 memories, a tape of your calculations, reference tables and a key guide
• Large keys you can hit with gloves on
• Export a job strip: the tape with inputs, stamped and ready to attach to a lift plan, sign-off or take-off, as text or PDF

TRY PRO FREE FOR 7 DAYS
Try every feature free for 7 days, then keep Pro with a yearly subscription. Cancel anytime in Google Play. No ads, works offline.

PRIVATE BY DESIGN
Works offline, no account, no data collected. Everything stays on your device.

How it's calculated: the formulas and tables behind every result, at https://wrightcalc.app/bendwright/

Questions or feedback: [email protected]

NEC and NFPA 70 are registered trademarks of the National Fire Protection Association; this app is not affiliated with or endorsed by NFPA. Results are computed from the formulas and tables shown and are provided for reference only. Always verify against the code in force and the authority having jurisdiction, and check local tables in IEC mode. The developer accepts no liability for loss or damage arising from use.