Conduit Fill & Bending Calc

Conduit Fill & Bending Calc

Box Fill, EMT Bend, Ampacity

4 ratings
4 reviews
Free
In-App Purchases

Details

  • Released
  • Updated
  • May 15, 2026
  • August 21, 2026

Features

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About

This professional calculator helps licensed electricians perform complex NEC code calculations for conduit fill, voltage drop, wire sizing, and more. It offers multiple NEC code years and provides inspector-ready PDF exports with project management features. Designed for offline use in the field.

βœ“16 NEC calculators
βœ“NEC year-aware (2017-2026)
βœ“Inspector citations on results
βœ“Live cross-section visualization
βœ“Inspector-ready PDF exports
βœ“Offline functionality
βœ“Project management
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What's New in Conduit Fill & Bending Calc

1.8

August 21, 2026

The biggest update yet - built from what electricians asked for. BENDING - Offsets and box offsets now show every standard angle side by side, with marks apart and shrink for each. Pick by the room you have, tap to use. Angles that will not fit are flagged before you bend. - The site protractor is now one tap from the bend picker. Point your phone at a bend and read the angle. NEC REFERENCE - 26 lookup tables, up from 21: conductor resistance, dwelling services, range and multifamily demand, and more. - The library now follows YOUR adopted code year. Pick 2017, 2020, 2023, or 2026 and citations, tables, and articles match the book on your truck. - Browse by chapter, search inside any table, and pin the tables you use daily. - Every value is generated by the same engines that power the calculators, and this release re-verified them line by line against the printed NEC. EXAM PREP - New exam mode: timed practice exams, a readiness score, and a study path built from your weakest topics. Set your exam date and watch the countdown. DAILY QUIZ - Your streak now follows your work week. Weekends and holidays never break it, and practicing on them counts as bonus days. - Earn badges at 7, 30, and 100 days and share them with the crew. - A morning NEC tip arrives at 6:45, before you roll. SHARE AND SAVE - Every calculator can now send a clean results card. Text a fill check or bend layout to the crew in two taps. - Saving a calc to a job now takes two taps, no setup.

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Subscription plans

Conduit Fill Pro Yearly

Unlock all 16 NEC calculators for 1 year

$9.991 Year
7 Days trial
How to cancel Conduit Fill & Bending Calc subscription ⁉️
1

In-App Purchases

$19.99

Conduit Fill Pro Lifetime

Unlock all 16 NEC calculators forever

User reviews

Missing chapters of NEC

Why are all of the chapters of the NEC not available if the app is being paid for. Should we have access to everything in the app or is there an update coming to open those chapters?

Response from developer

Great suggestion - more tables are on the way. Chapter 9 Tables 8 and 9, dwelling services and the 220 demand factors land in the next update, bringing it to 26. Every value comes from the same data the calculators run on, so what you look up always matches what the app gives you, and it all works with no service. Anything you're always digging for, tell us and we'll get it in. Thanks!

Awesome!

I was waiting for an app to calculate like this.
It’s so Helpful!

Quick and handy

Great easy handy tool. It quickly handles fill calculations and is useful for both beginners and experienced professionals.

Really useful in the field

Really handy app. It’s simple to use, saves time on conduit fill and wire sizing, and the NEC references are a nice touch. Definitely useful to have in the field.

Developer apps

FAQ

Does Conduit Fill have ads?

No, Conduit Fill is ad-free. The app focuses on providing a clean and uninterrupted experience for professionals.

What NEC code years does Conduit Fill support?

Conduit Fill supports multiple NEC code years, including 2017, 2020, 2023, and 2026. You can switch between them with a single tap.

Can I use Conduit Fill offline?

Yes, Conduit Fill is built for offline use. All NEC tables are stored on the device, allowing you to perform calculations in areas with no internet connection.

What pricing options are available for Conduit Fill?

Conduit Fill offers a 7-day free trial for its yearly subscription at $19.99. Alternatively, you can purchase Lifetime access for $29.99 or a monthly subscription for $4.99.

How does Conduit Fill handle project management?

You can group calculations under specific jobs, attach photos of panels and splices, and export entire project bundles. This helps keep your work organized and ready for review.

What kind of data does Conduit Fill collect?

Conduit Fill prioritizes user privacy by collecting no data. There are no accounts, sign-ins, tracking, or analytics; your projects and calculations remain solely on your device.

Is Conduit Fill suitable for field use with gloves?

Yes, Conduit Fill features a Field Mode with glove-friendly buttons, haptic confirmations, and larger tap targets, making it practical for use on job sites.

What is the update frequency for Conduit Fill?

The app was last updated on July 4, 2026, indicating active development and support. Users can expect ongoing improvements and NEC code updates.