Conduit Fill NEC Chapter 9

1.2.1

ZkDev

3.40

9 reviews

100+
Downloads

Free

NEC conduit fill calculator. 13 raceways, 15 wire types, nipple mode. Offline

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3.40 · 9 reviews · 100+ downloads

About Conduit Fill NEC Chapter 9

Conduit Fill NEC Chapter 9 is a tools app developed by ZkDev.

How many times has Conduit Fill NEC Chapter 9 been downloaded?

Conduit Fill NEC Chapter 9 has been downloaded 210 times. In the last 30 days, the app was downloaded 52 times.

What is the rating of Conduit Fill NEC Chapter 9?

Conduit Fill NEC Chapter 9 is rated 3.40 out of 5 stars, based on 9 ratings.

Is Conduit Fill NEC Chapter 9 free?

Conduit Fill NEC Chapter 9 is free to download. The APK download size is 20.74 MB. The latest version available is 1.2.1. The last update was on July 23, 2026.

What are the requirements for Conduit Fill NEC Chapter 9?

The app has a content rating of Everyone. The app has been available on Google Play April 2026.

Description

NEC conduit fill calculator for electricians, apprentices, and electrical engineers. Calculate conduit fill percentages instantly using official NEC Chapter 9 data - Tables 1, 4, and 5. This electrical raceway calculator supports all conduit types and wire sizes. Works 100% offline on the job site.

Whether you're pulling THHN through EMT, running FMC to a motor, or sizing PVC for a big commercial run, this conduit fill calculator gives you accurate NEC-compliant results in seconds. Use it as your portable conduit fill chart and raceway fill reference, faster than looking up wire count tables manually - perfect for residential and commercial installations.

CONDUIT FILL CALCULATOR FEATURES:
• 13 conduit types: EMT, ENT, FMC, IMC, LFNC-A, LFNC-B, LFMC, RMC, PVC Schedule 40, PVC Schedule 80, PVC Type A, PVC Type EB, HDPE
• Trade sizes from 3/8" through 6"
• 15 wire insulation types: building wire (THHN/THWN-2, XHHW-2, THW, RHH/RHW-2, USE-2, TW), fixture wire (TFFN/TFN, PF, PGF, PAF, PTF, ZF, SF-1, SF-2, RFH-2, FFH-2, KF-1) and high-temperature FEP, FEPB, PFA, PFAH, TFE
• Wire sizes: 18 AWG to 1000 MCM (16/18 AWG for fixture wire)
• AWG and mm² (metric) wire display
• NEC Table 1 fill rules: 53% (1 wire), 31% (2 wires), 40% (3+ wires)
• Visual PASS/FAIL indicator with fill percentage
• Shows how many more wires you can add
• Auto-suggests the smallest conduit size that fits your wires - even when the current size already passes
• Nipple mode: conduit nipples up to 24 in use the NEC 60% fill allowance (Chapter 9, Note 4)
• Mix different wire sizes in the same conduit fill calculation

PRO FEATURES (one-time purchase):
• No ads - clean interface for professionals
• Save conduit fill calculation history
• Export calculations as PDF reports for permits and records
• Dark theme support

BUILT FOR ELECTRICIANS ON THE JOB SITE:
This conduit fill calculator is designed by electricians, for electricians. The interface is clean, fast, and works with one hand. Add wires, see your fill percentage, and move on - no complicated menus or unnecessary features.

ACCURATE NEC CONDUIT FILL DATA:
All conduit and wire areas are sourced from the NEC Chapter 9. Conduit fill percentages follow NEC Table 1 rules exactly:
• 1 wire: 53% maximum fill
• 2 wires: 31% maximum fill
• 3 or more wires: 40% maximum fill

NEC TABLES INCLUDED:
• NEC Chapter 9, Table 1 - Percent fill for conduit and tubing
• NEC Chapter 9, Table 4 - Conduit dimensions and areas (EMT, ENT, FMC, IMC, LFNC, LFMC, RMC, PVC, HDPE)
• NEC Chapter 9, Table 5 - Wire dimensions and areas (THHN, XHHW, THW, RHW, USE, TW, TFFN, PF, ZF, SF, RFH, KF, FEP, PFA, TFE)

PERFECT FOR:
• Licensed electricians doing conduit fill calculations daily
• Electrical apprentices studying for journeyman exams
• Electrical engineers and designers
• Electrical contractors bidding commercial and residential jobs
• NEC code exam preparation
• Anyone who needs a fast, accurate conduit fill calculator
• Conduit sizing and wire count on the job site

OFFLINE & PRIVACY:
• Works 100% offline - no internet needed on the job site
• No account required
• No data collection - your calculations stay on your device

Simplify your conduit fill calculations on the job site.

Recent changes:
• Cross-promotion: discover our other NEC calculator apps
• In-app review for easier rating
• Firebase Analytics for better app experience
• Dynamic version display in settings
• Bug fixes and performance improvements

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More data about Conduit Fill NEC Chapter 9

Price	Free to download
Total downloads	210
Recent downloads	52
Rating	3.40 based on 9 ratings
Ranking	Not ranked
Version	1.2.1
APK size	20.7 MB
Number of libraries	?
Suitable for	Everyone
Ads	Contains ads

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Conduit Fill NEC Chapter 9 has been downloaded 210 times. Over the past 30 days, it has been downloaded 52 times.

Changelog of Conduit Fill NEC Chapter 9

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Comments on Conduit Fill NEC Chapter 9 for Android

★☆☆☆☆ Darren Carner · Jun 9, 2026

It only has a few types of conduit. It's useless!! I reinstalled it with the latest version, and it still shows the same conduit types your response is incorrect

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Technologies used by Conduit Fill NEC Chapter 9

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