Box Fill NEC 314 Calculator Android

Box Fill NEC 314 Calculator

By: ZkDev
NEC box fill calculator. Junction box volume per Article 314.16. Offline.

Features & Capabilities

NEC box fill calculator for electricians, apprentices, and electrical engineers. Your go-to junction box calculator for outlet box fill and device box volume calculations per NEC 314. Calculate box fill volumes instantly using official NEC 2023 Article 314.16 data (Tables 314.16(A) and 314.16(B)) with support for all standard metal box types. No internet required - works 100% offline on the job site.

Whether you're verifying outlet box fill for a device box, calculating junction box volumes, or checking if your conductor fill exceeds NEC limits, this electrical box calculator gives you accurate results in seconds. Use it as your portable box fill chart reference for residential and commercial installations.

FEATURES:
• All standard metal box types: Device, Round/Octagonal, Square 4", Square 4-11/16", Masonry, FS, FD
• Custom volume entry for non-standard boxes
• Conductor sizes: 18 AWG to 6 AWG per Table 314.16(B)
• Internal cable clamps, fixture studs, and hickeys
• Multi-gang device fill calculation
• Equipment grounding conductors (EGC) with NEC 2023 rules
• Isolated grounding conductors - separate allowance
• Visual PASS/FAIL indicator with fill percentage
• Shows minimum box volume needed when over-filled
• Suggests a standard box that will pass

PRO FEATURES (one-time purchase):
• No ads
• Save calculation history
• Export calculations as PDF reports
• Dark theme support

BUILT FOR THE JOB SITE:
This app is designed by electricians, for electricians. The interface is clean, fast, and works with one hand. Add conductors, check your fill, and move on - no complicated menus or unnecessary features.

ACCURATE NEC DATA:
All box volumes are sourced from NEC 2023 Table 314.16(A). Conductor volume allowances follow Table 314.16(B) exactly. Fill rules follow Article 314.16 for conductors, clamps, support fittings, devices, and grounding conductors. Always verify calculations against the official NEC code book before installation.

NEC 314.16 FILL RULES:
• Each conductor: volume from Table 314.16(B) based on AWG size
• Internal clamps: 1× largest conductor volume (all clamps combined)
• Support fittings: 1× largest conductor per fitting type
• Devices: 2× largest conductor per gang
• EGC (≤4): 1× largest EGC volume
• EGC (>4, NEC 2023): additional allowance per conductor
• Isolated grounds: counted separately

PERFECT FOR:
• Licensed electricians doing box fill calculations daily
• Electrical apprentices studying for journeyman exams
• Electrical engineers and designers
• Electrical contractors bidding residential and commercial jobs
• NEC code exam preparation (Journeyman & Master)
• Anyone who needs a fast, accurate junction box calculator

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

Simplify your box fill calculations on the job site.

User Growth & Download Statistics

App
By:
ZkDev
Downloads:
236 15
Version:
1.0.7 Last updated: 2026-04-29
Version code:
27
Creation date:
2026-03-03
Publisher country:
KG KG
Permissions:
  • com.google.android.gms.permission.AD_ID Moderate risk
  • android.permission.ACCESS_ADSERVICES_AD_ID Low risk
  • android.permission.ACCESS_ADSERVICES_ATTRIBUTION Low risk
  • android.permission.ACCESS_ADSERVICES_TOPICS Low risk
  • android.permission.FOREGROUND_SERVICE Low risk
  • android.permission.INTERNET Low risk
  • android.permission.WAKE_LOCK Low risk
  • com.android.vending.BILLING Low risk
  • com.google.android.finsky.permission.BIND_GET_INSTALL_REFERRER_SERVICE Low risk
  • android.permission.ACCESS_NETWORK_STATE Safe
  • See more
Size:
24.34MB
Email:
su*****@tradetools.dev
URLs:
Website ,Privacy policy
Full description:
See detailed description
Source:
Google Play Store
Data ingested on:
2026-06-09
Compare stats and ranking:

Contact the developer

Chrome-Stats does not own this Android app. Please use these information below to contact the Android app developer.
Developed by:
ZkDev
Google Play Store
https://play.google.com/store/apps/details?id=com.electools.box_fill_calculator
Email:
su*****@tradetools.dev
Website:
https://tradetools.dev/electrical/

Publisher Change History

2026-05-11: su*****@zkdev.ru to su*****@tradetools.dev

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