Best apps like NEC Box & Conduit Calc

9+ similar apps compared and reviewed

4.5 avg rating
8 free apps
Updated September 2026

NEC Box & Conduit Calc is great, but it's not the only option. Explore 9+ similar apps for iPhone and iPad, each reviewed and rated by real users. Find free alternatives, premium upgrades, and hidden gems.

Top Alternatives to NEC Box & Conduit Calc

Box Fill 2#1

Box Fill 2 by Snappy Appz Inc.

Editor's Choice
🔧 Utilities
3.3(3 ratings)
$3.99
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This utility app helps electricians and contractors perform precise electrical box fill calculations according to the latest codes. It also includes a comprehensive construction calculator for dimensional math, area, volume, and right-angle solutions.

Conduit Fill Pro#2

Conduit Fill Pro by Mikhail Nikitin

Capacity Calculator & Code
Strong Contender
🔧 Utilities
3.7(3 ratings)
FreeIn-App Purchases
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This app provides professional electricians with a suite of tools for electrical calculations, including conduit fill, junction box fill, and voltage drop. It offers detailed breakdowns, code references, and offline functionality for job site reliability. Generate PDF reports for documentation and inspections.

ConduitLab: NEC Calculator#3

ConduitLab: NEC Calculator by Teleios AI, LLC

NEC Voltage Drop & Fill Calc
Worth Considering
🔧 Utilities
5.0(3 ratings)
FreeIn-App Purchases
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This app provides professional NEC electrical calculations for electricians and engineers. It features ampacity, voltage drop, and conduit fill calculations, with a unique 2D visualizer to see conductor layouts. Generate inspector-ready PDF reports for documentation and record-keeping.

More apps like NEC Box & Conduit Calc

4
National Electricians Calc
National Electricians Calc
National Electricians Calc
#1 Electrical Calculator
Free

This app provides electricians with fast, reliable electrical calculations for the jobsite. It offers practical tools for conduit fill, ampacity, voltage drop, and more, ensuring consistent results quickly. Designed for professionals who need dependable tools without unnecessary features.

Conduit fill calculationsAmpacity calculationsVoltage drop calculations
🔧 Utilities
(1)
freemium
5
FILL ◦ Conduit Fill Calculator
FILL ◦ Conduit Fill Calculator
FILL ◦ Conduit Fill Calculator
NEC 2026 & 2023 Wire Sizing
Free

This app calculates conduit fill percentages based on NEC 2023 standards. It helps electricians determine if wires will fit in a conduit or find the smallest suitable conduit for a given set of wires. Features include real-time status updates, history, and export options.

NEC 2023 compliant calculationsForward and reverse calculation modesReal-time fill percentage status
🔧 Utilities
(3)
free with in-app purchases
6
AWG Calculator: Wire Size
AWG Calculator: Wire Size
AWG Calculator: Wire Size
NEC, Conduit, Voltage Drop
Free

This professional tool provides electricians with accurate, code-based electrical calculations for wire sizing, voltage drop, circuit breakers, and more. It includes NEC® code references and specialized calculations for various systems. Save time and ensure accuracy in the field or during planning.

Wire size (AWG) calculationsVoltage drop calculationCircuit breaker sizing
🔧 Utilities
(69)
free with in-app purchases
7
ElectriCalc Pro
ElectriCalc Pro
ElectriCalc Pro
Electrician NEC Calculator
Free
$29.99 | 100% OFF

This app provides electricians and electrical professionals with a powerful tool for performing complex calculations based on the latest National Electrical Code (NEC). It offers solutions for wire sizing, voltage drop, conduit sizing, and motor calculations, saving time and ensuring code compliance.

NEC compliant calculationsWire and conduit sizingVoltage drop calculations
🔧 Utilities
(354)
free with in-app purchases
8
FieldVolt Electrical
FieldVolt Electrical
FieldVolt Electrical
Electrical Field Calculator
Free

This app assists electricians with complex calculations for pipe bending, conduit fill, ampacity, voltage drop, and box fill. It also offers a professional subscription for expert electrical advice and troubleshooting.

Pipe bending calculations (offsets, saddles)Conduit fill calculations (NEC Table 1)Ampacity and wire sizing
🔧 Utilities
(1)
freemium
9
Building Wire Selector
Building Wire Selector
Building Wire Selector
Southwire Calculator
Free

This tool helps determine the correct conductor size and wire type for electrical installations. It adheres to the National Electrical Code® wiring methods, ensuring compliance and safety.

Conductor size determinationWire and cable type selectionNational Electrical Code compliance
🔧 Utilities
(2)
free