Best Lead Wire Ampacity Apps

210+ iOS apps curated and reviewed

4.7 avg rating
18 free apps
Updated June 2026

Out of 210+ lead wire ampacity apps on iOS, 18 are free and the rest sit in the paid tier. This page sorts them so you can compare both sides before you commit.

Top Picks for Lead Wire Ampacity

Prysmian Group Conductor Amps#2

Prysmian Group Conductor Amps by Prysmian Group

Electrical Conductor Ampacity
Strong Contender
📊 Productivity
5.0(3 ratings)
Free
Prysmian Group Conductor Amps screenshot 1
Prysmian Group Conductor Amps screenshot 2
Prysmian Group Conductor Amps screenshot 3
Prysmian Group Conductor Amps screenshot 4
Prysmian Group Conductor Amps screenshot 5

This tool helps electrical professionals quickly determine conductor ampacities based on various temperature ratings and electrical codes. It supports different conductor types, materials, and ambient temperature adjustments for accurate calculations.

AWG Calculator: Wire Size#3

AWG Calculator: Wire Size by Melchisedec Martinez Rodriguez

Electrician Wire Tool
Worth Considering
🔧 Utilities
4.6(67 ratings)
FreeIn-App Purchases
AWG Calculator: Wire Size screenshot 1
AWG Calculator: Wire Size screenshot 2
AWG Calculator: Wire Size screenshot 3
AWG Calculator: Wire Size screenshot 4
AWG Calculator: Wire Size screenshot 5

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.

More Lead Wire Ampacity apps to explore

4
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire® Voltage Drop Calc
Southwire Calculator
Free

Calculate the appropriate wire size for electrical circuits. This tool helps determine wire size based on voltage drop and current carrying capacity, ensuring compliance with NEC ampacity limits.

Determine wire size for voltage dropCalculate voltage drop for conductor runsLimit wire size by voltage drop
🔧 Utilities
(1.5K)
free
5
Master Electrician Ref. Lite
Master Electrician Ref. Lite
Master Electrician Ref. Lite
A handbook for electricians
Free

This electronic pocket reference guide provides essential information for electrical professionals. It offers calculations, code tables, and detailed sections on motors, ampacities, grounding, and more, all accessible on your mobile device.

Motor and wiring informationAmpacity tablesConduit fill and grounding sizes
📊 Productivity
(2.4K)
paid
6
Wire Gauge & Size Calculator
Wire Gauge & Size Calculator
Wire Gauge & Size Calculator
Min Wire Gauge for Vdrop %
Free

This utility app calculates the minimum wire size needed for electrical installations based on voltage, current, distance, and allowable voltage drop. It supports various units and wire materials, ensuring safe and efficient power distribution for diverse applications.

Calculates minimum wire gaugeSupports voltage drop percentageMultiple wire size units (AWG, mm, mm², inches)
🔧 Utilities
(9)
ad-supported
7
Ugly's Electrical References
Ugly's Electrical References
Ugly's Electrical References
by Informed Publishing
$12.99

This app provides electricians and electrical professionals with up-to-date digital information based on the National Electrical Code. It includes formulas, wiring diagrams, conduit bending guides, and calculators for various electrical calculations. The app is designed for on-the-job reference and works offline.

NEC 2026 updatesMathematical formulas and calculatorsConduit bending guide with videos
📊 Productivity
(1.5K)
paid
8
Electrical Calculations
Electrical Calculations
Electrical Calculations
by Egal Net di Ettore Gallina
Free

This app provides a comprehensive suite of electrical calculations for professionals. It supports various international standards and offers detailed reports in PDF format. The tool covers wiring, power, motor, and electronic calculations, along with extensive conversion tables and resources.

Wire size and voltage drop calculationsPower, current, and resistance calculationsMotor performance and connection diagrams
📊 Productivity
(125)
free with in-app purchases
9
HVACR Check & Charge
HVACR Check & Charge
HVACR Check & Charge
PT Charts Superheat Subcooling
Free

This app provides an instant mobile refrigerant charge calculator for HVACR applications. It supports various refrigerants and allows users to calculate the correct system charge based on superheat, subcooling, or airflow, along with environmental conditions.

Instant refrigerant charge calculatorSuperheat calculator (non-TXV)Subcooling calculator (TXV)
🔍 Reference
(17K)
free
10
DC Wire Sizer
DC Wire Sizer
DC Wire Sizer
Easy Wire Sizing Calculator!
$2.99

Calculate appropriate DC wire sizes for electrical projects, preventing equipment damage and fires. Save, edit, and export wire run details for electrical plans and material purchases. Features a wizard for easy sizing for all users.

Calculates wire size, voltage drop, and ampacitySupports custom DC voltages up to 500 ampsSave, edit, and export wire run details
🔧 Utilities
(21)
paid
11
Wire Color Code
Wire Color Code
Wire Color Code
Electrical circuit colors
Free

This app helps electricians and DIYers identify electrical wire colors globally. It offers country-specific codes, a large circuit database, and quick search functionality. Customize colors for your projects and enjoy a user-friendly interface for efficient electrical panel wiring.

Global country-specific wire color codesExtensive circuit database (up to 1000 circuits)Quick search for phase colors
📊 Productivity
(654)
free with in-app purchases
12
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
Southwire® Conduit Fill Calc
by Southwire Company
Free

This tool assists electricians, engineers, and contractors in determining the correct conduit size based on NEC guidelines. It calculates conduit fill percentages and jam probability, saving time compared to manual calculations.

Conduit size calculationNEC fill percentagesJam probability
🔧 Utilities
(746)
free
13
Ohms Law Calc.
Ohms Law Calc.
Ohms Law Calc.
Wire Size & Voltage Drop
Free

This app provides a comprehensive suite of electrical calculations, including Ohm's Law, voltage drop, wire sizing, and impedance. It also offers numerous converters for various electrical units and parameters, aiding in circuit design and analysis.

Ohm's Law calculationsVoltage drop calculatorWire size calculator
🔧 Utilities
(1.3K)
free with in-app purchases
14
NG Wire
NG Wire
NG Wire
NG Orange LLC
Free

This app provides electrical construction professionals with quick access to National Electric Code® (NEC®) tables and calculations for wire, conduit, and motor data. It streamlines complex calculations for efficient and accurate results in the field or office.

NEC® table lookupGeneral conduit fill calculationsDetailed conduit fill calculations
📊 Productivity
(5)
subscription
15
Cerrowire Calculators
Cerrowire Calculators
Cerrowire Calculators
by Cerro Wire LLC
Free

Calculate conduit fill and size based on NEC guidelines for copper and aluminum building wire. Determine the maximum number of conductors for a given raceway or the required raceway size for specific conductors.

NEC conduit fill calculationsConduit sizing for conductorsSupports copper and aluminum wire
🔧 Utilities
(5)
free
16
E-Wire Calc
E-Wire Calc
E-Wire Calc
by ELEKTRISOLA
Free
🔧 Utilities
(1)
17
Conversion Calculator !
Conversion Calculator !
Conversion Calculator !
Currency, Temperature, Length
Free

Easily convert between various units of measurement, including currencies, temperature, length, and weight. This intuitive tool provides real-time currency exchange rates and a comprehensive list of conversions for everyday use.

Real-time currency conversionsExtensive unit categories (weight, temp, length, volume, etc.)Simple and intuitive interface
✈️ Travel
(13K)
free with in-app purchases
18
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
19
Electrician's Sidekick
Electrician's Sidekick
Electrician's Sidekick
by IDEAL INDUSTRIES, INC
Free

This free tool consolidates essential electrical calculations and reference guides into a single app. It offers precise tools for conduit bending, wire sizing, voltage drop, and conduit fill, designed to enhance fieldwork efficiency and accuracy for professionals. The app functions offline, ensuring constant access to critical information.

Conduit bending calculatorWire sizing and voltage drop calculatorConduit fill calculator
📊 Productivity
(16)
free
20
Voltage Drop Calculator.
Voltage Drop Calculator.
Voltage Drop Calculator.
Wire Size, NEC & IEC Tools
Free

Calculate voltage drop and wire size using both NEC and IEC standards. Supports various load types, conductor materials, and system configurations. Generates detailed reports for electricians, engineers, and contractors.

NEC and IEC dual standardsVoltage drop and wire sizing calculationsSupport for continuous load and corrections
🔧 Utilities
(411)
free with in-app purchases