Best The Voltage Drop Calc Apps

203+ iOS apps curated and reviewed

4.6 avg rating
16 free apps
Updated June 2026

Finding the right the voltage drop calc app can be overwhelming with so many options. We've analyzed 203+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Top Picks for The Voltage Drop Calc

Southwire® Voltage Drop Calc#1

Southwire® Voltage Drop Calc by Southwire Company

Southwire Calculator
Editor's Choice
🔧 Utilities
4.6😐(1.5K ratings)
Free
Southwire® Voltage Drop Calc screenshot 1
Southwire® Voltage Drop Calc screenshot 2
Southwire® Voltage Drop Calc screenshot 3
Southwire® Voltage Drop Calc screenshot 4
Southwire® Voltage Drop Calc screenshot 5
Southwire® Voltage Drop Calc screenshot 6

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.

What We Love

  • 🚀 Quick and useful
  • 🚀 Great Quick Reference
  • 👍 A must have app for electricians
  • 👍 Love These

Room to Improve

  • 🐛 Motor starting Voltage drop
  • 🐛 Useless!
  • 🐛 Won't work
Prysmian Group Voltage Drop#3

Prysmian Group Voltage Drop by Prysmian Group

Worth Considering
📊 Productivity
5.0(6 ratings)
Free
Prysmian Group Voltage Drop screenshot 1
Prysmian Group Voltage Drop screenshot 2
Prysmian Group Voltage Drop screenshot 3
Prysmian Group Voltage Drop screenshot 4
Prysmian Group Voltage Drop screenshot 5

Calculate maximum circuit distance and minimum conductor size for required voltage drop. Designed for electrical professionals, it provides detailed information on conductor size, voltage loss, and amperage based on NEC standards.

More The Voltage Drop Calc apps to explore

4
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
5
PCalc Lite
PCalc Lite
PCalc Lite
The Best Calculator
Free

This free scientific calculator offers essential features like RPN mode, unit conversions, and multiple undo/redo. It provides a taste of a more powerful version, with optional in-app purchases for expanded functionality.

Optional RPN modeMultiple undo and redoUnit conversions and constants
🔧 Utilities
(213)
free with in-app purchases
6
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
(256)
free with in-app purchases
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 Calculator Plus
Electrical Calculator Plus
Electrical Calculator Plus
by Inch Calculator
Free

This app offers a comprehensive suite of 26 electrical and electronics calculators and converters. It helps users compute various electrical properties, including Ohm's Law, current, power, voltage, and resistance. It also features tools for wire ampacity, voltage drop, and LED resistor calculations.

26 electrical calculatorsOhm's Law calculatorCurrent and power calculators (DC/AC)
🔧 Utilities
(15)
ad-supported
9
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Ohm & Watt Law Electrical Calc
Volt,Current,Power,Resistance
Free

This utility app quickly calculates voltage, current, resistance, and power using Ohm's and Watt's laws. It's designed for electricians, engineers, and students, offering instant, accurate results with a simple interface. Works offline and is ideal for field calculations or exam preparation.

Calculate Voltage, Current, Resistance, PowerSupports Ohm's Law & Watt's LawBeginner-friendly interface
🔧 Utilities
(49)
free with in-app purchases
10
FieldCalc - Voltage Drop Lite
FieldCalc - Voltage Drop Lite
FieldCalc - Voltage Drop Lite
Electrician Voltage Calculator
Free
🔧 Utilities
(0)
11
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
12
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
13
Electrician's Helper
Electrician's Helper
Electrician's Helper
by Sam Virgillo
$12.99

This app simplifies electrical work by providing quick access to electrical codes and performing complex calculations for installations. It helps electricians find conductor ampacity, calculate voltage drop, determine box fill, and size raceways, among many other essential functions.

3 phase delta and wye circuit calculationsConductor ampacity lookup (NEC/CEC)Voltage drop calculation
📊 Productivity
(13)
paid
14
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
15
Ohm's Law Calculator
Ohm's Law Calculator
Ohm's Law Calculator
Power, Volts, Amps, Ohm : Calc
Free

Easily calculate electrical values like voltage, current, resistance, and power. Input any two known values, and the app will automatically compute the rest. Supports various units for precise calculations.

Calculate Voltage, Current, Resistance, PowerAutomatic calculation of remaining valuesSupports multiple units (kV, V, mV, A, mA, Ω, kΩ, MΩ, W, kW, MW, hp, BTU/hr)
🔧 Utilities
(2)
free with in-app purchases
16
Electrical Calculator
Electrical Calculator
Electrical Calculator
Electrical Tools & Formulas
$3.99

This app provides over 65 essential electrical calculation tools and formulas for engineers, students, and professionals. It supports both USCS and SI units and includes features like resistor color code conversion and upgraded voltage drop calculations aligned with industry standards.

Over 65 electrical calculation toolsResistor color code calculatorsUpgraded voltage drop calculations
🔧 Utilities
(462)
free
17
Electrician Handy Tool
Electrician Handy Tool
Electrician Handy Tool
All in one electricians tools
Free

This app provides electricians with essential tools for conduit bending, calculations, and quick reference. It simplifies electrical work with features like voltage drop calculation and a user-friendly fraction calculator.

Voltage drop calculatorConduit bending calculatorFraction calculator
📊 Productivity
(21)
free with in-app purchases
18
Calc
Calc
Calc
by Mike Wesemann
Free

A visually appealing and straightforward calculator app for iPhone and iPad. It offers a unique user interface with support for basic and scientific calculations, various number base conversions, and currency and unit conversions.

Universal app for iPhone and iPadBasic and scientific calculationsNumber base conversions (decimal, hex, binary, octal)
🔧 Utilities
(28)
free
19
ElectriCalc: NEC Calculator
ElectriCalc: NEC Calculator
ElectriCalc: NEC Calculator
Wire Size, Voltage Drop, AWG
Free
🔧 Utilities
(2)
20
LED Resistor Calculator Plus
LED Resistor Calculator Plus
LED Resistor Calculator Plus
Resistor Values for LED
$2.99

Calculate the correct series resistor needed to safely power light-emitting diodes. Input supply voltage, LED voltage drop, current, and the number of LEDs to find the required resistor value and wattage.

Calculate series resistor valueDetermine resistor power dissipationRecommend resistor wattage
🔧 Utilities
(6)
paid