Best Electrical Calculations Apps

69+ iOS apps curated and reviewed

4.7 avg rating
17 free apps
Updated August 2026

From beginner-friendly picks to power-user tools, our electrical calculations list covers 69+ iPhone apps updated through August 2026. Compare ratings, prices, and screenshots in one place.

Compare top Electrical Calculations Apps (August 2026)

#AppPriceRatingAdsIn-App PurchasesUpdated
1Electrical CalculationsElectrical CalculationsFree4.6★ (126)YesYesAug 2026
2Mike Holt's Electrical ToolboxMike Holt's Electrical ToolboxFree4.6★ (197)NoNoAug 2026
3Ohms Law Calc.Ohms Law Calc.Free4.7★ (1.3K)YesYesAug 2026
4Master Electrician Ref. LiteMaster Electrician Ref. LiteFree4.7★ (2.5K)NoNoAug 2026
5Electrical Wiring Pro 2017Electrical Wiring Pro 2017Free4.6★ (32)NoNoJul 2026
6ElectriCalc ProElectriCalc ProFree was $29.994.9★ (354)NoYesAug 2026
7Electrical calculationElectrical calculationFreeNoYesAug 2026
8Easy Lightning CalculationEasy Lightning CalculationFreeNoYesMay 2026

Top Picks for Electrical Calculations

Electrical Calculations#1

Electrical Calculations by Egal Net di Ettore Gallina

Cable sizing & capacity
Editor's Choice
📊 Productivity
4.6(126 ratings)
FreeAdsIn-App Purchases
Electrical Calculations screenshot 1
Electrical Calculations screenshot 2
Electrical Calculations screenshot 3
Electrical Calculations screenshot 4
Electrical Calculations screenshot 5
Electrical Calculations screenshot 6

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.

Mike Holt's Electrical Toolbox#2

Mike Holt's Electrical Toolbox by Mike Holt Enterprises

Electrical Power Calculator
Strong Contender
🔧 Utilities
4.6(197 ratings)
Free
Mike Holt's Electrical Toolbox screenshot 1
Mike Holt's Electrical Toolbox screenshot 2
Mike Holt's Electrical Toolbox screenshot 3
Mike Holt's Electrical Toolbox screenshot 4

This app provides essential calculations for electricians, inspectors, contractors, and engineers. It helps determine conductor sizing, circuit protection, race sizing, and grounding conductor sizes for various electrical equipment and services.

Ohms Law Calc.#3

Ohms Law Calc. by V PUGAZHENTHI

Wire Size & Voltage Drop
Worth Considering
🔧 Utilities
4.7😊(1.3K ratings)
FreeAdsIn-App Purchases
Ohms Law Calc. screenshot 1
Ohms Law Calc. screenshot 2
Ohms Law Calc. screenshot 3
Ohms Law Calc. screenshot 4
Ohms Law Calc. screenshot 5
Ohms Law Calc. screenshot 6

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.

What We Love

  • 🚀 Great value
  • 🚀 Works perfectly
  • 🚀 Fantastic app
  • 👍 Best thing since sliced bread

Room to Improve

  • 👎 Have to pay again for an app already purchased
  • 👎 Not easy to use
  • 🐛 Paid but not unlocked, no response from developer

More Electrical Calculations apps to explore

4
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
(2.5K)
paid
5
Electrical Wiring Pro 2017
Electrical Wiring Pro 2017
Electrical Wiring Pro 2017
Calcs, Refs - Electrical Pros
Free

This app provides electrical calculations and references based on the 2017 Electrical Code. It supports multiple code versions and offers features for wire sizing, box fill, conduit fill, residential load calculations, and voltage drop.

2017 Electrical Code supportAmpacity and wire sizingBox fill and wire bending space
📊 Productivity
(32)
free
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
(354)
free with in-app purchases
7
Electrical calculation
Electrical calculation
Electrical calculation
Electrical Engineering
Free
🔧 Utilities
(0)
8
Easy Lightning Calculation
Easy Lightning Calculation
Easy Lightning Calculation
Smart Lighting Calculator
Free
🔧 Utilities
(0)
9
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
10
Electrical Layout Designer
Electrical Layout Designer
Electrical Layout Designer
NEC Plans Drawings & Load Calc
$5.99
📊 Productivity
(0)
11
FE Pump Toolbox
FE Pump Toolbox
FE Pump Toolbox
by 2KG Engineering
Free
🔧 Utilities
(0)
12
Ohm's Law
Ohm's Law
Ohm's Law
by Creature Code Mobile, LLC
Free

This utility app calculates electrical resistance, voltage, and current using Ohm's Law. It provides a quick and easy way to solve electrical formulas for various applications.

Ohm's Law calculationsVoltage calculationCurrent calculation
🔧 Utilities
(165)
free with in-app purchases
13
AmpWise
AmpWise
AmpWise
Home Electrification Made Easy
Free

This app helps California contractors generate code-compliant home electrification plans quickly. It includes tools for load calculations, HVAC sizing, and appliance selection, producing professional reports for homeowners.

Main panel load calculatorHVAC sizing estimatorAppliance picker
🌟 Lifestyle
(1)
free with in-app purchases
14
CeMe
CeMe
CeMe
Carbon Emission Manage Expert
$9.99
$99.99 | 90% OFF

This app helps businesses quickly calculate greenhouse gas emissions from various sources like fuel, electricity, transportation, and waste. It simplifies complex formulas to provide fast, detailed results, aiding companies in improving energy efficiency and achieving carbon neutrality.

GHG emission calculationScope 1, 2, and 3 emissionsFuel combustion analysis
💼 Business
(2)
paid
15
NEC Electrician Prep 2026
NEC Electrician Prep 2026
NEC Electrician Prep 2026
Master Your NEC Exam Prep
Free
📚 Education
(0)
16
IEE Business
IEE Business
IEE Business
Electrical toolbox & reference
Free
🔧 Utilities
(0)
17
SparkyPal - AI Electrician App
SparkyPal - AI Electrician App
SparkyPal - AI Electrician App
Smart AI Tool for Electricians
Free
📊 Productivity
(0)
18
Hercules Motores
Hercules Motores
Hercules Motores
by Smart Cards desenvolvimento de aplicativos e cartoes postais LTDA ME
Free
💼 Business
(0)
19
Electrical Calculation Tools
Electrical Calculation Tools
Electrical Calculation Tools
Handy tool for Electrician
$1.99
🔧 Utilities
(0)
20
Unit Converter - Simple
Unit Converter - Simple
Unit Converter - Simple
Smart calculations
Free
🔧 Utilities
(0)

FAQ about Electrical Calculations

What are the best electrical calculations apps for iPhone?
Electrical Calculations tops our electrical calculations apps ranking as of August 2026, with a 4.6-star average from 126 App Store ratings, and it's free to download.
Yes — 17 of the top electrical calculations apps we rank are free to download, including Electrical Calculations and Mike Holt's Electrical Toolbox.
Electrical Calculations shows ads and offers in-app purchases, according to its App Store listing as of August 2026.
We track 69+ electrical calculations apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.
The app offers a wide range of calculations for electrical systems, including wire sizing, voltage drop, current carrying capacity, power calculations, circuit breaker sizing, and short circuit current. It also includes electronic calculations for resistors, fuses, and circuit dividers, as well as motor-related calculations and numerous unit conversions.
The application supports several key international electrical standards, including those from the International Electrotechnical Commission (IEC), the Comitato Elettrotecnico Italiano (CEI), the National Electrical Code (NEC), and the Canadian Electrical Code (CEC).