Comparison

Electrical Calculator lite vs Mike Holt's Electrical Toolbox

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Electrical Calculator lite

This comprehensive tool offers over 60 calculators and 16 converters for electrical engineering, wiring, and circuit analysis. It supports engineers, electricians, students, and hobbyists with calculations ranging from basic Ohm's Law to complex RLC circuits and power conversions.

Highlights
  • 60+ Electrical Calculators
  • 16 Electrical Unit Converters
  • Ohm's Law Calculations
  • RLC Circuit Analysis
  • Power and Current Calculations
  • Transformer Calculations
  • Wire Size Selector
Features
Read full description

Trusted by over 15,000 users worldwide, the Electrical Calculator App is your all-in-one solution for electrical engineering, wiring, and circuit analysis. Designed for engineers, electricians, students, and hobbyists, this app offers a wide range of calculators to handle everything from basic Ohm’s Law to complex impedance and RLC circuits. Available Calculations: Basic Electrical Calculators: • Resistor Color Code (Ω) • Voltage Calculator (Ω) • Current Calculator (Ω) • Resistance Calculator (Ω) • Power Calculator (Ω) • Voltage Drop Calculations • Wire Size Selector Impedance Calculations (R-L-C): • Impedance Calculators R-L-C • R and L in Series • R and L in Parallel • R and C in Series • R and C in Parallel • L and C in Series • L and C in Parallel • R, L and C in Series • R, L and C in Parallel Power and Current Calculators: • Single Phase Power • Three Phase Power • Single Phase Current • Three Phase Current • kVA to Amps (Single Phase) • kVA to Amps (Three Phase) • Amps to kVA (Single Phase) • Amps to kVA (Three Phase) Transformer Calculations: • Transformer Calculator (Current) • Transformer Calculator (Voltage) Horsepower and Current (HP): • DC Horsepower • Single Phase Horsepower • Three Phase Horsepower • DC Current (HP) • Single Phase Current (HP) • Three Phase Current (HP) Efficiency and Power Factor: • Efficiency (DC) • Efficiency (Single Phase) • Efficiency (Three Phase) • Power Factor (Single Phase) • Power Factor (Three Phase) Lighting Calculations: • Luminous Intensity (Light Calculation) • Luminous Flux (Light Calculation) • Solid Angle (Light Calculation) Energy Storage and Cost Calculations: • Energy Cost Calculation • Energy Storage (Resistance) • Energy Storage (Inductance) • Energy Storage (Capacitance) Star-Delta Conversion: • Star to Delta Conversion • Delta to Star Conversion Reactance and Frequency Calculators: • Inductive Reactance • Capacitive Reactance • Resonant Frequency • Inductor Sizing Equation • Capacitor Sizing Equation Series and Parallel Calculations: • Resistance (Series) • Resistance (Parallel) • Inductance (Series) • Inductance (Parallel) • Capacitance (Series) • Capacitance (Parallel) • Unknown Resistance (Series) • Unknown Resistance (Parallel) • Unknown Capacitance (Series) • Unknown Capacitance (Parallel) Other Tools: • DC Generator Electrical Unit Converters: • Electrical Converter • Field Strength • Electrical Potential • Resistance • Resistivity • Conductance • Conductivity • Capacitance • Inductance • Charge • Linear Charge Density • Surface Charge Density • Volume Charge Density • Current • Linear Current Density • Surface Current Density • Power Whether you’re troubleshooting, designing, learning, or estimating, the Electrical Calculator App provides accurate, real-time results to support your electrical work. Download now and enhance your productivity with the most complete electrical calculator toolkit on the App Store.

About

Mike Holt's Electrical Toolbox

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.

Highlights
  • Conductor sizing
  • Voltage drop limitations
  • Circuit protection sizing
  • Race sizing
  • Equipment grounding conductor sizing
  • Dwelling-unit service calculations
Features
Read full description

Mike Holt, the industry leader in the electrical industry (MikeHolt.com) has created an amazing, practical and useful app for the electrician, inspector, instructor, contractor and engineer. The app contains conductor sizing (including voltage drop limitations), circuit protection sizing, race sizing, equipment grounding conductor sizing for electric heating equipment (commercial and Residential), air-conditioning equipment (commercial and Residential), motors (commercial and Residential), Transformers (commercial) , and dwelling-unit service calculations and sizing.

Screenshots

Electrical Calculator lite4 screens
Mike Holt's Electrical Toolbox4 screens

Verdict

The call

Electrical Calculator lite and Mike Holt's Electrical Toolbox both sit at 4.6 stars, but that hides the real split: 77% of Mike Holt's Electrical Toolbox's written reviews are positive against 41% of Electrical Calculator lite's. Mike Holt's Electrical Toolbox also leads on in-app purchases (none vs 2) and ads (none vs shown). Electrical Calculator lite's advantage is update cadence (every 5 weeks vs every 3 months). On price, rating, ratings volume and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Electrical Calculator lite sells 2 one-off in-app purchases. Mike Holt's Electrical Toolbox asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

On the App Store both sit at effectively the same score — 4.6 for Electrical Calculator lite against 4.6 for Mike Holt's Electrical Toolbox. Both are backed by a comparable volume of ratings — 574 and 197 respectively. Written reviews are what separate them: 41% of Electrical Calculator lite's written reviews are positive against 77% of Mike Holt's Electrical Toolbox's.

UpkeepUpdate frequency

Electrical Calculator lite ships an update every 5 weeks, Mike Holt's Electrical Toolbox every 3 months. The most recent releases landed on September 18, 2026 and September 21, 2026 respectively.

Scorecard6 real differences · 4 level
Electrical Calculator lite versus Mike Holt's Electrical Toolbox: the parameters behind the verdict, then further details
ParameterElectrical Calculator liteMike Holt's Electrical Toolbox
PriceFreeFree
Rating4.6 (574 ratings)4.6 (197 ratings)
Positive reviews40.6% of reviews76.7% of reviews — better
Number of ratings574 — better197
Update frequencyEvery 5 weeks — betterEvery 3 months
AdsYesNo — better
In-app purchasesYesNo — better
MonetizationFree with in-app purchasesFree — better
DevicesiPhone, iPad, MaciPhone, iPad, iPod
Requires iOS17.614.0 — better
Further details — not scored
Size65 MB26 MB
Age rating4+4+
DeveloperV PUGAZHENTHIMike Holt Enterprises

Customer experience

Electrical Calculator lite

All ratings574 ratings
Positive90.2%
Neutral4.4%
Negative5.4%
Written reviews32 reviews
Positive40.6%
Neutral6.3%
Negative53.1%

Mike Holt's Electrical Toolbox

All ratings197 ratings
Positive90.4%
Neutral1.5%
Negative8.1%
Written reviews30 reviews
Positive76.7%
Neutral6.7%
Negative16.7%

User reviews

Electrical Calculator lite

From 574 App Store ratings

What we love

  • 👍 Very helpful formulas for homework
  • 👍 Easy to use interface
  • 👍 Comprehensive electricity app, a true Swiss Army knife
  • 👍 Well-designed, intuitive, and aesthetic interface
  • 👍 Great for work, very useful

Room to improve

  • anúncios são muito irritantes
  • 💰 Useful features are paywalled (RMS calculator, transformer calculator, MVA/current calculator)
  • 💰 Costs too much
  • 💰 Extremely basic calculators, rest require purchase
  • 💰 Unlock option doesn't work

Mike Holt's Electrical Toolbox

From 197 App Store ratings

What we love

  • 👍 Great app for electricians
  • 💡 Provides code article references
  • 👍 Useful for on-the-spot reference
  • 👍 Excellent for verifying calculations
  • 👍 Helpful for exam preparation

Room to improve

  • 🐛 Emailing results not working
  • 🐛 Outdated information
  • 🐛 Load calc a little clunky
  • 🐛 Content setup needs overhaul
  • 🐛 Video series lacks completion system

Bugs and requests

Electrical Calculator lite

Reported bugs

2 issues
  • Unlock option doesn’t work
  • Voltage drop calculator is incorrect compared to other apps

Requested features

3 requests
  • Output vs frequency sweep plotting for resonance points or impedance graphs for RL and RC circuits
  • Add MHz option for capacitive and inductive reactance calculators
  • Add MHz option for resonance frequency calculator

Mike Holt's Electrical Toolbox

Reported bugs

4 issues
  • Cannot email results
  • Video player widescreen exit bug
  • Previous calculation data not erased
  • App content is outdated

Requested features

6 requests
  • Increase transformer capacity to 225kva
  • Add option to print load calc
  • Update to NEC 2020
  • Add completion system for video series
  • Refine user interface for better usability
Show 1 more
  • Add more features, willing to pay extra

In-app purchases

2 purchases

Electrical Calculator lite

One-time2
  • 16 Electrical Converters$0.99
  • Electrical Calculators$3.99
None

Mike Holt's Electrical Toolbox

No in-app purchases

Questions

Is Electrical Calculator lite free?
Electrical Calculator lite is free to download, with in-app purchases available.
Is Mike Holt's Electrical Toolbox free?
Mike Holt's Electrical Toolbox is free to download, with no in-app purchases.
Which has better reviews, Electrical Calculator lite or Mike Holt's Electrical Toolbox?
Electrical Calculator lite and Mike Holt's Electrical Toolbox are both rated 4.6 out of 5 on the App Store, from 574 and 197 ratings respectively.
Do Electrical Calculator lite or Mike Holt's Electrical Toolbox have ads?
Electrical Calculator lite shows ads; Mike Holt's Electrical Toolbox does not.
Which is updated more often, Electrical Calculator lite or Mike Holt's Electrical Toolbox?
Electrical Calculator lite ships an update every 5 weeks, and Mike Holt's Electrical Toolbox every 3 months. Most recently, Electrical Calculator lite was updated on September 18, 2026 and Mike Holt's Electrical Toolbox on September 21, 2026.

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