Comparison

WireSizer vs ElectriCalc Pro

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

Head to head
About

WireSizer

This app quickly calculates the correct DC wire gauge needed for any circuit. Simply input voltage, current, and length to determine the optimal wire size, considering voltage drop and ampacity limits. It's suitable for various DC systems up to 60 VDC.

Highlights
  • Instant DC wire size calculation
  • Voltage drop percentage selection
  • Ampacity limit checks
  • Supports various wire types and gauges
  • Adjustable for installation conditions
  • Materials list for selections
Features
Read full description

WireSizer is the fast, accurate, and easy-to-use DC wire size calculator for choosing the correct wire gauge every time. Simply select your DC voltage, current, and total circuit length with flips of your finger. No keyboard required. WireSizer instantly calculates the correct wire gauge for the Voltage Drop percentage you need. WireSizer is ideal for: • Boats and marine electrical systems • RVs, trucks, and cars • Radios and electronics • Solar power and battery-based DC systems • Any low-voltage DC system up to 60 VDC Suitable for both professionals and DIY users. WireSizer automatically calculates the minimum wire size required for your circuit (assuming copper wire), taking Voltage Drop into account for installation and temperature conditions. Results are checked against current-carrying capacity (ampacity) limits to prevent using unsafe undersized wire. Supported values: • Voltage up to 60 VDC • Current up to 500 amps • Total circuit length up to 600 feet or 200 meters • Voltage Drop 1 to 20 percent • AWG wire 18 gauge to 4/0, plus 250 & 300 kcmil • SAE wire 18 gauge to 4/0 • Metric wire 0.75 mm² to 150 mm² WireSizer allows you to fine-tune calculations based on real-world installation conditions: • Engine compartment or other high-temperature environments • Sheathed, bundled, or conduit-run wire • Wire insulation ratings from 60°C to 200°C WireSizer also includes a Materials List so you can record and review all of your wire selections in one place. WireSizer calculates DC wire sizes in accordance with ABYC E-11 (July 2025). For typical low-voltage DC circuits, results generally correspond with ISO 13297:2020. Results are a design aid; final wire selection and installation compliance remain the installer's responsibility. Number and decimal formatting will follow your device's regional and language settings. WireSizer works without an internet connection and contains no ads. Designed exclusively for DC circuits - not for use with AC circuits. Results are a design aid. Final wire selection and installation compliance remain the installer's responsibility. WireSizer will cost you less than the wire scraps you probably throw away at the end of the day.

About

ElectriCalc Pro

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.

Highlights
  • NEC compliant calculations
  • Wire and conduit sizing
  • Voltage drop calculations
  • Motor full-load amps
  • Ohm's Law solver
  • Built-in help and tutorials
Features
Read full description

FREE Try Before You Buy trial, your App Store account is not charged by Apple during the free trial. Electrical Contractors, Designers, Electricians, and Lighting Specialists solve tough electrical calculations in seconds and deliver those solutions in conformance with the latest NEC®. The ElectriCalc Pro electrical code calculator is compliant with 2023, 2020, 2017, 2014, 2011, 2008, 2005, 2002, 1999, and 1996 NEC®. The official US-based National Electrical Code® (NEC) ElectriCalc Pro from Calculated Industries for iOS is a full-featured emulation of our popular #5065/#5070 models. ----- Full Functionality of our Pro Handheld Calculator ----- • Experience the power of a professional calculator on your iPhone. • ElectriCalc Pro replicates all features & solutions of our top-rated handheld model. ----- Built-in Help & Tutorials ----- • Press and hold any key for clear definitions, examples, and usage guides. • A complete user manual is also available. ----- Complete Electrical Reference Tool ----- • Save time, trouble, and money with ElectriCalc Pro's comprehensive electrical reference data. • All the info you need for calculations and code compliance is built into one app. The ElectriCalc Pro is a complete electrical reference tool that will save time, trouble, and money. ElectriCalc Pro Solutions: • Wire Sizes • Voltage Drop • Conduit Sizing • Motor Full-Load Amps • Fuse and Breaker Sizes • Service and Equipment Grounding Conductor Sizes • Parallel Resistance • Ohm’s Law Calculations – enter any two values to solve for the third • Circular MILS wire sizes ElectriCalc Pro Calculations: • Work directly in and convert between Amps, Watts, Volts, Volt-Amps, kVA, kW, PF% and EFF%, and DC Resistance • Calculate wire sizes per NEC® 310-16 and 310-17; Copper or aluminum, 3Ø/1Ø, 60°C, 75°C, 90°C insulation ratings and 100% or 125% of ampacity. Can also adjust wire sizes for ambient temperatures other than 30◦ C and more than three wires in a raceway • Integrated voltage drop solutions. Find minimum VD wire size, maximum length for any given wire size, drop percentage, actual number and percentage of Volts dropped • Conduit sizing for 12 types of conduit. Plus, it gives fill percentages, cross-sectional areas, remaining areas, and more • Find Motor Full-Load Amps per current NEC®. Works in 1Ø and 3Ø with the newly expanded tables for 3Ø induction (to 500 hp), synchronous (to 200 hp), and DC motors per NEC® 430-247, 430- 248 and 430-250 • Calculates Fuse and Breaker Sizes per NEC® 430-52 • Parallel and derated wire sizing • Parallel Resistance • NEC Table number displays when performing Wire Size calculations • Sizes overload protection per NEC® 430-32 • Automatically finds NEMA starter sizes • Calculates service and equipment grounding conductor sizes per NEC®: 250-122 and 250-66. • Enter BTU to find Kilowatts per Hour • Enter Kilowatts per Hour to find BTU • Ohm’s Law Calculations – enter any two values to solve for the third • Enter, solve, or convert to Circular MILS wire sizes Note: Electrical math is universal. However, code-based sizing solutions are based on the US National Electrical Code® (NEC); users in other countries should check with their local Code Officials for applicability. SUBSCRIPTION INFORMATION The first seven days are free. Subscriptions offered will automatically renew at the end of the chosen period. Upon purchase confirmation and completion of a free trial, payment will be charged to your Apple account. The subscription will automatically renew unless auto-renew is turned off or the subscription is canceled in settings at least one day (24 hours) before the subscription period ends. You can manage your subscription and turn off auto-renewal in your Apple account Settings > Account (Apple ID) > Subscriptions. TRADEMARKS ElectriCalc(TM) and Calculated Industries® are trademarks and registered trademarks of Calculated Industries, Inc. Copyright 2024

Screenshots

WireSizer4 screens
ElectriCalc Pro4 screens

Verdict

The call

The clearest difference is price: ElectriCalc Pro at Free against WireSizer's $4.99. ElectriCalc Pro also leads on rating (4.9 vs 4.5) and iOS requirement (14.0 vs 26.0). WireSizer's advantage is in-app purchases (none vs 2) and update cadence (every 5 months vs every 10 months). On review sentiment, ratings volume, ads 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

ElectriCalc Pro is free to download; WireSizer costs $4.99 up front. ElectriCalc Pro sells 2 in-app purchases, starting at $4.99 per month. WireSizer asks for nothing beyond the download.

ReceptionRating · Positive reviews · Number of ratings

ElectriCalc Pro holds the better App Store score, 4.9 against 4.5. Both are backed by a comparable volume of ratings — 226 and 354 respectively. Written reviews complicate that: 84% of WireSizer's written reviews are positive against 78% of ElectriCalc Pro's, so the app with the better star average is not the one people write more warmly about.

UpkeepUpdate frequency

WireSizer ships an update every 5 months, ElectriCalc Pro every 10 months. The most recent releases landed on October 13, 2026 and October 11, 2026 respectively.

Scorecard6 real differences · 4 level
WireSizer versus ElectriCalc Pro: the parameters behind the verdict, then further details
ParameterWireSizerElectriCalc Pro
Price$4.99Free — better
Rating4.5 (226 ratings)4.9 (354 ratings) — better
Positive reviews83.8% of reviews — better78.1% of reviews
Number of ratings226354 — better
Update frequencyEvery 5 months — betterEvery 10 months
AdsNoNo
In-app purchasesNo — betterYes
MonetizationPaidFree with in-app purchases — better
DevicesiPhone, iPadiPhone, iPad, iPod — better
Requires iOS26.014.0 — better
Further details — not scored
Size2 MB29 MB
Age rating4+12+
DeveloperJuggernaut Technology, Inc.Calculated Industries

Customer experience

WireSizer

All ratings226 ratings
Positive87.6%
Neutral1.3%
Negative11.1%
Written reviews37 reviews
Positive83.8%
Neutral2.7%
Negative13.5%

ElectriCalc Pro

All ratings354 ratings
Positive98.9%
Neutral0.3%
Negative0.8%
Written reviews32 reviews
Positive78.1%
Neutral6.3%
Negative15.6%

Bugs and requests

WireSizer

Requested features

6 requests
  • AC calculation for higher voltages
  • Support for higher DC voltages (e.g., 150VDC)
  • Support for AC voltages (e.g., 240VAC)
  • Include actual voltage drop on final screen
  • More variables like wire ampacity and cables in a bundle
Show 1 more
  • Support for longer lengths

ElectriCalc Pro

Not enough reviews yet to summarise bugs or requests.

In-app purchases

None

WireSizer

No in-app purchases

2 purchases

ElectriCalc Pro

Subscriptions2
  • 1 Month Full Access7 Days trial$4.991 Month
  • 1 Year Full Access7 Days trial$39.991 Year

Questions

Is WireSizer free?
WireSizer costs $4.99, with no in-app purchases.
Is ElectriCalc Pro free?
ElectriCalc Pro is free to download, with in-app purchases available.
Which has better reviews, WireSizer or ElectriCalc Pro?
ElectriCalc Pro is rated higher. WireSizer averages 4.5 out of 5 from 226 ratings, while ElectriCalc Pro averages 4.9 from 354 ratings.
Do WireSizer or ElectriCalc Pro have ads?
Neither WireSizer nor ElectriCalc Pro shows ads.
Which is updated more often, WireSizer or ElectriCalc Pro?
WireSizer ships an update every 5 months, and ElectriCalc Pro every 10 months. Most recently, WireSizer was updated on October 13, 2026 and ElectriCalc Pro on October 11, 2026.

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