Best Transformer Calculator Plus Apps

248+ iOS apps curated and reviewed

4.6 avg rating

17 free apps

Updated August 2026

Finding the right transformer calculator plus apps can be overwhelming with so many options. We've analyzed 248+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

Compare top Transformer Calculator Plus Apps (August 2026)

#	App	Price	Rating	Ads	In-App Purchases	Updated
1	Transformer Calculator Plus	$2.99	3.3★ (4)	No	No	Sep 2026
2	Transformer Calculator.	Free	4.8★ (47)	Yes	Yes	Aug 2026
3	Transformer Calculator Pro	Free	—	No	Yes	May 2026
4	Calculator‰	Free	4.9★ (409K)	Yes	No	Sep 2026
5	Calculator: EasyCalc	Free	5.0★ (4)	Yes	Yes	Sep 2026
6	Calculator·	Free	4.9★ (34K)	Yes	Yes	Sep 2026
7	Transformer Calculation Tool	Free	—	No	Yes	Jun 2026
8	Calculator⁻	Free	4.4★ (3.6K)	Yes	No	Sep 2026

Top Picks for Transformer Calculator Plus

#1

Transformer Calculator Plus by Nitrio

Step-up Step-down Transformer

Editor's Choice

🔧 Utilities

3.3(4 ratings)

$2.99

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This utility app calculates key parameters for transformers, including voltage, current, and turns ratio. It helps determine if a transformer is step-up or step-down, essential for power conversion applications.

#2

Transformer Calculator. by V PUGAZHENTHI

primary / secondary

Strong Contender

🔧 Utilities

4.8(47 ratings)

FreeAdsIn-App Purchases

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This app simplifies transformer calculations for engineers and students. It accurately computes primary and secondary currents, turns ratios, and secondary voltages based on user inputs for transformer ratings and winding turns.

#3

Transformer Calculator Pro by Nanjibhai Gorasiya

Power Transformer Design

Worth Considering

🔧 Utilities

0.0(0 ratings)

FreeIn-App Purchases

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More Transformer Calculator Plus apps to explore

Default Calculator

This utility app offers a clean and intuitive interface for performing calculations. It prioritizes a user-friendly design with large buttons and a clear display for quick and efficient use.

Large buttonsClear displayFast calculations

Calculator: EasyCalc

Calculator: EasyCalc

Calculator: EasyCalc

Smart Calculator & Converter

This app offers a comprehensive suite of calculation tools, including basic, scientific, and financial calculators, alongside unit conversions and personal utilities. It simplifies everyday math, financial planning, and unit transformations for students and professionals alike.

Basic and scientific calculationsFinancial and loan calculatorsUnit conversion

free with in-app purchases

Big Basic Calculator

This app offers a straightforward calculation experience, focusing on essential functions without unnecessary complexity. It includes basic arithmetic, percentage calculations, and advanced functions like square root. Users can customize the appearance with multiple color schemes and utilize features like result copying and split-screen multitasking on iPad.

Basic arithmetic operationsPercentage calculationsMultiple color schemes

free with in-app purchases

Transformer Calculation Tool

Transformer Calculation Tool

Transformer Calculation Tool

Voltage & Turns Ratio Calc

Best hand calculator

A straightforward calculator app designed for simplicity, offering basic arithmetic operations and percentage calculations. It allows users to record and recall past results, customize colors, and enable touch sounds for a personalized experience.

Basic arithmetic operationsPercentage calculationsRecord and recall results

Power Calculator

Power Calculator

Power Calculator

by Power Continuity Limited

This app provides a straightforward calculator designed for the electrical industry, offering tools for power and lighting calculations. It helps users determine generator and UPS requirements, convert units, and calculate fuel consumption. Suitable for both professionals and casual users needing electrical calculations.

KW, kVA, and Amps calculationGenerator requirements calculation (single/three phase)UPS requirements calculation (single/three phase)

Calculation Transformers

Calculation Transformers

Calculation Transformers

Transformer Math Tool

BaseCalc Electric Calculator

BaseCalc Electric Calculator

BaseCalc Electric Calculator

NEC Calculator Tools

This app provides electricians with essential calculation tools for job-site field math, including voltage drop, wire sizing, and conduit fill. It offers a comprehensive suite of 18 calculators, saves calculation history, and allows for the creation and export of job worksheets.

18 essential electrical calculatorsNEC-aware calculationsVoltage drop and wire sizing

free with in-app purchases

Scientific Calculator Plus 991

Scientific Calculator Plus 991

Scientific Calculator Plus 991

NCalc & CalcES Calculator 115

This app is a powerful scientific calculator with graphing capabilities, a formula library, and a unit converter. It offers natural display input, advanced math functions for algebra, calculus, and statistics, and supports various number bases and formats.

Natural display inputGraphing moduleFormula library

free with in-app purchases

The Best Scientific Calculator

This advanced calculator app offers a powerful math core and algebra engine for basic to complex calculations. It includes features like step-by-step solutions, handwriting recognition, and 2D graphing, making it suitable for students, engineers, and programmers.

Step-by-step solution hintsMath Photos SolverHandwriting Recognition

free with in-app purchases

Audio Transformer Calculator

Audio Transformer Calculator

Audio Transformer Calculator

3 in 1 transformer calculator

This app simplifies the calculation of power and audio transformers for DIY electronics projects, particularly tube amplifiers. It handles various transformer types and core configurations with user-friendly input of voltages, currents, or impedances. Enhanced features offer more capabilities than traditional spreadsheet calculators.

Calculate power transformersCalculate audio transformers (push-pull, single-ended)Supports tube amplifier builds

PTI Transformer

PTI Transformer

PTI Transformer

by Push Interactions, Inc.

This app calculates electrical transformer performance metrics like current, voltage, efficiency, and regulation. It also offers SI/Metric conversions for various physical quantities and includes a tool for estimating ship dates based on order time.

Transformer current, voltage, efficiency, and regulation calculationSI/Metric unit conversionsSpeed, force, power, area, pressure, volume, temperature, weights & measures conversions

📊 Productivity

Calculator with History +

Calculator with History +

Calculator with History +

No ads & Scientific calculator

This free calculator app offers a fast, ad-free experience with a visual input and calculation history. Customize your experience with various keyboard sounds and colors, and access advanced scientific functions when needed.

Ad-free experienceCalculation historyVisual input

free with in-app purchases

Simple, big screen and buttons

This app offers a straightforward calculator with a large display and oversized buttons for easy operation. It's designed for everyday tasks, enabling users to perform fundamental arithmetic like addition, subtraction, multiplication, and division with clarity and convenience.

Big display and buttonsEasy to useBasic calculations

Wire Size & Voltage Drop

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

free with in-app purchases

Calculator, basic and advanced

Calculator, basic and advanced

Calculator, basic and advanced

This app offers a comprehensive calculator with both simple and advanced modes. It includes an equation solver with step-by-step explanations, calculation history, graphing capabilities, and table generation for multiple inputs. Supports a wide range of mathematical operators and functions.

Simple and advanced calculation modesStep-by-step equation solverCalculation history

Ohmly: Electrical Calculator

Ohmly: Electrical Calculator

Ohmly: Electrical Calculator

Ohm's law, AWG, SMD & more

$0.99 | 100% OFF

FAQ about Transformer Calculator Plus

What are the best transformer calculator plus apps for iPhone?

Transformer Calculator Plus tops our transformer calculator plus apps ranking as of August 2026, with a 3.3-star average from 4 App Store ratings, and it's priced at $2.99.

Are there free transformer calculator plus apps for iPhone?

Yes — 17 of the top transformer calculator plus apps we rank are free to download, including Transformer Calculator. and Transformer Calculator Pro.

Does Transformer Calculator Plus have ads or in-app purchases?

Transformer Calculator Plus has no ads and has no in-app purchases, according to its App Store listing as of August 2026.

How many transformer calculator plus apps are on the App Store?

We track 248+ transformer calculator plus apps on the iOS App Store as of August 2026, ranked by rating, recency, and analysis of real user reviews.

What calculations can Transformer Calculator Plus perform?

Transformer Calculator Plus can calculate the transformer turns ratio based on voltage and turns, or current and turns. It also determines whether the transformer is step-up or step-down.

What is the price of Transformer Calculator Plus?

Transformer Calculator Plus is a paid app, priced at $2.99.