213+ iOS apps curated and reviewed
From beginner-friendly picks to power-user tools, our watts amps volts calculator list covers 213+ iPhone apps updated through May 2026. Compare ratings, prices, and screenshots in one place.
This app serves as an advanced electrical power calculator. It allows users to easily compute and convert between Watts, Amps, and Volts for single-phase systems, and kW, Amps, Volts, and Power Factor for three-phase systems. Simply input known values to find the missing one.
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.
Easily calculate electrical power, amperage, or voltage. This tool simplifies electrical calculations for users needing to find one value when the other two are known.
This tool simplifies electrical calculations for power, current, and voltage. It's designed for professionals, hobbyists, and students to quickly and accurately manage electrical projects.
Easily calculate and convert electrical values like kVA, kW, Amps, Volts, and Power Factor. Supports both single and three-phase calculations for engineers working with power systems.
This app offers both basic and scientific calculation modes with over 30 scientific operations. It allows for customization of the app's appearance and includes features for note-taking, drawing, and viewing calculation history. It supports high accuracy calculations and nested parentheses.
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.
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.
This app offers both basic and advanced scientific calculations with an intuitive interface designed for tablets and phones. It includes features like currency conversion, calculation history, and the ability to share results. An optional premium membership removes ads and provides enhanced support.
This app offers a comprehensive suite of electrical calculations and conversions for professionals and students. It handles diverse units and provides precise results for various electrical engineering tasks, including voltage, current, power, and more.
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.
Easily calculate wattage using three different formulas. Input values and get instant results, with options to copy or email your calculations. Features an intuitive design for a smooth and reliable user experience.
This comprehensive calculator app offers a wide range of tools for everyday calculations, from basic arithmetic and scientific functions to unit and currency conversions. It includes specialized calculators for loans, health, fuel costs, GPA, and more, all within a clean and user-friendly interface.
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.
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.
Calculate the annual cost and energy consumption of your electrical devices. Determine how long it will take for energy-saving appliances to become profitable. This tool helps you understand your energy usage and make informed decisions.
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.
This app offers a comprehensive suite of over 40 calculators and unit converters for various needs, including finance, health, construction, and everyday math. It features standard, scientific, and specialized calculators for tasks like loan amortization, currency conversion, and material estimation.
This app offers a free basic and scientific calculator with an intuitive interface. It supports fractions, percentages, and advanced editing. Optional upgrades provide specialized calculators for fractions with units, polynomial and linear equation solving, graphing, and geometric shapes.
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.