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.

215+ iOS apps curated and reviewed
Finding the right electricity calculator app can be overwhelming with so many options. We've analyzed 215+ apps to bring you the best choices for 2026, from free options to premium solutions with advanced features.

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 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.






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 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.


This multi-function calculator offers basic to advanced scientific and algebraic computations. It includes features like handwriting recognition, equation solvers, and 2D graphing, making it suitable for students and professionals. In-app purchases unlock advanced capabilities.


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.


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 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 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.


This app offers a customizable and fast calculator experience with a wide variety of themes. It includes scientific and standard modes, real-time results, and calculation history. Personalize your math with over 60 cute and colorful themes, including animated options.


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.


Easily calculate the energy consumption and operating costs of electrical devices. Track daily, monthly, and yearly usage, analyze costs, and estimate carbon emissions to optimize power usage and save money.


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.


This app offers a versatile calculator experience with both standard and scientific modes. Customize its appearance, use it in any orientation, and access additional tools like a notes tab and calculation history. It's designed for students and professionals needing accurate calculations.


This application simplifies electrical series calculations for resistance, inductance, and capacitance. It supports multiple units for flexible input and output, making complex computations quick and effortless for users.


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 collection of electrical wiring diagrams and calculators for home projects. It includes various switch and fan wiring configurations, outlet diagrams, and essential calculators for grounding, circuit breakers, and voltage drop, adhering to NEC standards.


This app offers a powerful graphing calculator experience with touch-based input for enhanced interaction. It supports natural textbook notation, advanced math functions, and various plotting capabilities. Users can also utilize its programming features and built-in tools like unit conversion and a periodic table.


Calculate household electricity usage and costs for various appliances. Track consumption by hour, day, month, or year to identify high-usage devices and save on electricity bills.