Best Power Grid Calculator Apps

National Grid

by National Grid plc

Free

Manage your utility account securely and conveniently from your mobile device. Access billing, make payments, report outages, and view usage. Features biometric login for quick and secure access.

Blackout Math.Power Calculator

Calculate your power needs

Free

This app helps you accurately calculate power outage durations and battery performance. It factors in real-world conditions like battery discharge, inverter efficiency, and device consumption to provide realistic estimates for power longevity and charging times.

Desmos Scientific Calculator

by Desmos

Free

This app offers a powerful scientific calculator with a wide range of functions for trigonometry, statistics, and combinatorics. Users can define and evaluate their own functions, assign values to variables, and view multiple expressions simultaneously. It works offline and is completely free to use.

Fault Current Calculator

by Cooper Bussmann, LLC

Free

This tool helps contractors, engineers, and electricians quickly calculate available fault current on single and three-phase electrical systems. It also assists in sizing fuses and conductors for various circuits and can generate labels for service equipment.

Watts Amps Volts Calculator

Electrical power calculator

Free

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.

Power Calculators & Converters

Useful for power generators.

Free

This application provides accurate calculations and conversions for various power units, including watts and horsepower. It's designed for professionals and students needing to simplify complex energy and power calculations for generators and devices.

Dakota's Electrical Calculator

Voltage Drop, Conduit & Wire

Free

This app provides electricians and apprentices with essential tools for on-the-job tracking and NEC-aligned calculations. It helps with circuit analysis, load calculations, conduit fill, motor and transformer computations, and voltage drop assessments for field use and exam preparation.

kVA Calculator

kVA kW Amps Power Factor Volts

Free

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.

Electrical Engineering - lite

60 calculations with circuits

Free

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.

Electrical Power Calculator

Electrical Calculator

$2.99

This app provides precise mathematical and scientific calculations for various needs. It helps users calculate generator and UPS requirements, convert lumens to watts, and estimate generator fuel consumption. It's designed for students, professionals, and anyone needing accurate computations.

Southwire® Voltage Drop Calc

Southwire Calculator

Free

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.