Electricity Calculator

    Estimate device energy usage and cost.

    Inputs

    About Electrical Power and Energy

    Electrical power and energy are fundamental concepts in electricity and electronics.Power (W) measures the rate at which electrical energy is used or produced, while energy (kWh) measures the total amount of work done or energy consumed over time. Understanding the difference is essential for calculating electricity bills, sizing electrical devices, and analyzing energy efficiency in homes and industries.

    •Features

    • –Calculates instantaneous power consumption for devices in watts (W).
    • –Computes energy usage over time in kilowatt-hours (kWh).
    • –Helps estimate electricity bills based on unit cost and usage duration.
    • –Supports calculation for single-phase and three-phase systems.
    • –Provides insights into energy efficiency and optimal device usage.

    •How to Use

    1. 1.Enter the device voltage (V) and current (A) to calculate instantaneous power.
    2. 2.Optionally, input power factor for AC devices to account for real power usage.
    3. 3.Enter the duration of usage (hours) to compute total energy consumption in kWh.
    4. 4.Use the energy result along with your electricity rate to estimate the cost of running the device.
    5. 5.Compare energy usage across devices to identify high-consumption appliances and optimize efficiency.

    •Key Concepts

    • –Power (W): Rate at which energy is consumed or generated.
    • –Energy (kWh): Total energy consumed over time, commonly used for billing.
    • –Single-phase: Power = V × I × PF
    • –Three-phase: Power = √3 × V_line × I_line × PF
    • –Power Factor (PF): Ratio of real power to apparent power in AC circuits, between 0 and 1.

    •Formulas Used

    • –DC Power: P = V × I
    • –AC Single-Phase Power: P = V × I × PF
    • –AC Three-Phase Power: P = √3 × V_line × I_line × PF
    • –Energy Consumption: E = P × t (where t is time in hours)

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