Electrical Power Calculator

Find power consumption, energy usage, and electricity cost.

Calculate

Formula

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P = V × I

Power in Watts

Cost = P × t × rate / 1000

Energy cost from power, time, and electricity rate

A 2000W heater running 5 hours uses 10 kWh. At €0.35/kWh, that costs €3.50. Use this to estimate monthly appliance costs.