Free environment & sustainability calculator

Electricity Cost & Usage Calculator

Calculate electricity cost from consumption, tariff and a selectable display currency.

Enter your details

per kWh
display only

Calculation method

Annual cost = annual kWh × price per kWh. Monthly input is annualized by multiplying by 12.

Your result

Estimated annual electricity cost
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Entered-period cost
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Annual energy
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Rate
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Monthly average
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Currency selection changes the display symbol only; the calculator does not perform currency exchange. Enter a rate in the selected currency.

How to use this calculator

What to enter

Enter or select the following as requested: Electricity rate; Currency. Follow the units, valid ranges, examples, and options displayed beside each field.

What the result means

The electrical or energy result is based on the ratings, load, duration, voltage, efficiency, and other values requested by the form. Confirm units and design assumptions; real performance depends on losses, environmental conditions, and equipment specifications.

When to use it

Use this for preliminary energy estimates or equipment planning. For electrical installation, safety, or code compliance, verify the result against manufacturer data and applicable professional standards.