Electricity Cost Calculator
Estimate electricity cost from usage and your entered tariff.
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Currency: Amounts are calculated in the currency you select; this site does not convert between currencies and does not use live exchange rates.
What this tool does
Estimate electricity cost from usage and your entered tariff. Taxes, standing charges, time-of-use and demand charges are not included.
How to use the Electricity Cost Calculator
- Enter or select appliance watts.
- Enter or select hours per day.
- Enter or select days used.
- Enter or select electricity price per kwh.
- Read the calculated result; change any measurement to compare alternatives.
Formula
kWh=watts×hours×days/1000; cost=kWh×rate
- watts
- Appliance watts
- hours
- Hours per day
- days
- Days used
- rate
- Electricity price per kWh
Taxes, standing charges, time-of-use and demand charges are not included.
Worked example
For electricity cost calculator, the following measurements illustrate the exact method: Appliance watts: 1000; Hours per day: 4; Days used: 30; Electricity price per kWh: 0.16.
Inputs
- Appliance watts1000
- Hours per day4
- Days used30
- Electricity price per kWh0.16
Result
- Energy cost$19.20
- Energy (kWh)120
Results explained
- Energy cost
- Energy cost from the formula above. Taxes, standing charges, time-of-use and demand charges are not included.
- Energy (kWh)
- Energy (kWh) from the formula above. Taxes, standing charges, time-of-use and demand charges are not included.
Frequently asked questions
kWh=watts×hours×days/1000; cost=kWh×rate
Taxes, standing charges, time-of-use and demand charges are not included.
No. Electrical and HVAC results are estimates. Installation must comply with local codes and be checked by a qualified licensed professional.
Nameplate values, conductor temperature, power factor, efficiency, weather and actual installation conditions may differ from your entered assumptions.
Confirm units, manufacturer data and the formula's assumptions, then verify sizing with the equipment instructions and applicable local standards.