Estimate appliance energy use and cost from wattage, hours, days, quantity, and rate.
Keep a record of the assumptions behind the result and compare nearby scenarios before making a decision.
Cost = watts ÷ 1000 × hours per day × days × device count × price per kWh.
This result reflects only the values and assumptions shown above. It does not automatically include taxes, fees, market changes, local rules, or personal circumstances unless those inputs are explicitly present.
These are demonstration assumptions, not market data or a recommendation. Use Reset example above to reproduce this result, then replace the values for your own scenario.
Example result: 144 USD
The example is fixed while your live result above changes. Differences in display rounding do not change the underlying calculation.
Replace the examples with your real values. Results update instantly as inputs change.
Try conservative, baseline, and optimistic inputs to see whether the conclusion holds.
Review the formula and limitations, then verify important decisions with authoritative sources.
Cost = watts ÷ 1000 × hours per day × days × device count × price per kWh.
Standby power, duty cycles, tiered rates, taxes, demand charges, and time-of-use pricing require additional assumptions.
No. This calculation runs locally in your browser and the values you enter are not sent to a CalcMintly database.