Where do I find wattage?
It is usually printed on a label on the back or bottom of the appliance.
Calculator
Enter your values
Analysis
Interpretation of the current calculator output
Enter values to see detailed analysis and insights.
How to Use
Step-by-step instructions
- 1Enter the appliance wattage.
- 2Enter the daily usage in hours.
- 3Enter your electricity rate (default $0.15/kWh).
- 4The calculator will estimate daily, monthly, and yearly costs.
Energy Cost
Calculates energy consumption in kilowatt-hours (kWh) and multiplies by the electricity rate.
Cost = (Watts x Hours / 1000) x RateVariables:
WattsPower rating of applianceHoursUsage timeRateCost per kWhExample
100W Bulb
Inputs:
Watts:100
Hours:5
Rate:$0.15
Steps:
- 1.kWh = (100 * 5) / 1000 = 0.5 kWh
- 2.Cost = 0.5 * 0.15 = $0.075 per day
Result:
$0.08 / day