Electricity Calculator

How the estimate works

The calculator estimates effective power from the appliance wattage and load percentage, then multiplies by runtime to get daily kWh. Cost is estimated from local price per kWh. For better accuracy, adjust runtime and load to match your real usage pattern.

Required formulas: P = E / t and E = P × t . Since bills use kWh, power in watts is converted to kilowatts before multiplying by hours.

Practical energy-saving ideas

• Track high-runtime appliances first; long runtime often drives total cost.
• Switch old lighting to efficient LED where possible.
• Use thermostat scheduling and avoid unnecessary heating/cooling extremes.
• Compare efficient appliances by operating cost, not only purchase price.
• Improve insulation and window performance to reduce HVAC demand.