How to Use This Calculator
- Enter your power consumption in kilowatts (kW). This is the total power your device or system uses, measured in kilowatts.
- Input the number of hours you use the device or system per day.
- Enter your electricity rate, which is the cost per kilowatt-hour ($/kWh) provided by your electricity provider.
- Click the "Calculate" button to see your daily, monthly, and annual electricity costs.
- Use the "Reset" button to clear all inputs and start over.
Understanding the Formula
The calculator uses the following formula to determine your electricity costs:
Daily Cost = Power Consumption (kW) × Usage Hours × Electricity Rate ($/kWh)
This formula calculates the energy consumption in kilowatt-hours (kWh) by multiplying your power consumption by usage hours, then multiplies by your electricity rate to determine the cost.
Example
For instance, if you have a device that consumes 1.5 kW of power and you use it for 5 hours a day, with an electricity rate of $0.15 per kWh:
- Power Consumption: 1.5 kW
- Usage Hours: 5 hours
- Electricity Rate: $0.15/kWh
- Daily Cost: 1.5 × 5 × 0.15 = $1.125
- Monthly Cost: $1.125 × 30 = $33.75
- Annual Cost: $1.125 × 365 = $410.63
Practical Applications
This calculator can help you:
- Understand your electricity costs better
- Identify devices that contribute most to your energy bill
- Make informed decisions about energy efficiency improvements
- Compare the costs of different devices or systems