1. What is an Electric Running Cost Calculator?

Definition: This calculator estimates the cost of electricity consumption based on device power, usage time, and electricity rate.

Purpose: It helps consumers and businesses estimate their electricity expenses for various appliances and equipment.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( \text{Cost} \) — Electricity cost in dollars
• \( P \) — Power consumption in watts
• \( t \) — Usage time in hours
• \( \text{Rate} \) — Electricity rate in dollars per kilowatt-hour

Explanation: The formula converts watts to kilowatts (by dividing by 1000) and multiplies by hours and rate to get total cost.

3. Importance of Electricity Cost Calculation

Details: Understanding electricity costs helps with budgeting, comparing appliance efficiency, and identifying energy-saving opportunities.

4. Using the Calculator

Tips: Enter the device's power consumption in watts, usage time in hours, and your electricity rate (default $0.12/kWh). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find my electricity rate?
A: Check your utility bill or contact your electricity provider. Rates typically range from $0.10 to $0.30 per kWh.

Q2: How do I find an appliance's power consumption?
A: Check the label or manual, or use a wattage meter. Typical values: LED bulb (10W), laptop (50W), refrigerator (150W), AC (1000W).

Q3: Why divide by 1000 in the formula?
A: This converts watts to kilowatts, since electricity is billed per kilowatt-hour (kWh).

Q4: Can I calculate monthly costs with this?
A: Yes, multiply daily usage hours by 30 or enter total monthly hours directly.

Q5: Does this include all utility charges?
A: No, this calculates energy cost only. Your bill may include additional fees and taxes.