1. What is the Watts per Hour Cost Calculator?

Definition: This calculator estimates the electricity cost based on power consumption in watts, usage time, and the current electricity rate in the Philippines.

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

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( C \) — Electricity cost (Philippine Peso)
• \( P_w \) — Power consumption (watts)
• \( t \) — Usage time (hours)
• \( C_{kWh} \) — Electricity rate (Peso per kilowatt-hour)

Explanation: The power consumption is multiplied by time to get watt-hours, converted to kilowatt-hours (divided by 1000), then multiplied by the electricity rate.

3. Importance of Electricity Cost Calculation

Details: Accurate cost estimation helps in budgeting, energy conservation, and comparing appliance efficiency.

4. Using the Calculator

Tips: Enter the power consumption in watts, usage time in hours, and electricity rate (default 11.43 ₱/kWh for 2024). All values must be > 0.

5. Frequently Asked Questions (FAQ)

Q1: Where can I find my appliance's wattage?
A: Check the label or manual of your appliance, or use a wattage meter for accurate measurement.

Q2: Is 11.43 ₱/kWh accurate for all areas?
A: This is the 2024 average. Check your Meralco bill for your exact rate as rates vary by location and consumption tier.

Q3: How can I reduce my electricity costs?
A: Use energy-efficient appliances, reduce usage time, and take advantage of off-peak rates if available.

Q4: Does this include taxes and other charges?
A: No, this calculates base consumption cost only. Your actual bill includes additional fees and taxes.

Q5: How accurate is this calculation?
A: It provides a good estimate for constant power draw. For devices with variable consumption (like refrigerators), results may vary.