1. What is the Electricity Cost Calculator?

This calculator helps you determine the electricity cost of running electrical appliances in Malaysia based on their wattage, usage time, and current electricity rate per kWh.

2. How Does the Calculator Work?

The calculator uses the formula:

Where:

• \( W \) — Device wattage (watts)
• \( h \) — Usage time (hours)
• \( Cost/kWh \) — Electricity rate (MYR per kilowatt-hour)

Explanation: The formula converts watts to kilowatts (dividing by 1000), multiplies by usage hours to get kWh, then multiplies by the cost per kWh.

3. Understanding Electricity Costs in Malaysia

Details: Malaysia uses a tiered electricity tariff system. The default rate in this calculator (0.218 MYR/kWh) represents the average residential rate, but actual rates may vary based on consumption tiers and current TNB tariffs.

4. Using the Calculator

Tips:

• Find your device's wattage on its label or specifications
• For devices with variable wattage, use average or maximum wattage
• Check current TNB rates for most accurate calculations
• For monthly estimates, multiply daily usage by 30

5. Frequently Asked Questions (FAQ)

Q1: How do I find my device's wattage?
A: Check the device label, manual, or specifications online. If only amps and volts are listed, multiply them (W = A × V).

Q2: What's the average electricity rate in Malaysia?
A: Residential rates average around 0.218 MYR/kWh but vary by consumption tier (higher usage = higher rates).

Q3: How accurate is this calculator?
A: It provides estimates. Actual costs may vary due to power factor, device efficiency, and voltage fluctuations.

Q4: Can I calculate monthly costs?
A: Yes, either enter total monthly hours or calculate daily cost × 30 days.

Q5: Why divide by 1000 in the formula?
A: To convert watts to kilowatts (1 kW = 1000W), since electricity is billed per kilowatt-hour.