Electricity Cost Calculator – Know Your Energy Expenses

Ever wonder how much that fridge, air conditioner, or LED lamp is costing you? You plug it in every day, but the small numbers on your bill don’t tell the full story. The Electricity Cost Calculator helps you understand your energy usage in dollars (or your local currency) — daily, monthly, and yearly — so you can make smarter decisions, save money, and plan your energy budget.

Why You Should Care About Your Electricity Usage

Electricity bills can add up quickly, especially if you have high-power appliances running daily. Understanding your costs helps you:

• Compare appliances before buying a new one.
  
• Reduce unnecessary energy consumption.
  
• Plan your monthly and yearly budgets accurately.
  
• Make informed choices about energy-efficient products.
  

What You Need to Enter

To calculate costs accurately, the calculator asks for:

• Appliance Wattage (W): Check the appliance label or manual. If only amps are listed, multiply by voltage.
  
• Hours per Day: Average time the appliance runs each day. You can enter decimals (e.g., 1.5 hours).
  
• Cost per kWh ($): Your electricity rate per kilowatt-hour. Look at your energy bill.
  
• Currency: Choose the currency symbol to display costs (e.g., $, €, £).
  

Optional: You can calculate multiple appliances or include standby power for a more complete picture.

How the Calculator Works

Here’s what happens behind the scenes:

If you have several appliances, repeat these steps and sum the results for total energy cost.

Step-by-Step Example

Example 1: 100 W LED Lamp, 5 hours/day, $0.15/kWh

• Daily energy: (100 × 5)/1000 = 0.5 kWh
  
• Daily cost: 0.5 × $0.15 = $0.075 (7.5 cents)
  
• Monthly: 0.075 × 30 = $2.25
  
• Yearly: 0.075 × 365 = $27.38
  

Example 2: 1500 W Space Heater, 4 hours/day, $0.20/kWh

• Daily energy: (1500 × 4)/1000 = 6 kWh
  
• Daily cost: 6 × $0.20 = $1.20
  
• Monthly: $36
  
• Yearly: $438
  

Clearly, high-wattage appliances can cost much more over time, even if they run only a few hours per day.