Electricity Cost Calculator

Understanding how your daily habits contribute to your electricity bill is the first step toward managing and reducing your energy expenses. The cost of running an electrical appliance is determined by three main factors: its power consumption in watts, how long you use it for, and the price your energy supplier charges per kilowatt-hour (kWh).

An appliance's power rating is measured in watts (W). A higher wattage means more power is consumed. To calculate energy usage, this is converted to kilowatts (1 kW = 1000W) and multiplied by the hours of use. For example, a 2000W oven used for one hour consumes 2 kWh of energy. If your electricity rate is 24.5p per kWh, that hour of baking would cost you 49p. This calculator automates this process for you, even allowing you to combine multiple appliances for a comprehensive overview.

By analysing individual appliances, you can identify which devices have the biggest impact on your bill. Often, items that generate heat, like kettles, ovens, and tumble dryers, are the most power-hungry. Being mindful of their use, or switching to more energy-efficient models, can lead to significant savings over time. For a complete picture of your home energy spending, consider using this tool alongside our Energy Bill Calculator.