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Energy cost calculator FullScreen

Estimate and calculate the cost of energy consumption based on usage, rates, and applicable fees. Ideal for budgeting, comparing appliances, and optimizing energy efficiency. Get accurate insights into your energy costs using this convenient online tool.

Select country:  
Typical appliance:
Power consumption:
Hours of use per day: h/day
Energy consumed per day: kWh/day
1 kilowatt-hour (kWh) cost:
Energy cost per day:  
Energy cost per month:  
Energy cost per year:  


What is Energy cost calculator

An energy cost calculator is a tool used to estimate or calculate the cost of energy consumption based on various factors such as energy usage, electricity rates, and billing period. It helps individuals or businesses understand and manage their energy expenses.

Here are the general steps involved in using an energy cost calculator:

  1. Identify the energy rate: Determine the applicable rate for your location, which is typically provided by your energy provider. This may include components such as the base rate, tiered rates, time-of-use rates, or any additional charges like taxes or fees.

  2. Note the billing period: Determine the duration for which the energy consumption is being calculated. This could be monthly, quarterly, or annually, depending on your billing cycle.

  3. Gather consumption data: Obtain the measurement of energy consumption in units such as kilowatt-hours (kWh) for the billing period. This information can usually be found on your electric meter or previous energy bills.

  4. Enter the consumption and rate information: Input the energy consumption data and the applicable rate structure into the energy cost calculator. Some calculators may also require additional details, such as fixed charges or taxes.

  5. Calculate the estimated energy cost: Use the calculator to determine the estimated cost of energy usage based on the provided inputs. The calculator multiplies the energy consumption by the applicable rate structure to calculate the total cost.

  6. Analyze the results: Review the calculated energy cost and consider ways to optimize energy usage or explore energy-saving measures to reduce costs.

Please note that while an energy cost calculator can provide an estimate, it may not reflect the exact amount on your actual energy bill due to factors such as seasonal variations, rate changes, or other surcharges. To obtain accurate energy cost calculations, refer to your energy provider's official website or contact them directly for complete and precise billing information.

Energy consumption calculation

The energy E in kilowatt-hours (kWh) per day is equal to the power P in watts (W) times number of usage hours per day t divided by 1000 watts per kilowatt:

E(kWh/day) = P(W) × t(h/day) / 1000(W/kW)

Energy cost calculation

The energy cost per day in dollars is equal to the energy consumption E in kWh per day times the energy cost of 1 kWh in cents/kWh divided by 100 cents per dollar:

Cost($/day) = E(kWh/day) × Cost(cent/kWh) / 100(cent/$)

Energy cost calculator Example

To calculate the cost of energy usage, you need to know the energy consumption in kilowatt-hours (kWh) and the cost per kilowatt-hour. Here's an example that demonstrates the calculation:

Let's assume you have an appliance with an energy consumption of 100 kWh, and the cost per kilowatt-hour is $0.15.

Energy cost = Consumption (kWh) × Rate ($/kWh) = 100 kWh × $0.15/kWh = $15

Therefore, the cost of energy usage for the given appliance, with an energy consumption of 100 kWh and a cost per kilowatt-hour of $0.15, would be $15.

Remember, actual energy bills may have additional components such as fixed charges, taxes, or surcharges imposed by the utility company or government. This example provides a simplified calculation based on the consumption and rate per unit. For accurate and detailed information, it's best to refer to your actual energy bill provided by the utility company.