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# Appliance Bill Calculator

It is very essential for the consumers to have understanding of electricity bill calculation. We have made it quite easy for you to calculate electrical charges at residential level.

Cost per unit (cents/kWh)

Appliance
Watts
Quantity
Hours/Day
kWh
Cost (USD)
/ Day
/ Month
Total kWh Consumption
kWh
Total Electricity Cost per day
\$
Total Electricity Cost per month
\$

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## Why is electricity bill calculator required?

Electricity Bill Calculator gives us a picture of energy consumption and monthly electrical expsenses which ultimately leads to better utilization of electricity.

## What is Power Rating?

Power rating is the rating expressing the maximum power which can be safely and continuously handled by a device. Power rating is represented in terms of Watts (W).

Common residential loads and their power ratings:

 Appliances Power rating (W) Fridge 100, 250, 200, 250, 550 Iron 800 to 2000 AC 900, 1200, 1500, 2000, 3500 TV 17, 20 to 60, 130, 150, 295 Washing Machine 500, 900 Printer 20 to 30, 600 to 800 Incandescent Light 60 to 100 LED Light 7 to 10 Fans 45 to 80 W Computer 200

## Steps for Electricity Bill Calculator:

### Energy consumption by each load

First, we need to calculate the energy consumed by each load by using the formula given below

energy consumption(Wh) = power * quantity * time of use

### Electricity cost

Then calculate the total energy cost by using these formulas

electricity cost(per day) =
(Σ energy consumption)*cost per unit / 1000
electricity cost(per month) = electricity cost(per day) * 30

Where,

Σ energy consumption = Sum of energy consumption for each load

1 Unit = 1 Kilowatt-hour (KWh)

### Solved Example:

Let us consider the following data provided by user:

 Equipment Power (Watts) Quantity Time of use (hour) Time of use (minutes) Saver 18 6 18 30 Fans 60 3 12 00 Fridge 120 1 9 00

Cost per unit=\$2 per unit

### SOLUTION

#### Step 1: energy consumption by each load

energy consumption = 18 * 6 * ( 18 +
30 / 60
) = 1998 wh

energy consumption = 60 * 3 * ( 12 +
00 / 60
) = 2160 wh

energy consumption = 120 * 1 * ( 9 +
00 / 60
) = 1080 wh

#### Step 2: Electricity Cost

electricity cost(per day) =
(1998 + 2160 + 1080) * 2 / 1000
= \$10.476

electricity cost(per month) = \$10.476 * 30 = \$314.28