Electricity Bill Calculator
Calculate the cost of running an electrical appliance based on its power, daily usage, and your electricity rate.
Enter values and click Calculate
Estimate Your Monthly Electricity Bill Based on Appliance Usage
This calculator estimates monthly, daily, and yearly costs for an appliance. Enter the wattage, hours used per day, days per month, and your local electricity rate per kWh. It computes total kWh consumption and cost.
Formula
kWh = (Watts / 1000) × Hours × Days; Cost = kWh × Rate
How to Use?
- Enter the appliance power in watts.
- Enter average daily usage hours and number of days per month.
- Enter your electricity rate per kWh.
- View monthly usage, monthly cost, daily cost, and yearly cost.
Worked Examples
Example
Given:inputs
applianceWatts:150
hoursPerDay:24
daysPerMonth:30
electricityRate:0.12
Result:calculated
kwhPerMonth:108
monthlyCost:12.96
Understanding kWh
1 kWh = 1000 watts used for 1 hour. Electricity bills are based on kWh consumed.
Rate Variations
Electricity rates vary by region and time of use; check your bill for accurate rate.
Table: Example Electricity Costs
| Appliance | Power | Hours/day | Days | kWh/month | Cost/month |
|---|---|---|---|---|---|
| Refrigerator | 150 W | 24 | 30 | 108 | $12.96 |
| LED TV | 100 W | 5 | 30 | 15 | $1.80 |
FAQs
What if I use an appliance only part of the month?
Adjust the "Days Per Month" to the actual number of days used.
Does this include taxes and fees?
No, it calculates only the energy cost based on your rate.