Electricity Cost Calculator
Estimate your power bill from device wattage, daily usage hours, and electricity rate
About this calculator
Estimate electricity cost for any appliance. Enter wattage, daily usage hours, and your electricity rate to see daily, monthly, and yearly energy consumption and cost. Great for budgeting and comparing appliance efficiency.
How to use the Electricity Cost Calculator calculator
- Enter your values into the input fields.
- Read the result — it updates instantly as you type.
- Adjust the inputs to compare scenarios.
- Copy the page URL to share the exact calculation.
Common examples
- 100W light bulb, 8 hrs/day, $0.12/kWh → $2.88/month
- 1500W space heater, 6 hrs/day → $8.10/month at $0.12/kWh
- 60W laptop, 10 hrs/day → $2.16/month at $0.12/kWh
- 200W TV, 5 hrs/day → $3.60/month at $0.12/kWh
- 2000W oven, 1 hr/day → $7.20/month at $0.12/kWh
Frequently asked questions
How does the Electricity Cost Calculator calculator work?
Enter your numbers and the calculator applies the standard formula for this everyday task, showing the result and how it was reached. It handles the unit and rounding details so you do not have to.
When would I use the Electricity Cost Calculator calculator?
Whenever this comes up in daily life — planning, shopping, home projects, travel or work — and you want a quick, dependable answer instead of estimating or working it out by hand.
How accurate are the results?
The math runs at full precision internally and only the displayed value is rounded for readability. For real-world use the practical limit is the accuracy of the numbers you enter, not the calculation.
Can I share a specific calculation with someone else?
Yes. Every value you enter updates the URL, so copying the address bar and sharing the link reopens the exact same calculation for whoever clicks it.