Electric Bill Calculator
Estimate electricity cost from wattage, hours used, and rate per kWh. Calculate daily, weekly, monthly, and annual costs for any appliance.
Frequently Asked Questions
How is electricity cost calculated?
Electricity cost = (Watts ÷ 1000) × Hours per day × Rate per kWh. This gives you the daily cost in kilowatt-hours (kWh). For example, a 100W device running 8 hours at $0.13/kWh costs $0.10 per day.
What is the average electricity rate?
The average US electricity rate is around $0.13 per kWh, though it varies widely by state from about $0.10 (Louisiana) to over $0.30 (Hawaii). In the UK it is approximately £0.24/kWh. Check your utility bill for your exact rate.
How can I reduce my electric bill?
Switch to LED bulbs (use 75% less energy than incandescent), unplug devices on standby, use a smart power strip, run appliances during off-peak hours if your utility offers time-of-use rates, and consider a smart thermostat for heating and cooling.