Calculate electricity consumption in kilowatt-hours and total cost. Enter wattage, hours of use per day, and your electricity rate.
$33.60 total cost
| Daily Consumption | 8.000 kWh/day |
| Total over 30 days | 240.00 kWh |
| Daily Cost | $1.120 |
| Total Cost | $33.60 |
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kWh = (Watts × Hours/day) ÷ 1000
Cost = kWh × Rate ($/kWh)
A kWh is a unit of energy equal to using 1,000 watts for 1 hour. It's what your electric meter measures and what your utility charges per unit.
kWh = (Watts × Hours per day) ÷ 1000. Then multiply by days for total consumption.
The US average is about $0.13–0.17 per kWh as of 2024. Rates vary by state from $0.09 (Louisiana) to $0.29+ (Hawaii).
The average US home uses about 886 kWh per month (about 29 kWh/day) according to the EIA.
Calculations are for educational purposes only. Consult a qualified financial advisor for personalized advice.