Free calculator
Electricity Cost Calculator
Free Electricity Cost Calculator with instant browser-based results and a clear calculation breakdown.
⚡ Electricity Cost Calculator
Calculate the cost of running your electrical appliances based on power consumption, usage time, and electricity rate.
Watts (W)
Hours per day
Days
Currency per kWh (e.g., $/kWh)
Total Electricity Cost
Energy Consumption: kWh
Daily Cost:
Monthly Cost (30 days):
Annual Cost (365 days):
Daily Cost:
Monthly Cost (30 days):
Annual Cost (365 days):
Formula:
Energy (kWh) = (Power in Watts ÷ 1000) × Hours × Days
Cost = Energy (kWh) × Rate per kWh
Energy (kWh) = (Power in Watts ÷ 1000) × Hours × Days
Cost = Energy (kWh) × Rate per kWh
Want to understand the calculation?
Read the guideSee examples, formula notes and limitations.