⚡ Energy Management
Appliance Energy Usage Calculator
Calculate energy consumption and cost for household and office appliances.
📊 Base Appliance
Appliance Name
Power Rating
W
Daily Usage
h
Hours used per day
Days Per Week
💰 Cost Settings
Electricity Rate
$ /kWh
Additional Appliances
Energy 0
Total Monthly Energy
0 kWh
all appliances
Daily Energy 0 kWh
Monthly Energy 0 kWh
Daily Cost $0
Monthly Cost $0

📊 Energy Breakdown

Appliance Power (W) Daily (kWh) Monthly (kWh) Cost ($)

How the formula works

Daily Energy (kWh) = Power (W) × Hours ÷ 1000  |  Monthly Energy = Daily × 30.4
  • Power Rating = Appliance wattage (W)
  • Daily Usage = Hours used per day
  • Daily Energy = Power × Hours ÷ 1000 (kWh)
  • Monthly Energy = Daily Energy × 30.4 (avg days/month)
  • Cost = Energy × Electricity Rate
  • Standby Power = Many appliances consume power even when off
  • Energy Star = More efficient appliances use less energy