kW to kWh Converter
Calculate energy consumption from power and time
kW to kWh Converter
Calculate energy consumption from power and time
Common Appliances
About kW and kWh
kW (kilowatt) is a unit of power representing the rate at which energy is consumed or produced at any given moment.
kWh (kilowatt-hour) is a unit of energy representing the total amount of energy consumed over time.
Think of power as speed and energy as distance traveled. A 2kW appliance running for 3 hours consumes 6kWh of energy.
Key Formulas
Energy Saving Tips
• Turn off appliances when not in use
• Use LED bulbs instead of incandescent
• Unplug chargers after charging
• Use energy-efficient appliances
• Monitor your energy consumption
Understanding kW vs kWh
Kilowatt (kW) - Power
Power measures the rate of energy consumption. A 2kW appliance uses 2000 watts of power at any instant. It's like the speed of a car.
Kilowatt-hour (kWh) - Energy
Energy is power consumed over time. If a 2kW appliance runs for 3 hours, it consumes 6kWh. It's like the distance traveled.
The Relationship
kWh = kW × hours. Your electricity bill charges you for kWh, not kW, because you pay for total energy consumed, not the rate.
Common Appliance Power Ratings
Air Conditioner
1.5-3.5 kW typical power consumption
Electric Oven
2-5 kW when heating
Washing Machine
0.5-2 kW during operation
Desktop Computer
0.1-0.3 kW typical usage
Energy Consumption Examples
| Appliance | Power (kW) | Usage Time | Energy (kWh) |
|---|---|---|---|
| LED Light Bulb | 0.01 kW | 10 hours | 0.1 kWh |
| Laptop | 0.05 kW | 8 hours | 0.4 kWh |
| Microwave | 1.2 kW | 0.5 hours | 0.6 kWh |
| Electric Water Heater | 3 kW | 2 hours | 6 kWh |
| Air Conditioner | 2.5 kW | 8 hours | 20 kWh |
How to Use This Calculator
Choose Conversion Type
Select whether you want to calculate energy from power and time (kW to kWh) or power from energy and time (kWh to kW).
Enter Values
Input the power rating and time period. Optionally add electricity cost to calculate expenses.
Get Results
View detailed energy consumption, equivalent values, and cost estimates for your appliances.
Common Appliances
About
Calculate energy consumption (kWh) from power (kW) and time. Understand your electricity usage and costs.
Tips
• kWh is what appears on your electric bill
• Higher kW = faster energy consumption
• Reduce usage time to save energy