kW to kWh Calculator
Convert power in kilowatts (kW) to energy in kilowatt-hours (kWh).
Kilowatt to Kilowatt-hour Converter
Common kW to kWh Conversions
Click on these links to see instant conversions with common values:
Understanding kW to kWh Conversion
Converting kilowatts (kW) to kilowatt-hours (kWh) involves understanding that kWh is a measure of energy consumed over a period of time, while kW is a measure of power at a given instant.
Conversion Formula
Where:
• kWh = Energy in Kilowatt-hours
• kW = Power in Kilowatts
• hours = Time duration in hours
Key Concepts
- Kilowatt (kW): A unit of power, representing the rate at which electrical energy is consumed or produced.
- Kilowatt-hour (kWh): A unit of energy, representing the consumption of one kilowatt of power over one hour. It's commonly used for billing electricity consumption.
- Power: The rate at which energy is transferred or used.
- Energy: The capacity to do work.
Typical Power Consumption and Energy Usage
| Appliance | Power (kW) | Hours Used | Approx. Energy (kWh) |
|---|---|---|---|
| LED Light Bulb | 0.01 | 10 | 0.1 |
| Laptop | 0.06 | 5 | 0.3 |
| Microwave Oven | 1 | 0.25 | 0.25 |
| Refrigerator | 0.15 | 24 | 3.6 |
| Electric Vehicle Charger | 7.2 | 4 | 28.8 |
Frequently Asked Questions
What is the difference between kW and kWh?
kW (kilowatt) is a unit of power, representing the rate of energy consumption at a specific moment. kWh (kilowatt-hour) is a unit of energy, representing the total amount of energy consumed over a period of time. Think of kW as speed and kWh as distance traveled.
Why do I need time to convert kW to kWh?
Kilowatt-hours are a measure of energy over time. To calculate the total energy consumed (kWh) from a power rating (kW), you must multiply by the duration for which that power was used (hours).