Joules to Kilowatts Converter
How to Convert Joules (J) to Kilowatts (kW)
Curious about how energy in joules translates to power in kilowatts? Let's break it down!
J to kW Calculation Formula
The power P in kilowatts (kW) is equal to the energy E in joules (J) divided by the time t in seconds (s) and then divided by 1,000:
P(kW) = E(J) / (t(s) × 1,000)Example Calculation
If you have an energy measurement of 10,000 J and the time is 5 seconds, the calculation would be:
P(kW) = 10,000 J / (5 s × 1,000) = 2 kWFormulas for Conversion
1. DC Circuit
Power (W) = Current (A) × Voltage (V)2. Single-Phase AC Circuit
Power (W) = Voltage (V) × Current (A) × Power Factor (PF)3. Three-Phase AC Circuit
Line-to-Line (L-L):
Power (W) = 3 × Voltage (V) × Current (A) × PFLine-to-Neutral (L-N):
Power (W) = 3 × Voltage (V) × Current (A) × PFEnergy (J)
Joules (J) represent the total energy consumed or produced. It is the product of power and time.
Time (s)
Time (seconds) is the duration for which the energy is applied. It is a crucial factor in determining the power output.
Power (kW)
Kilowatts (kW) represent the rate of energy transfer or conversion, indicating how much energy is used per unit of time.
For more information on joules and their applications, visit the Britannica page on Joules.
Joules to Kilowatts Conversion Table
Formula: kW = J / (1,000 × Time in seconds)
| Joules [J] | Kilowatts at 1s | Kilowatts at 2s | Kilowatts at 3s | Kilowatts at 4s |
|---|---|---|---|---|
| 1000 J | 1 kW | 0.5 kW | 0.33 kW | 0.25 kW |
| 2000 J | 2 kW | 1 kW | 0.67 kW | 0.5 kW |
| 3000 J | 3 kW | 1.5 kW | 1 kW | 0.75 kW |
| 4000 J | 4 kW | 2 kW | 1.33 kW | 1 kW |
| 5000 J | 5 kW | 2.5 kW | 1.67 kW | 1.25 kW |
| 10000 J | 10 kW | 5 kW | 3.33 kW | 2.5 kW |
| 20000 J | 20 kW | 10 kW | 6.67 kW | 5 kW |
