kW to Volt Calculator
Convert real power in kilowatts (kW) to voltage in volts (V).
Kilowatt to Volt Converter
Common kW to Volt Conversions
Click on these links to see instant conversions with common values:
Understanding kW to Volt Conversion
Converting kilowatts (kW) to volts (V) requires knowing the current (Amps) and, for AC circuits, the power factor. Volts represent the electrical potential difference.
Conversion Formulas
For DC Circuits:
Volts (V) = (kW × 1000) / Amps (I)
For AC Single-Phase Circuits:
Volts (V) = (kW × 1000) / (Amps (I) × Power Factor (PF))
For AC Three-Phase Circuits:
Volts (V) = (kW × 1000) / (√3 × Amps (I) × Power Factor (PF))
Where:
• kW = Real Power in Kilowatts
• I = Current in Amperes
• V = Voltage in Volts
• PF = Power Factor (between 0 and 1)
• √3 ≈ 1.732
Volts (V) = (kW × 1000) / Amps (I)
For AC Single-Phase Circuits:
Volts (V) = (kW × 1000) / (Amps (I) × Power Factor (PF))
For AC Three-Phase Circuits:
Volts (V) = (kW × 1000) / (√3 × Amps (I) × Power Factor (PF))
Where:
• kW = Real Power in Kilowatts
• I = Current in Amperes
• V = Voltage in Volts
• PF = Power Factor (between 0 and 1)
• √3 ≈ 1.732
Key Concepts
- Kilowatt (kW): The unit of real power.
- Ampere (A): The unit of electric current.
- Volt (V): The unit of electric potential difference.
- Power Factor (PF): The ratio of real power to apparent power in AC circuits.
Typical Power and Current Ratings for Voltage
| Device | Power (kW) | Current (A) | Approx. Voltage (V) |
|---|---|---|---|
| Small LED Light | 0.01 | 0.08 | 120 |
| Laptop Charger | 0.06 | 0.5 | 120 |
| Microwave Oven | 1 | 8.33 | 120 |
| Electric Kettle | 2 | 9.17 | 240 |
| Electric Vehicle Charger | 7.2 | 30 | 240 |
Frequently Asked Questions
What is the relationship between power, current, and voltage?
These three quantities are interconnected. Power is the product of voltage and current (and power factor for AC circuits). If you know any two, you can calculate the third.
Why is power factor important in AC circuits?
In AC circuits, power factor accounts for the phase difference between voltage and current. A low power factor means that a larger current is needed to deliver the same amount of real power (kW), leading to inefficiencies and higher electricity bills.