Watts to kVA calculator

Understanding electrical measurements is essential for managing power effectively. One common conversion is from Watts (W) to kilovolt-amperes (kVA). This guide explains how to use a Watts to kVA calculator and why it matters.

What Are Watts and kVA?

• Watts (W): Measures real power, the actual power used by devices.
• Kilovolt-amperes (kVA): Measures apparent power, combining real power and reactive power.

Why Convert Watts to kVA?

The conversion helps in assessing electrical systems where both real power (W) and apparent power (kVA) are needed. Power factors influence this relationship.

Formula for Watts to kVA

The formula depends on the power factor (PF). The power factor is a ratio between 0 and 1, representing system efficiency:

\[
\text{kVA} = \frac{\text{Watts}}{\text{Power Factor} \times 1,000}
\]

Step-by-Step Conversion

1. Determine Watts (W): Find the power consumption of the device.
2. Know the Power Factor (PF): Typically provided by manufacturers. Common values are between 0.7 and 1.0.
3. Apply the Formula: Divide Watts by the product of power factor and 1,000.

Example Calculation

• Device power: 2,000 Watts
• Power factor: 0.8

Using the formula:

\[
\text{kVA} = \frac{2,000}{0.8 \times 1,000} = 2.5
\]

The result is 2.5 kVA.

Common Conversion Table