Apparent Power Converter

Complete Apparent Power Calculator & Converter

Working with electrical systems means understanding apparent power - the total power that flows through your circuits, measured in volt-amperes (VA). Whether you are sizing a generator, selecting a transformer, or analyzing power quality, this all-in-one tool gives you everything you need to work with apparent power calculations.

Unit Converter

Quickly convert between seven different apparent power units. Enter a value in any unit and instantly see the equivalent in all others:

• Microvolt-Ampere (µVA) - For tiny electronic circuits and sensors
• Millivolt-Ampere (mVA) - Common in low-power electronics
• Volt-Ampere (VA) - The standard base unit for apparent power
• Kilovolt-Ampere (kVA) - Used for home appliances and small equipment
• Megavolt-Ampere (MVA) - For industrial machinery and substations
• Gigavolt-Ampere (GVA) - Large power plants and grid systems
• Teravolt-Ampere (TVA) - National power grid capacities

Power Triangle Calculator

The power triangle shows how apparent power (S), real power (P), and reactive power (Q) relate to each other through the formula S² = P² + Q². This calculator lets you find any unknown value when you know two others:

• Enter apparent power and power factor to find real and reactive power
• Enter real and reactive power to calculate apparent power
• See the phase angle and whether your load is leading or lagging
• Visual triangle diagram helps you understand the relationships

Voltage-Current Calculator

Calculate apparent power directly from voltage and current measurements, or find the missing value when you know the other two. Supports both single-phase and three-phase systems:

• Single-phase: S = V × I (simple multiplication)
• Three-phase line values: S = √3 × V × I (for line-to-line measurements)
• Three-phase phase values: S = 3 × V × I (for phase measurements)

Power Factor Correction

Poor power factor wastes energy and increases your electricity bills. This calculator shows you exactly what size capacitor bank you need to improve your power factor:

• Enter your current real power and power factor
• Set your target power factor (typically 0.95 or higher)
• Get the required capacitor size in VAR and kVAR
• See how much apparent power you will save

Batch Conversion

Need to convert multiple values at once? Paste a list of numbers separated by commas, semicolons, or new lines. Each value converts to all available units instantly - perfect for spreadsheet data or equipment lists.

Reference Values

Not sure what typical apparent power ratings look like? Browse our reference table showing common equipment from LED bulbs to power transformers. Click any value to use it directly in the converter.

Who Uses This Tool?

• Electrical engineers designing power systems and equipment
• Electricians sizing cables, breakers, and transformers
• Facility managers planning generator and UPS capacity
• Students learning about AC power and electrical theory
• Homeowners understanding their electrical system capacity

All calculations happen instantly in your browser with no data sent to any server. Enable live conversion mode for real-time results as you type, or load sample values to explore how each calculator works.