---
title: "kVA Calculator | Apparent Power Electrical Tool | XTRAW Tools"
description: "Calculate kilovolt-amps from kilowatts and power factor with a free browser-based kVA calculator."
url: "https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/kva-calculator"
date: "2026-05-20T21:55:59+00:00"
language: "en-GB"
---

[Wire Size Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/wire-size-calculator)[Capacitor Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/capacitor-calculator)

 [![kVA Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/xtraw-kva-calculator-360x360.jpg)](https://xtraw.com/images/virtuemart/product/xtraw-kva-calculator-360x360.jpg "kVA Calculator from XTRAW Tools")

  new

 [Back to: Electrical & Engineering Calculators](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators "Electrical & Engineering Calculators")

# kVA Calculator

 Calculate kilovolt-amps from kilowatts and power factor. Use this free browser-based kva calculator from XTRAW Tools.

 **kVA Calculator** helps you calculate kilovolt-amps from kilowatts and power factor. Use this free browser-based calculator from XTRAW Tools to compare inputs, estimate results, and plan your next step.

## How to Use the kVA Calculator

1. Enter the required calculator inputs shown in the form.
2. Review the measurements, electrical values, grades, weights, rates, or reading assumptions.
3. Run the calculator, then adjust one input at a time to compare scenarios or check your work.

## What This Calculator Helps With

Calculate kilovolt-amps from kilowatts and power factor. It is designed for engineers, electricians, students, generator shoppers, and electrical planners who want a fast, browser-based estimate before relying on a contractor, electrician, engineer, code authority, teacher, advisor, or professional source.

- Watts: 10 kW
- Power Factor: 0.8

## Common Uses

People use this calculator when they need a quick way to estimate construction materials, electrical values, solar sizing, school grades, GPA, or reading time from real inputs.

- **Measurement:** Use measurements, grades, electrical values, or reading values to get a clear result.
- **Math Solving:** Apply formulas to solve grade, physics, electrical, or school-related calculations.
- **Project Planning:** Compare project assumptions, academic goals, energy plans, or electrical scenarios.

## Formula or Method

kVA = kW / Power Factor; kVAR = √(kVA² - kW²).

## Example

**Example inputs:** Watts: 10 kW; Power Factor: 0.8

**Example result:** Using the default inputs, apparent power is 12.50 kVA.

## Related Tools

- [Watts To Amps Calculator](https://xtraw.com/tools/watts-to-amps-calculator)
- [Ohm's Law Calculator](https://xtraw.com/tools/ohms-law-calculator)
- [Voltage Drop Calculator](https://xtraw.com/tools/voltage-drop-calculator)
- [Wire Size Calculator](https://xtraw.com/tools/wire-size-calculator)
- [Electricity Cost Calculator](https://xtraw.com/tools/electricity-cost-calculator)
- [kW to kWh Calculator](https://xtraw.com/tools/kw-to-kwh-calculator)

## kVA Calculator FAQ

### Is the kVA Calculator free?

Yes. This calculator is free to use on XTRAW Tools.

### Do I need to create an account?

No. XTRAW tools are designed for browser-based use without requiring an account.

### Are the results exact?

Results may be estimates depending on the inputs, formula, rounding, assumptions, and purpose of the calculator. Always verify important results before relying on them.

**Disclaimer:** This calculator is provided for general informational, educational, and convenience purposes only. It is not legal, financial, medical, tax, engineering, electrical, construction, solar, academic, safety, or professional advice. Always verify important results with a qualified professional, instructor, code authority, manufacturer documentation, or authoritative source before making decisions.

**Related Products** ![Tooltip]()

[![Watts to Amps Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-watts-to-amps-calculator-360x360_230x230.jpg) Watts to Amps Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/watts-to-amps-calculator "Watts to Amps Calculator")

Convert watts to amps and estimate current from voltage and power factor. Use this free browser-based watts to amps calculator from XTRAW Tools.

Custom prototype for related products

[![Ohm's Law Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-ohms-law-calculator-360x360_230x230.jpg) Ohm's Law Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/ohms-law-calculator "Ohm's Law Calculator")

Calculate voltage, current, resistance, or power using Ohm's law. Use this free browser-based ohm's law calculator from XTRAW Tools.

Custom prototype for related products

[![Voltage Drop Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-voltage-drop-calculator-360x360_230x230.jpg) Voltage Drop Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/voltage-drop-calculator "Voltage Drop Calculator")

Calculate voltage drop in electrical wiring. Use this free browser-based voltage drop calculator from XTRAW Tools.

Custom prototype for related products

[![Wire Size Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-wire-size-calculator-360x360_230x230.jpg) Wire Size Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/wire-size-calculator "Wire Size Calculator")

Determine a wire gauge estimate from current, distance, voltage, and voltage drop limit. Use this free browser-based wire size calculator from XTRAW Tools.

Custom prototype for related products

[![Electricity Cost Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-electricity-cost-calculator-360x360_230x230.jpg) Electricity Cost Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/electricity-cost-calculator "Electricity Cost Calculator")

Calculate the cost of running an appliance from watts, runtime, days, and rate. Use this free browser-based electricity cost calculator from XTRAW Tools.

Custom prototype for related products

[![kW to kWh Calculator from XTRAW Tools](https://xtraw.com/images/virtuemart/product/resized/xtraw-kw-to-kwh-calculator-360x360_230x230.jpg) kW to kWh Calculator](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/kw-to-kwh-calculator "kW to kWh Calculator")

Convert kilowatts to kilowatt-hours and estimate energy cost. Use this free browser-based kw to kwh calculator from XTRAW Tools.

Custom prototype for related products

 **Related Categories** ![Tooltip]()[![Science Calculators category image](https://xtraw.com/images/virtuemart/category/26_science_calculators.jpg) Science Calculators](https://xtraw.com/calculators/science-calculators "Science Calculators")

Custom prototype for related categories

[![Electrical & Engineering Calculators category image](https://xtraw.com/images/virtuemart/category/170_electrical-engineering-calculators.jpg) Electrical & Engineering Calculators](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators "Electrical & Engineering Calculators")

Custom prototype for related categories

[![Electrical Calculators category image](https://xtraw.com/images/virtuemart/category/171_electrical-calculators.jpg) Electrical Calculators](https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/electrical-calculators "Electrical Calculators")

Custom prototype for related categories

[![Engineering Calculators category image](https://xtraw.com/images/virtuemart/category/157_engineering-calculators.jpg) Engineering Calculators](https://xtraw.com/calculators/science-calculators/engineering-calculators "Engineering Calculators")

Custom prototype for related categories

[![Energy Calculators category image](https://xtraw.com/images/virtuemart/category/173_energy-calculators.jpg) Energy Calculators](https://xtraw.com/calculators/science-calculators/energy-calculators "Energy Calculators")

Custom prototype for related categories

## Schema

```json
{
    "@context": "https://schema.org",
    "@type": "BreadcrumbList",
    "itemListElement": [
        {
            "@type": "ListItem",
            "position": 1,
            "name": "Home",
            "item": "https://xtraw.com"
        },
        {
            "@type": "ListItem",
            "position": 2,
            "name": "Calculators",
            "item": "https://xtraw.com/calculators"
        },
        {
            "@type": "ListItem",
            "position": 3,
            "name": "Science Calculators",
            "item": "https://xtraw.com/calculators/science-calculators"
        },
        {
            "@type": "ListItem",
            "position": 4,
            "name": "Electrical & Engineering Calculators",
            "item": "https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators"
        },
        {
            "@type": "ListItem",
            "position": 5,
            "name": "kVA Calculator",
            "item": "https://xtraw.com/calculators/science-calculators/electrical-engineering-calculators/kva-calculator"
        }
    ]
}
```