UnitsConverter

Watt to Kilowatt Converter

Convert watts to kilowatts with our free online power converter.

Quick Answer

1 Watt = 0.001 kilowatts

Formula: Watt × conversion factor = Kilowatt

Use the calculator below for instant, accurate conversions.

Our Accuracy Guarantee

All conversion formulas on UnitsConverter.io have been verified against NIST (National Institute of Standards and Technology) guidelines and international SI standards. Our calculations are accurate to 10 decimal places for standard conversions and use arbitrary precision arithmetic for astronomical units.

Last verified: November 2025Reviewed by: Sam Mathew, Software Engineer

Watt to Kilowatt Calculator

How to Use the Watt to Kilowatt Calculator:

  1. Enter the value you want to convert in the 'From' field (Watt).
  2. The converted value in Kilowatt will appear automatically in the 'To' field.
  3. Use the dropdown menus to select different units within the Power category.
  4. Click the swap button (⇌) to reverse the conversion direction.
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How to Convert Watt to Kilowatt: Step-by-Step Guide

Converting Watt to Kilowatt involves multiplying the value by a specific conversion factor, as shown in the formula below.

Formula:

kW = W × 0.001

Example Calculation:

1 W = 0.001 kW

Disclaimer: For Reference Only

These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.

Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.

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📋 Unit Symbols

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Conversion Table: Watt to Kilowatt

Watt (W)Kilowatt (kW)
0.50.001
10.001
1.50.002
20.002
50.005
100.01
250.025
500.05
1000.1
2500.25
5000.5
1,0001

People Also Ask

How do I convert Watt to Kilowatt?

To convert Watt to Kilowatt, enter the value in Watt in the calculator above. The conversion will happen automatically. Use our free online converter for instant and accurate results. You can also visit our power converter page to convert between other units in this category.

Learn more →

What is the conversion factor from Watt to Kilowatt?

The conversion factor depends on the specific relationship between Watt and Kilowatt. You can find the exact conversion formula and factor on this page. Our calculator handles all calculations automatically. See the conversion table above for common values.

Can I convert Kilowatt back to Watt?

Yes! You can easily convert Kilowatt back to Watt by using the swap button (⇌) in the calculator above, or by visiting our Kilowatt to Watt converter page. You can also explore other power conversions on our category page.

Learn more →

What are common uses for Watt and Kilowatt?

Watt and Kilowatt are both standard units used in power measurements. They are commonly used in various applications including engineering, construction, cooking, and scientific research. Browse our power converter for more conversion options.

For more power conversion questions, visit our FAQ page or explore our conversion guides.

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📚 How to Convert Units

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All Power Conversions

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Other Power Units and Conversions

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Verified Against Authority Standards

All conversion formulas have been verified against international standards and authoritative sources to ensure maximum accuracy and reliability.

NIST Reference on Constants, Units and Uncertainty

National Institute of Standards and Technology — Fundamental physical constants and unit conversions

BIPM SI Units

Bureau International des Poids et Mesures — International System of Units (SI) definitions and standards

ISO 80000

International Organization for Standardization — Quantities and units international standards series

Last verified: November 14, 2025