How to use this converter

Enter value, from, to.
Select Calculate to view the result.
Check the method and assumptions below before using the result.

Input reference and sample values

Use the units and choices shown for each field. Sample values are provided for practice, not as recommendations.

Input	Format and units	Sample
Value	Numeric value. Zero or positive.	`1`
From	Choose W / kW / MW / mW.	`kW`
To	Choose W / kW / MW / mW.	`W`

Result for these sample inputs

1000 W

Conversion factor: 1000

Select Try the example in the form to load these values and calculate them again. This replaces the current form inputs. Compare the result with the method and worked explanation below.

The method, explained

Convert to the base unit, then divide by the target factor. One kilowatt is 1,000 watts; one megawatt is 1,000,000 watts; one milliwatt is 0.001 watt.

A WORKED EXAMPLE

1 kW = 1,000 W; 500 mW = 0.5 W.

What to keep in mind

Power is a rate of energy transfer. A power value alone does not determine energy consumed.

Common questions

Is kW the same as kWh?

No. kW is power, while kWh is energy accumulated over time.

Does this estimate an electricity bill?

No. Billing also needs operating duration, actual load and a tariff.

Methodology maintained by ClarityKit. How these tools are built and checked.

Power Converter

Choose units and a value