Overview
Convert between watts, kilowatts, megawatts and horsepower.
Objective
Use the correct measurements, units and method to produce an accurate, clearly labelled result.
What You Need
- A power rating
- Starting and target units
- Conversion factor
- Calculator if needed
Before You Start
Write down the value or dimensions you have, including their units. Decide exactly what unit or result you need before calculating. Keeping the units visible makes errors much easier to spot.
How to Do It
- Identify the power units.
- Choose the correct conversion factor.
- Multiply or divide.
- Round appropriately for the purpose.
- Write the target unit.
Worked Example
Convert 2.4 kW to watts. 1 kW = 1000 W, so 2.4 kW = 2400 W.
Useful Tips
- 1000 W = 1 kW.
- Do not confuse power in kW with energy in kWh.
- Horsepower conversions may be approximate depending on the standard.
Common Mistakes
- Treating kW and kWh as the same thing.
- Using 100 instead of 1000.
- Not checking which horsepower definition is intended.
Important Notes
Conversion factors and measurement standards can vary by country or context. When accuracy matters, confirm the standard being used and keep enough decimal places until the final answer.
FAQ
When should I round the answer?
Keep the full value during the calculation and round at the end to a level of precision suitable for the task.
Why should I always write the units?
The unit tells you what the number represents and helps reveal mistakes when converting or calculating.