Power Converter
Convert between watts, kilowatts, horsepower, BTU/h and more.
What is Power Converter?
A power converter is an online tool that translates measurements of power — the rate of energy transfer or consumption — between the different units used in engineering, physics, automotive, and electrical applications. It converts between watts, kilowatts, megawatts, horsepower (mechanical and metric), BTU per hour, foot-pounds per minute, and other units. Power measurements are fundamental to understanding engines, electrical systems, heating equipment, and industrial machinery.
Power units vary by industry and region. Electrical power worldwide is measured in watts and kilowatts. Engine output in the United States is traditionally expressed in horsepower, while European markets increasingly use kilowatts for automotive ratings. HVAC and heating systems in the US use BTU per hour. Industrial motors may be rated in horsepower or kilowatts depending on the country and industry. Scientific contexts always use watts, the SI unit.
This tool is used by automotive enthusiasts comparing engine specs across markets, electrical engineers sizing equipment, HVAC technicians calculating heating loads, physics students solving power problems, and consumers comparing product specifications expressed in different power units. It covers the full range from milliwatts to gigawatts.
How to Use Power Converter
- 1Step 1: Open the Power Converter and locate the input field where you will enter the power value you want to convert between measurement units.
- 2Step 2: Enter the power value from your specification, bill, or calculation — for example, '150' for 150 horsepower, '11000' for 11,000 watts, or '5' for 5 kilowatts.
- 3Step 3: Select the unit your power value is expressed in from the dropdown menu, choosing from watts, kilowatts, horsepower, BTU/hr, metric horsepower, or other options.
- 4Step 4: Read the equivalent power values displayed instantly in all other supported units in the results panel for direct comparison and use.
- 5Step 5: Apply the converted power value to your engine comparison, electrical load calculation, HVAC design, or physics problem with confidence in its accuracy.
Benefits of Using Power Converter
- ✓Automotive Spec Comparison: Converts between mechanical horsepower (US standard) and kilowatts (European standard) for direct engine power comparison across markets and car reviews.
- ✓Electrical System Design: Converts watts to kilowatts for circuit sizing, panel capacity calculations, and understanding electricity consumption relative to appliance power ratings.
- ✓HVAC and Heating: Converts between BTU/hr and kilowatts for heating and cooling system sizing, enabling comparison between US and European equipment specifications.
- ✓Metric vs Mechanical Horsepower: Correctly distinguishes between mechanical horsepower (745.7 W) and metric horsepower (735.5 W), an important difference in precise engineering calculations.
- ✓Renewable Energy Planning: Converts between watt and kilowatt ratings for solar panels, wind turbines, and battery systems to properly size residential or commercial installations.
- ✓Educational Physics Support: Helps students understand power units and their relationships, particularly the definition of one watt as one joule per second, within a practical conversion context.
Example
About Power Converter
Power Converter translates between watts, kilowatts, megawatts, horsepower (mechanical and metric), BTU/hour, and foot-pounds per second. It's used in electrical engineering, automotive performance, and HVAC design. All power equivalents are shown at once.
- Watts, kW, MW, horsepower, BTU/hr
- Mechanical and metric horsepower
- All equivalents displayed simultaneously
- High-precision results