Power Converter
Convert rates of energy transfer across electrical, mechanical, heating, and cooling labels. The converter uses watts as the common route so horsepower, Btu per hour, kilowatts, megawatts, and work-rate units can be compared directly.
Base unit
watt
Supported units
7
Includes
hp + Btu/h
Live converter
Power conversion inputs
Convert rates of energy transfer across watts, kilowatts, megawatts, mechanical horsepower, Btu per hour, foot-pounds per second, and calories per second.
Converted result
745.6998715823 W
Input
1 hp
Output unit
W
Base method
watts
Power in every supported unit
| Unit | Converted value | Unit name | Note |
|---|---|---|---|
| W | 745.6998715823 | Watts | SI derived unit of power. |
| kW | 0.7456998716 | Kilowatts | 1,000 watts. |
| MW | 0.0007456999 | Megawatts | 1,000,000 watts. |
| hp | 1 | Mechanical horsepower | Mechanical horsepower. |
| Btu/h | 2,544.433577644 | Btu per hour | Heating and cooling rate. |
| ft lbf/s | 550 | Foot-pounds per second | Mechanical work rate. |
| cal/s | 178.2265467453 | Calories per second | Heat-rate unit. |
Convert equipment power, heat rate, and mechanical output
Electrical ratings
Convert watts, kilowatts, and megawatts for equipment, generator, and utility notes.
Mechanical output
Translate mechanical horsepower and foot-pounds per second into watts.
Heating and cooling
Compare Btu per hour with watt-based power values for HVAC references.
Power conversion formula
The converter normalizes each source value into watts, then divides by the watt factor for the target unit.
Working formulas
Base conversion
watts = value x watts per source unit
Watts provide the common route for electrical, mechanical, and thermal power units.
Target value
target value = watts / watts per target unit
The watt value is scaled into the selected target unit.
Mechanical horsepower
1 hp = 745.6998715822702 W
Mechanical horsepower is distinct from metric horsepower and electrical horsepower.
Symbols
- W - watt
- SI derived unit of power, equal to one joule per second.
- hp - mechanical horsepower
- A common mechanical output rating.
Why watt-based conversion is clearer
Keeps power separate from energy
- Watts measure a rate, while joules and kWh measure energy.
- The table helps compare ratings without accidentally treating kW and kWh as the same thing.
- Mechanical and thermal power labels are normalized through one SI route.
Practical equipment checks
- Horsepower, Btu/h, and kilowatt ratings can be compared in one table.
- The formula block identifies mechanical horsepower specifically.
- Large power ratings remain readable for generators, motors, and building systems.
Useful for electrical and mechanical ratings
Electrical planning
Convert device, generator, and load ratings between W, kW, and MW.
Mechanical work
Compare horsepower and foot-pounds per second with watt-based ratings.
HVAC references
Translate Btu per hour into watts when heating and cooling data meets SI notes.
How it works in three quick steps.
Enter the power rating
Type a value from equipment specs, HVAC notes, electrical ratings, or mechanics examples.
Select source and target units
Choose watts, kilowatts, megawatts, mechanical horsepower, Btu per hour, foot-pounds per second, or calories per second.
Compare the watt table
Use the table to see how electrical, mechanical, and heating/cooling power labels relate.
Save power conversions
Copy labeled results
Copy the selected conversion with source and target unit labels for recipes, vehicle notes, utility comparisons, or homework.
Print the comparison table
Print the full table when repeated conversions need to stay visible at a counter, desk, shop, lab, or classroom.
Keep the method nearby
Use the formula notes to confirm whether the converter used milliliters, km/L, joules, or watts as the base route.
About this power converter
Power conversions are often confused with energy conversions because labels such as kW and kWh look similar. A watt is a rate of energy transfer, while a kilowatt-hour is an amount of energy accumulated over time. This page keeps those ideas separate by focusing only on power units.
The converter uses watts as the base route for electrical units, mechanical horsepower, foot-pounds per second, calories per second, and Btu per hour. That makes it useful for comparing equipment specifications, motor ratings, generator loads, and HVAC notes without manually rebuilding the factor chain every time.
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