⚡ Power Converter
Convert between Watts, Kilowatts, Horsepower, BTU/hr, Megawatts and more — instantly and accurately.
Conversion Results
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How to Use the Power Converter
- Enter a value — Type the numeric power figure you want to convert in the input field (e.g., 1500).
- Choose the source unit — Select the unit your value is currently in, such as Watts or Horsepower.
- Choose the target unit — Select what you want to convert to, such as Kilowatts or BTU/hr.
- Click Convert — Hit the Convert Power button or press Enter to instantly calculate.
- Read all results — The table shows your value converted across every available unit simultaneously, with your target unit highlighted.
Key Features
10 Power Units
Supports Watts, kW, MW, GW, mW, HP (mechanical & metric), BTU/hr, kcal/hr, and ft·lb/s in one tool.
Full Results Table
Every conversion is displayed simultaneously — no need to run multiple calculations one by one.
High Precision
Results use 6 significant figures based on internationally accepted SI conversion factors.
Mobile Friendly
Fully responsive design works seamlessly on smartphones, tablets, and desktop screens.
Instant Results
No page reload. Results appear immediately, making repetitive conversions fast and efficient.
No Data Stored
All calculations happen locally in your browser. Nothing is sent to any server.
Power Conversion Formula & How It Works
All power conversions use a single base unit — the Watt (W), the SI standard unit of power. Every value is first converted to Watts, then from Watts to the target unit using a fixed multiplier.
Example: converting 5 Horsepower to Kilowatts:
Conversion factors used (relative to Watts):
Practical Power Conversion Examples
What Is a Power Converter?
Power is the rate at which energy is transferred or work is done. The SI unit is the Watt (W), named after Scottish engineer James Watt. In different industries and countries, power is expressed differently — electrical engineers use kilowatts, automotive engineers use horsepower, HVAC technicians use BTU/hr, and physicists use watts. A power converter bridges these units so you can compare, calculate, and communicate across disciplines without manual arithmetic.
In India, power usage is central to everyday decisions — from sizing a home UPS and comparing AC tonnage to calculating solar panel output or engine specifications for industrial machinery. For engineering students, converting between HP, kW, and watts is essential in exams, lab work, and real projects alike.
Internationally, power units vary by region: European car specs use PS (metric horsepower), US appliances often list BTU/hr for heating and cooling, and heavy industry globally measures output in Megawatts. This free tool handles all standard units with engineering-grade precision.
Power Converter in Multiple Languages
Want a deeper guide on power units, conversion tips, and real-world applications?
Read the Full Power Conversion Guide →Frequently Asked Questions
Is this power converter tool free to use?
Yes, the power converter on StoreDropship is completely free to use with no registration or account required. There are no limits on how many conversions you can run.
How many watts is 1 horsepower?
1 mechanical horsepower (HP) equals exactly 745.69987 watts. This is the standard used in the US and UK. Metric horsepower (PS), used widely in Europe, equals 735.49875 watts — about 1.4% less.
How do I convert kilowatts to watts?
Multiply the kilowatt value by 1000. For example, 5 kW = 5000 W. To go the other direction, divide watts by 1000 to get kilowatts.
What is the difference between kW and kVA?
kW (kilowatt) measures real power — the actual useful work done by electrical equipment. kVA (kilovolt-ampere) measures apparent power, which includes reactive power in AC circuits. They are related by the power factor: kW = kVA × Power Factor.
How many watts is 1 BTU per hour?
1 BTU/hour equals approximately 0.29307 watts. So a 12,000 BTU/hr air conditioner consumes about 3,517 watts (3.52 kW) of electrical power.
What is a megawatt used for?
Megawatts (MW) are used to measure the output of power plants, large data centres, and heavy industrial equipment. 1 MW equals 1,000,000 watts or 1,000 kilowatts — enough to power hundreds of average Indian homes simultaneously.
Can I convert metric horsepower and mechanical horsepower?
Yes. This tool supports both. Metric horsepower (PS, used in European automotive specs) equals 735.499 W, while mechanical (imperial) horsepower equals 745.7 W. Always check which standard applies to your use case before comparing engine ratings.
What power unit is used in India for electricity bills?
Electricity in India is billed in kilowatt-hours (kWh), which is a unit of energy (not power). Power is measured in kilowatts (kW). Your appliance's kW rating, multiplied by hours of use, gives the kWh consumed — which appears on your DISCOM bill.
How accurate are the conversion results?
All conversions use internationally accepted standard factors defined by SI and NIST, accurate to 6 significant figures — suitable for engineering calculations, academic work, and technical documentation.
Is there a mobile version of this tool?
Yes, the power converter is fully responsive and works on all screen sizes from 320px upward, including smartphones and tablets. No app download is required.
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