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The horsepower to kilowatts conversion is a fundamental unit conversion used in engineering, automotive, and electrical applications to convert mechanical power (horsepower) to electrical power (kilowatts) using the standard conversion factor.
The calculator uses the standard conversion formula:
Where:
Explanation: This conversion factor is derived from the definition of 1 horsepower being equal to approximately 745.7 watts, and since 1 kilowatt equals 1000 watts, the conversion factor becomes 0.7457.
Details: Accurate power unit conversion is essential for engineering calculations, electrical system design, automotive specifications, and international standardization of power measurements across different industries and regions.
Tips: Enter horsepower value in the input field. The value must be a positive number. The calculator will automatically convert it to kilowatts using the standard conversion factor.
Q1: What is the exact conversion factor?
A: The exact conversion factor is 0.745699872, which is typically rounded to 0.7457 for most practical applications.
Q2: Are there different types of horsepower?
A: Yes, there are mechanical horsepower (hp(I)), metric horsepower (PS), and electrical horsepower. This calculator uses mechanical horsepower (1 hp = 745.7 W).
Q3: Why convert horsepower to kilowatts?
A: Kilowatts are the SI unit for power and are used internationally, while horsepower is more common in automotive and mechanical engineering contexts in certain countries.
Q4: How accurate is this conversion?
A: The conversion is mathematically exact based on the defined relationship between horsepower and watts in the International System of Units.
Q5: Can I convert kilowatts back to horsepower?
A: Yes, to convert kilowatts to horsepower, divide the kilowatt value by 0.7457 (or multiply by approximately 1.341).