Convert Horsepower to Kilowatts (hp to kW)
Horsepower to Kilowatt Converter
Formula
To convert horsepower to kilowatts, multiply the power value by 0.7457.
Horsepower Definition
A unit of power originally defined as the power needed to lift 550 pounds by one foot in one second.
Introduced by James Watt in the 18th century to compare steam engines to horses.
Kilowatt Definition
A unit of power equal to 1,000 watts.
Derived from the watt, named after James Watt.
- 1Converting from Horsepower to Kilowatts is useful in many practical situations.
- 2Scientists and engineers often need to convert between Horsepower and Kilowatts for their calculations.
- 3International trade and travel often requires converting between Horsepower and Kilowatts.
| Horsepower (hp) | Kilowatt (kW) |
|---|---|
| 1 | 0.7457 |
| 5 | 3.7285 |
| 10 | 7.457 |
| 20 | 14.914 |
| 50 | 37.285 |
| 100 | 74.57 |
Converting Horsepower to Kilowatts
To convert horsepower to kilowatts, multiply the power value by 0.7457. This page provides comprehensive information about this conversion, including unit definitions, formulas, real-world examples, and frequently asked questions.
Unit Definitions
Description
Originally defined as power to lift 550 lb-ft/sec.
History
Introduced by James Watt in the 18th century to compare steam engines to horses.
System
The horsepower belongs to the imperial system of measurement.
Common Uses
- Engines
- Motors
- Machinery
Description
One thousand watts.
History
Derived from the watt, named after James Watt.
System
The kilowatt belongs to the metric system of measurement.
Common Uses
- Electric motors
- Power generation
- Electric vehicles
- Engines
- Motors
Conversion Formula
Horsepower to Kilowatt
To convert horsepower to kilowatts, multiply the power value by 0.7457.
Kilowatt to Horsepower
To convert Kilowatts to Horsepower, kW / 0.7457.
Real-World Examples
- 11 hp = 0.7457 kW
- 2100 hp = 74.57 kW
- 3EVs are usually rated in kW, ICE in hp
Frequently Asked Questions
Related Conversions
- watts to hp
- BTU/hr to kW
About Horsepower to Kilowatt Conversion
Converting from Horsepower (hp) to Kilowatts (kW) is a commonpower conversion, especially when working between the imperial and metric systems. This converter provides a reliable way to convert any value from Horsepower to Kilowatts with high precision.
To convert horsepower to kilowatts, multiply the power value by 0.7457. This ensures accurate results whether you're working with everyday measurements or technical specifications.
Why Convert Between Horsepower and Kilowatts?
Power conversions between Horsepower and Kilowatts are frequently needed in various situations:
- International travel and communication
- Engineering and technical documentation
- Science and academic research
- Cooking and recipes from different regions
- Manufacturing and product specifications
- Engine and motor specifications
Since the imperial system is used primarily in the United States and a few other countries, while the metric system is common in most countries worldwide, converting between these systems is essential for global communication and understanding.
Conversion Accuracy
Our Horsepower to Kilowatt converter uses the precise conversion factor to provide accurate results. While some may use simplified approximations for quick mental calculations, this converter ensures high precision for all applications, from everyday use to scientific and engineering calculations.
For everyday use, you can often use simplified conversion factors, but for technical work, the full precision offered by this converter is recommended.
Practical Applications
Converting between Horsepower and Kilowatts has numerous practical applications:
- Comparing engine and motor specifications
- Electrical system design and planning
- Energy consumption analysis
- HVAC system sizing and selection
Having a reliable converter ensures accuracy in these applications, preventing costly errors and ensuring consistency across different measurement systems.
Historical Context
The relationship between Horsepower and Kilowatts has evolved over time:
Understanding these historical contexts helps explain why we need these conversions and why certain conversion factors are used.
Horsepower to Kilowatt Conversion Table
This table provides common conversion values from Horsepower to Kilowatts. Use it as a quick reference for frequently needed conversions.
| Horsepower (hp) | Kilowatt (kW) |
|---|---|
| 1 | 0.7457 |
| 5 | 3.7285 |
| 10 | 7.457 |
| 20 | 14.914 |
| 50 | 37.285 |
| 100 | 74.57 |
How to use this table: Find the Horsepower value in the left column, then read across to find the equivalent Kilowatt value.
Conversion formula: To convert from Horsepower to Kilowatts, multiply the horsepower value by the conversion factor.
Common Power Conversion Formulas
Here are some common conversion formulas for power units that you might find useful:
Multiply the power value in horsepower by 0.7457 to get kilowatts.
Divide the power value in kilowatts by 0.7457 to get horsepower.
Multiply the power value in watts by 0.001 to get kilowatts.
Multiply the power value in BTU per hour by 0.000293071 to get kilowatts.