Horsepower (British) (hp) | Watts (W) |
---|---|
0 | 0 |
1 | 745.69987186259 |
2 | 1491.3997437252 |
3 | 2237.0996155878 |
4 | 2982.7994874504 |
5 | 3728.499359313 |
6 | 4474.1992311756 |
7 | 5219.8991030382 |
8 | 5965.5989749008 |
9 | 6711.2988467634 |
10 | 7456.9987186259 |
20 | 14913.997437252 |
30 | 22370.996155878 |
40 | 29827.994874504 |
50 | 37284.99359313 |
60 | 44741.992311756 |
70 | 52198.991030382 |
80 | 59655.989749008 |
90 | 67112.988467634 |
100 | 74569.987186259 |
1000 | 745699.87186259 |
Let's explore the conversion between Horsepower (British) and Watts, including the formulas, examples, and interesting facts.
The conversion between Horsepower (British) and Watts is a direct linear relationship. The conversion factor is based on physical definitions of the units.
The relationship between Horsepower (British) and Watts is defined as follows:
Therefore, to convert Horsepower (British) to Watts, you multiply the Horsepower (British) value by 745.7.
Identify the value in Horsepower (British): Let's say you have 1 Horsepower (British).
Multiply by the conversion factor:
So, 1 Horsepower (British) is equal to 745.7 Watts.
To convert Watts to Horsepower (British), you divide the Watt value by 745.7.
The conversion formula:
Step-by-Step Conversion: Watts to Horsepower (British)
Identify the value in Watts: Let's say you have 1000 Watts.
Divide by the conversion factor:
So, 1000 Watts is approximately equal to 1.34 Horsepower (British).
The concept of horsepower was developed by James Watt, a Scottish inventor and mechanical engineer, during the late 18th century. Watt needed a way to market his steam engine by comparing its power output to something familiar to potential customers: horses. He determined that one horsepower was the amount of work a horse could do in a certain amount of time, specifically lifting a certain weight a certain distance. This was crucial for the adoption of steam engines, enabling people to understand their capabilities relative to animal power.
Here are some common applications where conversions between Horsepower (British) and Watts are useful:
See below section for step by step unit conversion with formulas and explanations. Please refer to the table below for a list of all the Watts to other unit conversions.
Horsepower is a unit of power, commonly used to measure the rate at which work is done. Specifically, it quantifies the amount of energy transferred or converted per unit of time. The "British" qualifier often distinguishes it from other variations, such as metric horsepower.
British horsepower (hp) is defined as the power required to raise a weight of 33,000 pounds by one foot in one minute. This is equivalent to 550 foot-pounds per second.
The concept of horsepower was popularized by James Watt in the late 18th century. He used it to market his improved steam engine, comparing its power output to that of horses, which were a common source of power at the time. Watt determined that a typical horse could turn a mill wheel 144 times in an hour, or 2.4 times a minute, with a radius of 12 feet. This led to his calculation of 32,400 foot-pounds per minute, which he then rounded up to 33,000 foot-pounds per minute for marketing purposes.
The formula for calculating horsepower is:
Where:
Thus, 1 hp = 33,000 ft⋅lb/min or 550 ft⋅lb/s
Horsepower can be converted to other units of power, such as:
Understanding horsepower can help you make informed decisions when purchasing vehicles, machinery, and other equipment. It can also give you a better appreciation for the amount of work that different types of engines and machines are capable of performing. For more information on power and energy see this page on Energy Education.
Watts are the standard unit of power in the International System of Units (SI). Power, in physics, is the rate at which energy is transferred, used, or transformed. Therefore, a watt measures how quickly energy is being used or generated. It's a crucial unit for understanding electrical circuits, energy consumption, and various physical processes.
One watt is defined as one joule per second. In other words, if one joule of energy is used or produced in one second, that's a power of one watt. The formula for calculating power in watts is:
Where:
In electrical circuits, power can also be calculated using voltage and current:
Where:
The watt is named after James Watt, a Scottish inventor and mechanical engineer who significantly improved the efficiency of steam engines in the late 18th century. His innovations were crucial to the Industrial Revolution. The unit "watt" was adopted in 1882 as a tribute to his contributions to the development of power and energy technologies.
Light Bulbs: Traditional incandescent light bulbs are often rated in watts (e.g., 60W, 100W). These numbers indicate how much electrical power the bulb consumes. LED bulbs, being more energy-efficient, produce the same amount of light with much lower wattage.
Household Appliances: Microwave ovens (e.g., 1000W), refrigerators, and washing machines all have wattage ratings. This rating tells you how much power they draw from the electrical supply when in use.
Electric Motors: The power of electric motors, such as those in power tools or electric vehicles, is often measured in watts or kilowatts (1 kW = 1000 W).
Human Power: A healthy human can sustain about 75 watts of power output for an extended period. Athletes, during short bursts of extreme exertion, can generate over 1000 watts.
Kilowatt-hour (kWh): Utility companies typically bill consumers based on kilowatt-hours (kWh), which represents the amount of energy used over time. One kWh is equal to 3.6 million joules. A 100-watt light bulb left on for 10 hours consumes 1 kWh of energy.
Power vs. Energy: Power (watts) is the rate at which energy is used, while energy (joules or kWh) is the total amount of energy consumed over a period of time.
Power Factor: In AC circuits, power factor is the ratio of real power (watts) to apparent power (volt-amperes). It indicates how effectively electrical power is being used. A power factor of 1 means that all the power is being used effectively, while a power factor less than 1 indicates that some of the power is being wasted. Learn more at Fluke's guide to power factor.
Convert 1 hp to other units | Result |
---|---|
Horsepower (British) to Watts (hp to W) | 745.69987186259 |
Horsepower (British) to Milliwatts (hp to mW) | 745699.87186259 |
Horsepower (British) to Kilowatts (hp to kW) | 0.7456998718626 |
Horsepower (British) to Megawatts (hp to MW) | 0.0007456998718626 |
Horsepower (British) to Gigawatts (hp to GW) | 7.4569987186259e-7 |
Horsepower (British) to Horsepower (metric) (hp to PS) | 1.0138696658051 |
Horsepower (British) to British thermal units per second (hp to Btu/s) | 0.7067870070496 |
Horsepower (British) to Foot-pounds per second (hp to ft-lb/s) | 550 |