Watt Converter
Convert Watt to Kilojoule Hour and more • 80 conversions
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Unit Explanations
WattW
Source UnitThe watt (symbol: W) is the SI unit of power, defined as the rate of energy transfer equivalent to one joule per second. It measures the amount of energy conversion or transfer that occurs per unit time. In practical terms, it quantifies the rate at which work is done or energy is consumed. The watt is a derived unit in the International System of Units (SI), and it is used extensively in various fields such as electricity, mechanics, and thermodynamics to quantify power output or consumption.
Current Use
The watt is widely used across the globe to measure electrical power, mechanical power, and heat transfer. It serves as a fundamental unit in the fields of electrical engineering, physics, and many applied sciences. It is crucial for calculating energy consumption in households, industries, and for determining the power output of engines and machinery.
Fun Fact
One watt is equivalent to 1/746th of a horsepower.
Kilojoule HourkJ·h
Target UnitThe kilojoule hour (kJ·h) is a derived unit of energy that represents the total energy transferred or consumed when a power of one kilowatt is applied for one hour. It is commonly used in various fields, including nutrition, engineering, and thermodynamics. The kilojoule hour is especially significant in contexts where energy consumption over time is analyzed, such as in evaluating energy efficiency and performance of systems. The relationship between power, time, and energy is foundational in physics, where power is defined as energy per unit time.
Current Use
Today, the kilojoule hour is utilized across multiple sectors, including energy production, food industries, and environmental science. It is critical for measuring energy efficiency in appliances and engines, assessing nutritional content in food labeling, and calculating energy consumption in residential and commercial settings. The kilojoule hour provides a practical framework for energy audits and sustainability assessments, aiding in the transition toward more energy-efficient practices globally.
Fun Fact
The joule was originally defined in terms of mechanical work and was later adopted for all forms of energy.
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📐Conversion Formula
= × 1.00000How to Convert
To convert to , multiply the value by 1.00000. This conversion factor represents the ratio between these two units.
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💡 Pro Tip: For the reverse conversion ( → ), divide by the conversion factor instead of multiplying.
Watt
power • SI Unit
Definition
The watt (symbol: W) is the SI unit of power, defined as the rate of energy transfer equivalent to one joule per second. It measures the amount of energy conversion or transfer that occurs per unit time. In practical terms, it quantifies the rate at which work is done or energy is consumed. The watt is a derived unit in the International System of Units (SI), and it is used extensively in various fields such as electricity, mechanics, and thermodynamics to quantify power output or consumption.
History & Origin
The watt is named after James Watt, a Scottish engineer and inventor whose improvements to the steam engine were fundamental to the changes brought by the Industrial Revolution. The unit was introduced to provide a consistent measure of power, reflecting Watt's contributions to power engineering.
Etymology: Named after James Watt, a pioneer in steam engine development.
Current Use
The watt is widely used across the globe to measure electrical power, mechanical power, and heat transfer. It serves as a fundamental unit in the fields of electrical engineering, physics, and many applied sciences. It is crucial for calculating energy consumption in households, industries, and for determining the power output of engines and machinery.
💡 Fun Facts
- •One watt is equivalent to 1/746th of a horsepower.
- •The watt is the power required to lift a small apple one meter in one second.
- •James Watt's improvements to the steam engine greatly increased its efficiency and power output.
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Kilojoule Hour
power • Non-SI
Definition
The kilojoule hour (kJ·h) is a derived unit of energy that represents the total energy transferred or consumed when a power of one kilowatt is applied for one hour. It is commonly used in various fields, including nutrition, engineering, and thermodynamics. The kilojoule hour is especially significant in contexts where energy consumption over time is analyzed, such as in evaluating energy efficiency and performance of systems. The relationship between power, time, and energy is foundational in physics, where power is defined as energy per unit time.
History & Origin
The kilojoule hour originated from the need to quantify energy in terms of time, particularly in the context of electricity and mechanical work. The joule, named after James Prescott Joule, is a fundamental unit of energy in the International System of Units (SI). The prefix 'kilo-' indicates a factor of one thousand, thus a kilojoule represents 1,000 joules. The combination of this energy unit with time (in hours) emerged as a practical measure for evaluating energy consumption and production over specific durations.
Etymology: The term 'kilojoule' combines the prefix 'kilo-', derived from the Greek word 'chilioi' meaning 'thousand', with 'joule', named in honor of the English physicist James Prescott Joule.
Current Use
Today, the kilojoule hour is utilized across multiple sectors, including energy production, food industries, and environmental science. It is critical for measuring energy efficiency in appliances and engines, assessing nutritional content in food labeling, and calculating energy consumption in residential and commercial settings. The kilojoule hour provides a practical framework for energy audits and sustainability assessments, aiding in the transition toward more energy-efficient practices globally.
💡 Fun Facts
- •The joule was originally defined in terms of mechanical work and was later adopted for all forms of energy.
- •1 kilojoule is approximately equal to 0.239 kilocalories, commonly used in dietary contexts.
- •The kilojoule hour can be used to compare the energy efficiency of different appliances and vehicles.
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Frequently Asked Questions
How do I convert to ?▼
To convert to , multiply your value by 1. For example, 10 equals 10 .
What is the formula for to conversion?▼
The formula is: = × 1. This conversion factor is based on international standards.
Is this to converter accurate?▼
Yes! MetricConv uses internationally standardized conversion factors from organizations like NIST and ISO. Our calculations support up to 15 decimal places of precision, making it suitable for scientific, engineering, and everyday calculations.
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