Kilogram Converter
Convert Kilogram to Planck Mass and more • 73 conversions
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Unit Explanations
Kilogramkg
Source UnitThe kilogram, abbreviated as kg, is the SI unit of mass and is defined as being equal to the mass of the International Prototype of the Kilogram, which is a platinum-iridium cylinder kept at the International Bureau of Weights and Measures (BIPM) in Sèvres, France. This definition was established in 1889 and was the only base unit defined by a physical object. However, in 2019, the definition of the kilogram was redefined in terms of fundamental constants, specifically the Planck constant (h), which is set at exactly 6.62607015 × 10^-34 joule seconds. This redefinition allows for more precise measurements and ensures that the kilogram remains consistent and reproducible over time.
Current Use
Today, the kilogram is widely used across the globe as the standard unit of mass in scientific, commercial, and everyday contexts. It is employed in various industries including manufacturing, agriculture, and healthcare. For instance, in the food industry, products are often sold by mass, measured in kilograms. In healthcare, medication dosages may also be prescribed based on the patient’s weight in kilograms. While most countries use the kilogram as part of the metric system, some countries, such as the United States, still use imperial units for certain applications, though the metric system is increasingly adopted in scientific and technical fields. The versatility of the kilogram makes it a vital unit in international trade and commerce.
Fun Fact
The kilogram was the first unit of measurement to be defined by a physical artifact.
Planck Massm_p
Target UnitThe Planck mass is a fundamental unit of mass in the field of quantum mechanics and general relativity, defined as m_p = √(ħc/G), where ħ is the reduced Planck constant, c is the speed of light in a vacuum, and G is the gravitational constant. With a value of approximately 2.176 × 10^-8 kg, the Planck mass represents the mass scale at which quantum gravitational effects cannot be ignored, becoming relevant in theories that unify quantum mechanics with gravitational physics. It highlights the limitations of the standard model of particle physics at energy scales approaching the Planck mass.
Current Use
The Planck mass is utilized primarily in theoretical physics, particularly in the study of quantum gravity and cosmology. It serves as a reference point when discussing particle masses and the energy scales where gravitational effects become significant. Researchers use the Planck mass to explore concepts such as black hole thermodynamics and the early universe conditions just after the Big Bang.
Fun Fact
The Planck mass is about the mass of a small grain of sand.
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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.
Kilogram
force • SI Unit
Definition
The kilogram, abbreviated as kg, is the SI unit of mass and is defined as being equal to the mass of the International Prototype of the Kilogram, which is a platinum-iridium cylinder kept at the International Bureau of Weights and Measures (BIPM) in Sèvres, France. This definition was established in 1889 and was the only base unit defined by a physical object. However, in 2019, the definition of the kilogram was redefined in terms of fundamental constants, specifically the Planck constant (h), which is set at exactly 6.62607015 × 10^-34 joule seconds. This redefinition allows for more precise measurements and ensures that the kilogram remains consistent and reproducible over time.
History & Origin
The kilogram originated in the late 18th century during the period of the French Revolution, as part of the efforts to standardize measurements across France and eventually the world. The need for a uniform measurement system became apparent in the wake of the Revolution, as varying local measures were causing confusion and inefficiency in trade and governance. Thus, the metric system was born, with the kilogram being one of its foundational units. The first kilogram was defined as the mass of one liter of water at its maximum density, which is approximately equal to 1,000 cubic centimeters. This practical approach to defining mass allowed for easier adoption across various sectors.
Etymology: The term 'kilogram' is derived from the Greek word 'kilo', meaning 'a thousand', and the French word 'gramme', which itself comes from the Late Latin 'gramma', meaning 'small weight'.
Current Use
Today, the kilogram is widely used across the globe as the standard unit of mass in scientific, commercial, and everyday contexts. It is employed in various industries including manufacturing, agriculture, and healthcare. For instance, in the food industry, products are often sold by mass, measured in kilograms. In healthcare, medication dosages may also be prescribed based on the patient’s weight in kilograms. While most countries use the kilogram as part of the metric system, some countries, such as the United States, still use imperial units for certain applications, though the metric system is increasingly adopted in scientific and technical fields. The versatility of the kilogram makes it a vital unit in international trade and commerce.
💡 Fun Facts
- •The kilogram was the first unit of measurement to be defined by a physical artifact.
- •The International Prototype of the Kilogram lost mass over time, leading to the redefinition in 2019.
- •The kilogram is the only SI base unit with a prefix ('kilo') included in its name.
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Planck Mass
weight • Non-SI
Definition
The Planck mass is a fundamental unit of mass in the field of quantum mechanics and general relativity, defined as m_p = √(ħc/G), where ħ is the reduced Planck constant, c is the speed of light in a vacuum, and G is the gravitational constant. With a value of approximately 2.176 × 10^-8 kg, the Planck mass represents the mass scale at which quantum gravitational effects cannot be ignored, becoming relevant in theories that unify quantum mechanics with gravitational physics. It highlights the limitations of the standard model of particle physics at energy scales approaching the Planck mass.
History & Origin
The concept of the Planck mass was first introduced by physicist Max Planck in 1899 as part of a system of natural units that aimed to simplify physical equations, particularly in the realms of quantum mechanics and gravitation. Planck sought a way to express physical quantities purely in terms of fundamental constants, leading to the establishment of the Planck units, including mass, length, and time.
Etymology: The term 'Planck mass' is derived from the name of Max Planck, a German physicist who is considered the father of quantum theory.
Current Use
The Planck mass is utilized primarily in theoretical physics, particularly in the study of quantum gravity and cosmology. It serves as a reference point when discussing particle masses and the energy scales where gravitational effects become significant. Researchers use the Planck mass to explore concepts such as black hole thermodynamics and the early universe conditions just after the Big Bang.
💡 Fun Facts
- •The Planck mass is about the mass of a small grain of sand.
- •It is approximately 22 micrograms, which is incredibly small on a human scale.
- •In particle physics, the Planck mass is often considered the limit for particles before they become black holes.
📏 Real-World Examples
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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.
Can I convert back to ?▼
Absolutely! You can use the swap button (⇄) in the converter above to reverse the conversion direction, or visit our to converter.