Kilogram Converter
Convert Kilogram to Stone (us) 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.
Stone (US)st
Target UnitThe stone (abbreviated as 'st') is a unit of weight that is primarily used in the UK and Ireland for measuring human body weight. One stone is equivalent to 14 pounds or approximately 6.35 kilograms. It is a non-SI unit but remains commonly used in everyday language and practice. The use of the stone allows for a more manageable figure when expressing weights over 10 pounds, making it particularly popular in the health and fitness sectors. While it has somewhat fallen out of favor in many parts of the world, it still holds cultural significance and practical application in specific regions.
Current Use
Today, the stone is primarily used in the UK and Ireland for measuring body weight, particularly in medical settings and personal health contexts. It is common for individuals to express their weight in stones and pounds, with many weighing scales incorporating this measure. The stone continues to be a significant unit of measurement in sports, particularly weight classes in boxing and wrestling, where competitors' weights are often reported in stones.
Fun Fact
The stone was historically used in various regions, leading to different weights such as the 'Irish stone' which is 16 pounds.
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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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Stone (US)
weight • Non-SI
Definition
The stone (abbreviated as 'st') is a unit of weight that is primarily used in the UK and Ireland for measuring human body weight. One stone is equivalent to 14 pounds or approximately 6.35 kilograms. It is a non-SI unit but remains commonly used in everyday language and practice. The use of the stone allows for a more manageable figure when expressing weights over 10 pounds, making it particularly popular in the health and fitness sectors. While it has somewhat fallen out of favor in many parts of the world, it still holds cultural significance and practical application in specific regions.
History & Origin
The stone as a unit of weight has historical roots in various systems of measurement, dating back to ancient times. Originally, stones of various sizes were used throughout Europe for trade and commerce, with different regions adopting their own standard sizes. The use of the stone varied widely, with some areas using stones that weighed 8, 10, or even 20 pounds. In England, the stone was standardized to 14 pounds in 1389, a decision that has persisted into modern times. This standardization helped facilitate trade and commerce across the nation, ensuring that both buyers and sellers had a clear understanding of weight measurements.
Etymology: The word 'stone' comes from the Old English 'stan,' which means a rock or stone. This term reflects the historical use of actual stones as weights in trade.
Current Use
Today, the stone is primarily used in the UK and Ireland for measuring body weight, particularly in medical settings and personal health contexts. It is common for individuals to express their weight in stones and pounds, with many weighing scales incorporating this measure. The stone continues to be a significant unit of measurement in sports, particularly weight classes in boxing and wrestling, where competitors' weights are often reported in stones.
💡 Fun Facts
- •The stone was historically used in various regions, leading to different weights such as the 'Irish stone' which is 16 pounds.
- •In the UK, a stone is often humorously referred to as a 'stone of weight loss' when discussing dieting.
- •The stone remains popular in sports like boxing, where weight classes are often defined in stones.
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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.