Kilogram Converter
Convert Kilogram to Pound Troy Or Apothecary 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.
Pound Troylb t
Target UnitThe troy pound, often denoted as lb t, is a unit of mass that is primarily used for the measurement of precious metals such as gold, silver, and gemstones. It is defined as exactly 373.2417216 grams. This unit differs from the more commonly used avoirdupois pound, which is equivalent to approximately 453.59237 grams. The troy pound is part of the troy weight system, which is distinct from the avoirdupois weight system used in most commercial applications today. As such, the troy pound holds a specific place in trade and commerce, particularly in the context of the bullion market.
Current Use
Today, the troy pound is utilized mainly in the precious metals industry, where it is the standard for weighing gold, silver, and platinum. It is recognized globally, particularly in financial markets and jewelry, where accurate measurement is critical for valuation. The troy pound is essential for bullion trading, as it ensures consistency in pricing and weight across international borders. In addition, some antique dealers and collectors may refer to the troy pound when appraising items made from precious metals.
Fun Fact
The troy pound is often confused with the avoirdupois pound, which is used for everyday items and is heavier than the troy pound.
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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.
📏 Real-World Examples
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Pound Troy
weight • Non-SI
Definition
The troy pound, often denoted as lb t, is a unit of mass that is primarily used for the measurement of precious metals such as gold, silver, and gemstones. It is defined as exactly 373.2417216 grams. This unit differs from the more commonly used avoirdupois pound, which is equivalent to approximately 453.59237 grams. The troy pound is part of the troy weight system, which is distinct from the avoirdupois weight system used in most commercial applications today. As such, the troy pound holds a specific place in trade and commerce, particularly in the context of the bullion market.
History & Origin
The troy pound has origins tracing back to the Roman monetary system, where the 'libra' was used as a base unit of weight. The term 'troy' likely derives from the city of Troyes in France, a significant trading center in the Middle Ages. It was here that merchants began to standardize weights for precious metals. By the 14th century, the troy weight system became increasingly standardized in England, and by the late 15th century, it was adopted for use in the measurement of gold and silver. The adoption of the troy pound signified a clear delineation from other weight systems, particularly as trade in precious metals expanded.
Etymology: The term 'troy' is believed to have originated from the city of Troyes, France, where merchants traded gold and silver, leading to the establishment of a standardized weight system for these metals.
Current Use
Today, the troy pound is utilized mainly in the precious metals industry, where it is the standard for weighing gold, silver, and platinum. It is recognized globally, particularly in financial markets and jewelry, where accurate measurement is critical for valuation. The troy pound is essential for bullion trading, as it ensures consistency in pricing and weight across international borders. In addition, some antique dealers and collectors may refer to the troy pound when appraising items made from precious metals.
💡 Fun Facts
- •The troy pound is often confused with the avoirdupois pound, which is used for everyday items and is heavier than the troy pound.
- •The troy system uses 12 ounces per pound, while the avoirdupois system uses 16 ounces per pound.
- •Gold and silver are measured in troy ounces, with 1 troy pound equal to 12 troy ounces.
📏 Real-World Examples
🔗 Related Units
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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.