Kilogram Converter
Convert Kilogram to Ton Assay (uk) 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.
Ton Assay (UK)t assay
Target UnitThe ton assay (UK) is a unit of measurement used to express the content of precious metals, particularly gold and silver, in a ton of ore or material. It denotes the quantity of pure metal contained within a ton of the unrefined material, allowing for the assessment of its economic value. This unit is crucial in mining and metallurgy, where it helps determine the efficiency of extraction processes. The ton assay is equivalent to 1,000 kilograms, and it is often used in the context of mineral exploration and resource evaluation.
Current Use
Today, the ton assay is commonly used in the mining industry, particularly in the evaluation of gold and silver ores. It helps miners and investors assess the economic viability of mining operations. In the UK and other countries with rich mining histories, the ton assay remains a vital metric for determining the purity and market value of precious metal reserves.
Fun Fact
The ton assay has been used for centuries to facilitate trade in precious metals.
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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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Ton Assay (UK)
weight • Non-SI
Definition
The ton assay (UK) is a unit of measurement used to express the content of precious metals, particularly gold and silver, in a ton of ore or material. It denotes the quantity of pure metal contained within a ton of the unrefined material, allowing for the assessment of its economic value. This unit is crucial in mining and metallurgy, where it helps determine the efficiency of extraction processes. The ton assay is equivalent to 1,000 kilograms, and it is often used in the context of mineral exploration and resource evaluation.
History & Origin
The ton assay has its roots in the historical practices of mining and metallurgy, where miners needed an effective way to quantify the amount of valuable metals within ore. The UK has a long-standing tradition in mining, and as the industry evolved, so did the need for standardized measurements. The ton assay emerged as a practical solution to facilitate trade and valuation of precious metals during the 19th century.
Etymology: The term 'ton' originates from the Old English 'tun', meaning a cask or barrel, while 'assay' comes from the Latin 'exagiare', which means to weigh or assess. Together, they signify the assessment of weight in a specific quantity of material.
Current Use
Today, the ton assay is commonly used in the mining industry, particularly in the evaluation of gold and silver ores. It helps miners and investors assess the economic viability of mining operations. In the UK and other countries with rich mining histories, the ton assay remains a vital metric for determining the purity and market value of precious metal reserves.
💡 Fun Facts
- •The ton assay has been used for centuries to facilitate trade in precious metals.
- •In the UK, the ton assay is a standard measurement across various mining sectors.
- •The assay process involves complex chemical analyses to determine metal content.
📏 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.