What Is This Tool?
This unit converter transforms weight values from ounces to the US assay ton, a specialized mass unit used in mining and assaying to report precious metal content.
How to Use This Tool?
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Enter the weight value in ounces (oz).
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Select ‘ounce’ as the input unit.
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Choose ‘ton (assay) (US)’ as the output unit.
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Click on convert to get the equivalent value.
Key Features
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Converts from ounce (oz) to US assay ton (AT)
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Supports precious metal measurement and mining contexts
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Uses a fixed conversion rate for quick calculations
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Web-based and user-friendly interface
Examples
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10 Ounces (oz) equals 9.719835389 Ton (assay) (US) (AT)
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0.5 Ounce (oz) equals 0.48599176945 Ton (assay) (US) (AT)
Common Use Cases
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Reporting gold or silver concentration on assay certificates as ounces per assay ton
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Calculating payments for ore shipments based on metal content per assay ton
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Converting historical assay data into modern units for resource estimation
Tips & Best Practices
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Verify the exact assay ton standard used due to historical variations
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Use the tool for precious metals trading and geological assay reporting
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Complement with explicit mass units such as grams per tonne when necessary
Limitations
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The US assay ton’s exact mass has changed over time and across regions
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This conversion may be ambiguous without specifying the defined standard
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Modern reporting often favors explicit mass units to avoid confusion
Frequently Asked Questions
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What is the ounce unit used here?
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The ounce (oz) is a unit of mass commonly used in customary systems, defined as 28.349523125 grams (avoirdupois ounce) or 31.1034768 grams for the troy ounce used in precious metals.
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What does the US assay ton represent?
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The US assay ton is a historic mining mass unit used to standardize precious metal reporting, but its exact mass varies by jurisdiction and practice.
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Why should I be careful using this conversion?
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Because the US assay ton’s mass definition varies, conversions should be verified and used cautiously, especially in formal reporting.
Key Terminology
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Ounce (oz)
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A unit of mass used in customary systems, with the common avoirdupois ounce equal to 28.349523125 grams and the troy ounce at 31.1034768 grams for precious metals.
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Ton (assay) (US) [AT (US)]
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A historical mass unit from mining used to define sample mass for reporting precious-metal content, varying in exact mass by location and practice.
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Troy Ounce
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A variant of the ounce specifically used for measuring precious metals, weighing 31.1034768 grams.