What Is This Tool?
This converter transforms values from pound (troy or apothecary), a historical weight measurement, into stone (US), a traditional British unit. It assists in interpreting older mass records in a familiar form.
How to Use This Tool?
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Enter a value in pound (troy or apothecary)
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Select stone (US) as the target unit
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Click convert to see the equivalent mass in stone (US)
Key Features
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Converts between pound (troy or apothecary) and stone (US) units
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Supports understanding of historical and precious-metal weight measures
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Browser-based and easy to use without installations
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Helpful for converting old apothecary and bullion data to common UK/US units
Examples
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Convert 10 pound (troy or apothecary) to stone (US): results in 0.658285714 stone (US)
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Convert 5 pound (troy or apothecary) to stone (US): results in 0.329142857 stone (US)
Common Use Cases
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Interpreting apothecary prescriptions and pharmacological records
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Cataloguing weights of historical coins and museum pieces
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Analyzing old bullion or precious-metal measurements
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Converting livestock and agricultural weight documents
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Supporting conversion of older imperial weight units in engineering and medical records
Tips & Best Practices
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Confirm whether the source measurement uses troy or apothecary pound definitions
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Be aware that stone (US) is uncommon in American use despite same value
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Use this tool primarily for historical, educational, or cataloguing purposes
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Cross-check converted values when dealing with critical forensic or medical data
Limitations
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Pound (troy or apothecary) is primarily obsolete except in specialized fields like bullion trading
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Stone (US) usage is rare in the United States and may require user awareness
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Conversion accuracy may vary due to historical rounding and unit variations over time
Frequently Asked Questions
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What is a pound (troy or apothecary)?
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It is a historic unit of mass equal to 12 troy ounces or exactly 373.2417216 grams, used in older apothecary and precious-metal systems.
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What exactly is stone (US)?
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Stone (US) is a traditional British unit of mass equal to 14 avoirdupois pounds, used in the UK and Ireland for body and commodity weights, and occasionally referenced in the US.
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Why convert from pound (troy or apothecary) to stone (US)?
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To interpret and compare historical weights in apothecary or bullion contexts with more familiar British mass units for research and cataloguing.
Key Terminology
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Pound (troy or apothecary)
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An old unit of mass equal to 12 troy ounces or exactly 373.2417216 grams, used historically in apothecaries and precious-metal measurements.
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Stone (US)
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A traditional British unit of weight equal to 14 avoirdupois pounds, used especially to report body and commodity weights.