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What is a Troy Ounce?

Troy Ounce is a unit used in mass conversions and practical measurement work.

Troy Ounce is a unit used in mass conversions and practical measurement work.

The troy ounce of 31.1034768 g, named after the medieval market town of Troyes in France, is the standard unit for pricing gold, silver and platinum.

Measurement system: Metric, customary and historical mass-measurement usage. SI equivalent: 1 ozt = 0.0311034768 kg.

Troy Ounce facts

Unit name
Troy Ounce
Symbol
ozt
Category
Mass
Measurement system
Metric, customary and historical mass-measurement usage
SI equivalent
1 ozt = 0.0311034768 kg
Common uses
Products, material quantities, scientific work and trade

Definition of the troy ounce

Troy Ounce is a unit used in mass conversions and practical measurement work.

Measurement system and SI relationship

Metric, customary and historical mass-measurement usage

SI equivalent: 1 ozt = 0.0311034768 kg

History of the troy ounce

The troy ounce of 31.1034768 g, named after the medieval market town of Troyes in France, is the standard unit for pricing gold, silver and platinum.

Where is the troy ounce used?

Products, material quantities, scientific work and trade

Troy Ounce conversion tools

Sources

  1. BIPM: The International System of Units (SI Brochure)
  2. BIPM: SI base unit: kilogram
  3. NIST: SI Units — Mass
  4. NIST: Guide for the Use of the International System of Units

Other languages

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