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Troy Weight Conversion Calculator

Convert Troy Weight
↕


Answer:
= 480 gr

1 oz × 480 gr / oz
= 480 gr
Multiply by 480
for quick conversions.
Solution
To convert oz to gr, use the conversion factor

1 oz = 480 gr

Then divide both sides of the equation by oz, to get the conversion ratio

1 = 480 gr / oz

Using the conversion ratio to complete the unit conversion, basically multiplying the input by 1, the oz units cancel out, and you are left with gr units.

1 oz × 480 gr / oz
= 480 gr


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This online conversion calculator will convert among different troy units of weight or mass. For broader calculations use the weight conversion calculator and more specific to avoirdupois, the U.S. standard system units, use avoirdupois unit conversions.

Troy system of units is still commonly used for precious metals such as gold, silver and platinum along with gemstones.

Units, symbols and conversion values
used in this acceleration calculator
Unit Name
Symbol
Value in grains (gr)
carat (metric)
ct
3.08647214
point (metric)
pt
0.0308647214
dram (troy)
dr
60
grain (troy)
gr
1
gram
g
15.4323607
milligram
mg
0.0154323607
ounce (troy)
oz
480
pennyweight
dwt
24
pound (troy)
lb
5760

References/ Further Reading

The National Institute of Standards and Technology (NIST) - The NIST Guide for the use of the International System of Units - Appendix B, subsections B.8 Factors for Units Listed Alphabetically and B.9 Factors for units listed by kind of quantity or field of science.

Lide, David R., Daniel (Editor-in-Chief). CRC Handbook of Chemistry and Physics, 89th Edition New York, NY: CRC Press, p. 1-28, 2008.

Wikipedia contributors. "Conversion of units" Wikipedia, The Free Encyclopedia. Wikipedia, The Free Encyclopedia, last visited 24 Jun. 2011.

 

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Furey, Edward "Troy Weight Conversion Calculator" at https://www.calculatorsoup.com/calculators/conversions/weighttroy.php from CalculatorSoup, https://www.calculatorsoup.com - Online Calculators

Last updated: August 1, 2025