An avoirdupois ounce is 1/16 pound.
Ounces to Troy ounces
Convert ounces (oz) to troy ounces (oz t) instantly. Free online weight converter with formulas, tables and examples.
Reserved for a responsive leaderboard above the conversion details.
Professional calculator style
World-scale conversion engine
30+ categories
6,500+ units
Instant results
Offline ready
Converter
Length Converter
Convert metric, imperial, and nautical distance units.
Context values
Some unit families need one extra value for a physically accurate result.
A troy ounce is exactly 31.1034768 grams.
oz t = oz × 0.911458333333
Results update instantly for Ounces to Troy ounces conversions.
Reserved above the conversion cards and below the converter.
Formula
oz t = oz × 0.911458333333
oz = oz t ÷ 0.911458333333
Conversion table
| 1 oz | 0.911458 oz t |
| 5 oz | 4.557292 oz t |
| 10 oz | 9.114583 oz t |
| 20 oz | 18.229167 oz t |
| 50 oz | 45.572917 oz t |
| 100 oz | 91.145833 oz t |
| 500 oz | 455.729167 oz t |
| 1000 oz | 911.458333 oz t |
Related conversions
Reserved between the cards and the FAQ so the page stays balanced.
Frequently asked questions
What is the source unit in this conversion?
The source unit is the ounce (oz). An avoirdupois ounce is 1/16 pound.
What is the destination unit in this conversion?
The destination unit is the troy ounce (oz t). A troy ounce is exactly 31.1034768 grams.
How do I convert ounces to troy ounces?
Multiply the number of ounces by 0.911458333333 to get the equivalent value in troy ounces. For example, 5 oz × 0.911458333333 = 4.557292 oz t.
Is the ounce to troy ounce conversion exact?
Yes. This converter uses a fixed factor of 0.911458333333, so results are precise and consistent every time you use it.
Where is this conversion commonly used?
It's used in everyday measurement, shipping and logistics, scientific and industrial work, and any context where you need to switch between ounce and troy ounce values.
Can I convert troy ounces back to ounces?
Yes. Multiply the troy ounces value by 1.09714285714, or divide it by 0.911458333333, to convert back to ounces.
Reserved between the FAQ and the article so the page stays balanced.
About this conversion
This page converts ounces (oz) into troy ounces (oz t) using the Universal Converter's mass conversion engine.
Ounce-to-Troy ounce conversions are useful for everyday calculations, scientific work, shipping, and any task that mixes different weight or mass units.
The formula is oz t = oz × 0.911458333333, based on the standard definitions of ounce and troy ounce.
Because the conversion factor is fixed, results stay consistent and repeatable no matter how many times you calculate them.
Ounce: An avoirdupois ounce is 1/16 pound. Troy ounce: A troy ounce is exactly 31.1034768 grams.