Troy Ounce to Gram Conversion Calculator: Free Online Tool
Convert troy ounces to grams with our free online weight converter.
Troy Ounce to Gram Calculator
How to Use the Calculator:
- Enter the value you want to convert in the 'From' field (Troy Ounce).
- The converted value in Gram will appear automatically in the 'To' field.
- Use the dropdown menus to select different units within the Weight category.
- Click the swap button (⇌) to reverse the conversion direction.
How to Convert Troy Ounce to Gram
Converting Troy Ounce to Gram involves multiplying the value by a specific conversion factor, as shown in the formula below.
Formula:
1 Troy Ounce = 31.1035 gramsExample Calculation:
Convert 5 troy ounces: 5 × 31.1035 = 155.518 grams
Disclaimer: For Reference Only
These conversion results are provided for informational purposes only. While we strive for accuracy, we make no guarantees regarding the precision of these results, especially for conversions involving extremely large or small numbers which may be subject to the inherent limitations of standard computer floating-point arithmetic.
Not for professional use. Results should be verified before use in any critical application. View our Terms of Service for more information.
What is a Troy Ounce and a Gram?
The troy ounce (oz t) is a unit of mass traditionally used for precious metals (like gold, silver, platinum) and sometimes gemstones. It is defined as exactly 31.1034768 grams.
The gram is a unit of mass in the metric system. Originally defined as the mass of one cubic centimeter of water at its maximum density, it is now defined as 1/1000 of a kilogram.
Note: The Troy Ounce is part of the imperial/US customary system, primarily used in the US, UK, and Canada for everyday measurements. The Gram belongs to the metric (SI) system.
History of the Troy Ounce and Gram
The troy weight system likely originated in Troyes, France, a major trading town in the Middle Ages. It became a standard in England for precious metals and coinage. Unlike the more common avoirdupois ounce (approx. 28.35 g), the troy ounce persists in the precious metals market.
Introduced in France after the French Revolution as part of the metric system. It became a fundamental unit for scientific measurement.
Common Uses for troy ounces and grams
Explore the typical applications for both Troy Ounce (imperial/US) and Gram (metric) to understand their common contexts.
Common Uses for troy ounces
- Precious Metals: The standard unit for quoting prices and weighing gold, silver, and platinum bullion (bars, coins).
- Gemstones: Sometimes used, although carat is more common for individual stones.
Common Uses for grams
- Cooking & Baking: Standard unit worldwide for measuring dry ingredients like flour, sugar, spices, and non-liquid items like butter.
- Groceries: Used for labeling the net weight of many packaged food products (e.g., cereal boxes, canned goods, snacks).
- Science: Common unit for mass measurements in chemistry labs, biology, and physics experiments.
- Jewelry & Precious Metals: Often used to measure the weight of gold, silver, and gemstones.
- Postal Services: Used globally for determining the weight and cost of letters and small parcels.
Frequently Asked Questions
Questions About Troy Ounce (oz t)
Is a troy ounce the same as a regular ounce?
No. A troy ounce (approx. 31.10 g) is heavier than an avoirdupois ounce (the common "ounce" used for food, etc., approx. 28.35 g).
How many troy ounces are in a troy pound?
There are 12 troy ounces in one troy pound (which is lighter than an avoirdupois pound).
How many grams are in a troy ounce?
There are exactly 31.1034768 grams in 1 troy ounce.
About Gram (g)
Is the gram part of the metric system?
Yes, the gram (g) is a fundamental unit of mass in the metric system, equivalent to 1/1000 of a kilogram.
What is a gram commonly used for?
It's widely used for measuring small masses, especially in cooking, groceries, science labs, and for weighing precious metals.
How many grams are in a kilogram?
There are exactly 1000 grams (g) in 1 kilogram (kg).
Conversion Table: Troy Ounce to Gram
| Troy Ounce (oz t) | Gram (g) |
|---|---|
| 1 | 31.104 |
| 5 | 155.517 |
| 10 | 311.035 |
| 25 | 777.587 |
| 50 | 1,555.174 |
| 100 | 3,110.348 |
| 500 | 15,551.738 |
| 1,000 | 31,103.477 |
All Weight Conversions
Other Units from Weight
- Kilogram (kg)
- Milligram (mg)
- Pound (lb)
- Ounce (oz)
- Stone (st)
- Ton (metric) (t)
- Ton (US) (ton)
- Ton (UK) (long ton)
- Microgram (µg)
- Carat (ct)
- Slug (sl)
- Pennyweight (dwt)
- Grain (gr)
- Dram (dr)
- Quintal (q)
- Atomic Mass Unit (u)
- Pavan (India) (pavan)
- Kati (India) (kati)
- Masha (India) (masha)
- Dina (India) (dina)
- Pras (India) (pras)
- Lota (India) (lota)