Troy Ounce to Gram Conversion Calculator: Free Online Tool

Convert troy ounces to grams with our free online weight converter.

From:

oz t

Troy Ounce

To:

Gram

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 grams

Example Calculation:

Convert 5 troy ounces: 5 × 31.1035 = 155.518 grams

Note: Conversion factors can sometimes be rounded for display purposes. For precise calculations, always use the full factor or rely on the calculator above.

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

Kilogram to Gram Kilogram to Milligram Kilogram to Pound Kilogram to Ounce Kilogram to Stone Kilogram to Ton (metric)Kilogram to Ton (US)Kilogram to Ton (UK)Kilogram to Microgram Kilogram to Carat Kilogram to Slug Kilogram to Troy Ounce Kilogram to Pennyweight Kilogram to Grain Kilogram to Dram Kilogram to Quintal Gram to Kilogram Gram to Milligram Gram to Pound Gram to Ounce Gram to Stone Gram to Ton (metric)Gram to Ton (US)Gram to Ton (UK)Gram to Microgram Gram to Carat Gram to Slug Gram to Troy Ounce Gram to Pennyweight Gram to Grain Gram to Dram Gram to Quintal Milligram to Kilogram Milligram to Gram Milligram to Pound Milligram to Ounce Milligram to Stone Milligram to Ton (metric)Milligram to Ton (US)Milligram to Ton (UK)Milligram to Microgram Milligram to Carat Milligram to Slug Milligram to Troy Ounce Milligram to Pennyweight Milligram to Grain Milligram to Dram Milligram to Quintal Pound to Kilogram Pound to Gram Pound to Milligram Pound to Ounce Pound to Stone Pound to Ton (metric)Pound to Ton (US)Pound to Ton (UK)Pound to Microgram Pound to Carat Pound to Slug Pound to Troy Ounce Pound to Pennyweight Pound to Grain Pound to Dram Pound to Quintal Ounce to Kilogram Ounce to Gram Ounce to Milligram Ounce to Pound Ounce to Stone Ounce to Ton (metric)Ounce to Ton (US)Ounce to Ton (UK)Ounce to Microgram Ounce to Carat Ounce to Slug Ounce to Troy Ounce Ounce to Pennyweight Ounce to Grain Ounce to Dram Ounce to Quintal Stone to Kilogram Stone to Gram Stone to Milligram Stone to Pound Stone to Ounce Stone to Ton (metric)Stone to Ton (US)Stone to Ton (UK)Stone to Microgram Stone to Carat Stone to Slug Stone to Troy Ounce Stone to Pennyweight Stone to Grain Stone to Dram Stone to Quintal Ton (metric) to Kilogram Ton (metric) to Gram Ton (metric) to Milligram Ton (metric) to Pound Ton (metric) to Ounce Ton (metric) to Stone Ton (metric) to Ton (US)Ton (metric) to Ton (UK)Ton (metric) to Microgram Ton (metric) to Carat Ton (metric) to Slug Ton (metric) to Troy Ounce Ton (metric) to Pennyweight Ton (metric) to Grain Ton (metric) to Dram Ton (metric) to Quintal Ton (US) to Kilogram Ton (US) to Gram Ton (US) to Milligram Ton (US) to Pound Ton (US) to Ounce Ton (US) to Stone Ton (US) to Ton (metric)Ton (US) to Ton (UK)