How Many Grams Are in an Ounce of Gold?
At a Glance:
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- There are 31.1035 grams in a troy ounce of gold.
- Converting gold weights to troy ounces is an important skill for investors.
- This page will cover everything you need to know about how gold is measured and weighed.
How Many Grams Are in an Ounce of Gold?
Learning to convert between weights is an important skill for gold investors. Since the spot price of gold is quoted in troy ounces, converting from grams to troy ounces is a crucial step in determining the value of gold coins or bars. How many grams are in an ounce of gold? There are 31.1035 grams in one troy ounce of gold.
On this page, we’re covering everything investors need to know about converting between different weights of gold. Whether you stack grains, grams, troy ounces, or kilograms, we’ve got your back. By the end of this page, readers will have a solid understanding of how to convert between different gold weight units.
How to Convert Gold Weights
The most common weight used to measure gold coins and bars is the troy ounce. “Spot price” refers to the current value of a single troy ounce of a precious metal. Precious metal spot prices change constantly, but they’re almost always quoted in troy ounces. Luckily, it’s pretty easy to convert nonstandard measurements to troy ounces.
To convert between one measurement unit to another, you’ll need a conversion rate. Below, we’ll cover conversion rates for four common non-standard gold weight units:
- Grams
- Standard Ounces
- Grains
- Kilos
Grams to Troy Ounces of Gold
There are 31.1035 grams in a single troy ounce of gold. To convert from grams to ounces, multiply the weight in grams of your gold coin or bar by 31.1035. It is also possible to convert from troy ounces back to grams. To make this conversion, multiply the weight of a gold product in troy ounces by .0321507.
Converting between grams to troy ounces is important because it can give investors a better idea of how much their gold is worth. The current market value of gold is quoted in troy ounces, so converting from grams to troy ounce is necessary for investors who want to determine the melt value of their gold coin or bar.
Ounces to Troy Ounces of Gold
Troy ounces are the standard weight measurement unit used by gold dealers and buyers. A troy ounce actually weighs just under 10% more than a standard ounce. How many ounces are in a troy ounce of gold? There are 1.09714 standard ounces in a troy ounce of gold. To convert the weight of a gold coin or bar from standard ounces to troy ounces, multiply the weight in ounces of your gold product by .911458.
It is uncommon for gold dealers to list product weights in standard ounces – but it does happen occasionally. To get a more accurate estimate of the value of a gold product, convert standard ounces to troy ounces. If you want to figure out how many standard ounces are in your gold product, multiply its weight in troy ounces by 1.09714.
Grains of Gold to Ounces
Grains are generally the smallest measurement unit used to weigh gold. How many grains are in an ounce of gold? There are 480 grains in a troy ounce of gold. To determine the weight in troy ounces of a gold product, multiply its weight in grains by 480.
It is not very common for gold products to be listed by grain weight. Usually, the term “grain” refers to a very small ‘nugget’ of gold. Gold refiners often buy large quantities of gold grain in order to melt it down and create new products, such as coins or bars. Grains are even smaller than grams – it takes around 15.4 grains of gold to equal a single gram.
Some dealers sell 1 Grain Gold Bars. To find out the true value (and premium costs) of a grain gold bar, multiply its weight in grains by 480. Reference that number against the current spot price of gold, and you have its approximate melt value!
How Many Ounces in a Kilo of Gold?
Grains are the smallest unit of measurement generally used to describe gold, but kilos are the largest. Very few dealers ever sell gold bars weighing more than 1 kilo. Truthfully, most stackers will never be able to say they own a full kilo of gold. Because kilos are a nonstandard way to measure gold, it can be helpful to convert kilos to troy ounces.
There are 32.1507 troy ounces in a kilogram of gold bullion. To convert from kilograms to troy ounces, multiply the weight in kilograms of a gold bar by 32.1507. This formula can be especially helpful for gold investors who want to save money on precious metal premiums. Buying large gold bars is one of the cheapest ways to invest in gold, after all.
Gold Weight Unit Conversion Chart
Whether you’re buying a single grain of gold or several kilos, you’ll need to convert your purchase’s weight to troy ounces to figure out its current melt value. We covered the basics of how to convert between troy ounces and nonstandard units of measurement above. If you need a bit more help, we’ve also drawn up a simple conversion chart to help you figure out how many ounces are in your gold product.
How Are Gold Weights Measured?
Gold is sold in all sorts of different weights. 1, 5, 10, 25, 50, and 100 gram gold bars are especially common. Fractional gold products, or gold items weighing less than 1 troy ounce, are a great way for new investors to buy gold without overspending.
Precious metals also use a unique measurement unit known as the troy ounce. Troy ounces are almost never used to measure anything except precious metals and gems. For new traders, this can be a bit confusing. Let’s take a look at how gold is measured – and the history of the strange ‘troy ounce.’
What is a Troy Ounce of Gold?
A troy ounce refers to approximately 1.097 standard ounces. Troy ounces aren’t really used for anything except measuring the weight of precious metals. Despite not being particularly useful in any other context, understanding troy ounces is necessary for investors who want to start buying and selling gold.
The value of a gold product depends on several factors, but the most important is gold’s current spot price. Gold price charts display the current market value of 1 troy ounce of pure gold bullion. Troy ounces are the primary measurement unit used to describe the weight of a gold product. This means that you can’t really understand how much your gold coin/bar is worth unless you first convert its weight to the standardized troy ounce measurement unit.
Why is Gold Weighed in Troy Ounces?
Why does the gold industry use troy ounces? The term “troy ounce” dates back centuries to a massive French town called Troyes. During the 16th century, Troyes was a major trade center in Europe where gold and other precious metals were exchanged. Over time, traders established a standard unit of measurement to quote the weight of precious metals. Hence the name: troy ounces!
The unit of measurement stuck around, and we still use it in the 21st century. Gold values are almost always quoted in troy ounces. For new investors, this might be a bit confusing, since most of us aren’t used to measuring things using troy ounces.
Ounces Vs. Troy Ounces
Ounces and troy ounces are not the same. The “ounces” we use when cooking are usually called standard ounces to differentiate the form of measurement from the troy ounce. Converting between ounces and troy ounces isn’t very difficult. There are 1.09714 troy ounces in an ounce of gold. To get the approximate number of troy ounces in a gold product, multiply its weight in standard ounces by 1.09714.
How to Measure Gold
If you plan on investing in gold for the long haul, it might be worth investing in a jewelry scale. Jewelry scales are meant to be extremely accurate, and they’re considered a standard tool for investors who want to verify the weight of their gold coins and bars. We generally recommend first converting your gold products to troy ounces. Since the spot price of gold is always quoted in troy ounces, this should give you a better idea of the current value of your coin or bar.
Frequently Asked Questions: Converting Gold Weight Units
Below, we’re answering some of the most commonly asked questions we receive about how to convert from one gold measurement unit to another.
Q: How Many Grams Are In An Ounce of Gold?
A: One troy ounce of gold contains approximately 31.1035 grams. To quickly convert between grams to troy ounces, just divide the number of grams in a gold bar/coin by 31.1035. Converting between troy ounces to gram is a similar process – you’ll need to multiply the weight of your gold product in troy ounces by 31.1035 to determine how many grams of gold it contains.
Q: Why Is Gold Measured In Troy Ounces?
A: The troy measurement system is derived (and named after) Troyes, a French town that was a global trading hub in the 16th century. To make it easier to trade precious metals, locals in Troyes established a standardized weight unit – the troy ounce!
Q: Why Convert From Grams to Troy Ounces?
A: Investors should always convert the weight of their gold bars, coins or jewelry to troy ounces in order to properly determine their value. The spot price of gold is quoted in troy ounces, so converting to this unit helps investors better understand how much their gold is worth.
Q: What Is the Best Weight of Gold to Buy?
A: In most cases, large gold products are better investments than smaller coins and bars. Because premiums increase as the size of a gold item decreases, investors can save money by buying larger quantities of gold at one time.
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About The Author
Michael Roets
With over six years of experience reporting on precious metals, Michael Roets covers market news, buying guides, and commentary for Hero Bullion.