Ounces To Grams | How Many Grams In An Ounce

Mar 23, 2023 2:07 PM

How many grams are there in an ounce? Try out Calculatorful's ounces to grams converter to find out the answer and read our article for more understanding of the ounce and the gram as two units of weight.

Gram from a base unit to a unit of weight commonly used in the kitchen

The Gram, also gramme, symbol “g”, is a unit of mass or weight in the metric system. Originally one gram was defined as equal to the mass of one cubic centimeter of pure water at 4 °C (39.2 °F) or a milliliter of pure water. Gram used to be a fundamental unit of mass together with centimeters and seconds. In 1960, the kilogram officially replaced the gram as a base unit, and a gram is now defined as one thousandth (1/1000 of a kilogram). Gram, however, is still widely used to indicate the weight of ingredients in food or cooking recipes. It is even found on labels of products from the USA, where the imperial system is adopted. To make it easier to imagine how heavy a gram is, you can think of the weight of a paperclip.

Ounce and what objects are one ounce heavy?

The ounce, or avoirdupois ounce (abbreviated oz),  is a unit for measuring weight in the United States customary and British imperial systems of measurement, and one ounce is defined as one sixteenth (1/16) of a pound (avoirdupois) or 28.35 grams. The unit is mainly used in the United States to label foods, postal items, etc., but it is sometimes also used in some other English-speaking countries. 

How to Convert Ounces to Grams?

Since both are units of mass, it’s quite simple to do the conversion from grams to ounces. We already know that 1 oz = 28.3495 g. Then if you want to know the weight in ounces, just multiply the grams by  28.3495 or 28.35 for an approximate result.  

grams = ounces × 28.349523

Let’s take an example. You need 20 oz of flour to make a cake, but unluckily your scale measures in grams. Then you have to do the conversion. 

20 x 28.3495 = 566.990463 g

The result is approximately 566.99 g. That’s how much flour you need for your cake. 

It's just a single conversion. If you have to do a massive number of such conversions, using such a formula does not sound attractive. Calculatorful's ounces to grams converter can help you to solve the problem of saving time because it doesn't require any mental effort and you can get the answer in less than 1 second. You only need to type the value of weight in ounces and the result in grams will be shown immediately. 

You can find out more similar time-saving converters on Calculatorful including Lbs To Kg, Grams To Cups, Grams To Pounds, Pounds To Grams, and a lot more.

The connection from ounce (oz) to gram (g)

Ounces and Grams are the units of mass, and they are commonly used for weighting the total mass of an object such as food, postal items and many more. But as gram is more used as it is a part of the metric system, thus gram is widely used around the world in comparison to ounce. Therefore, you will see ounce to gram, and sometime the other way around, are converted between one another.

Here is the description of the connection to help you understand the conversion from ounce to gram and vice versa:

1 ounce = 28,35 g


1 gram = 0,035274 oz

Differences between ounce (oz) and gram (g)

As ounce and gram are both the units of weight, but they are certainly not similar. And here are few points that could help you differentiate them:

  1. Ounce (oz) is an imperial unit to weight mass >< Gram (g) is a metric unit to weight mass
  2. Even though ounce and gram are used widely, but Gram is the more commonly known and used around the world
  3. 1 ounce = 28,35g but 1 gram = 0,035274 oz 

Ounce-to-Gram Conversion Table

Ounce (oz)

Gram (g)

1 oz

28.35 g

5 oz

141.75 g

10 oz

283.5 g

15 oz

425.24 g

20 oz

566.99 g

25 oz

708.74 g

30 oz

850.49 g

35 oz

992.23 g

40 oz

1,134 g 

45 oz

1,275.73 g

50 oz

1,417.48 g


Which countries use ounces?

Officially, there are 3 countries using ounces including the USA, Myanmar, and Liberia.

Is one pound of gold different from one pound of flour?

Flour is measured in avoirdupois ounces so 1 oz of flour is 28.349523125 g while gold is measured in 'troy ounces', so 1 oz of gold is 31.1034768 g.

How many grams are in an ounce?

There are 28.35 g in an ounce.

How many ounces in a gram?

1 gram equals 0.035274 oz


This Calculatorful's ounces to grams converter provides users with a time-saving tool to convert ounces, an imperial/customary unit, to grams, a metric unit. Further useful information about the ounce and the gram can also be found in the article.




Provide ounce (oz) number to convert to gram (g).




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