Convert ounces to grams (2024)

Convert ounces to grams (1)

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Definition: An ounce (symbol: oz) is a unit of mass in the imperial and US customary systems of measurement. The avoirdupois ounce (the common ounce) is defined as exactly 28.349523125 grams and is equivalent to one sixteenth of an avoirdupois pound.

History/origin: The origin of the term ounce stems from the Roman uncia, which means a "twelfth part," and the use of a standardized copper bar which defined both the Roman pound and foot. The copper bar was divided into twelve equal parts, called unciae. This relationship between the Roman pound and foot eventually contributed to the uncia being the basis of the modern inch as well as the common ounce. The ounce has been used as a standard of mass throughout history for different applications and with different definitions. Examples include the Dutch metric ounce (100g), French ounce (30.59g), and the Spanish ounce (28.75g), among others. The current definition of the ounce, the international avoirdupois ounce was adopted in 1959.

Current use: The ounce is still a standard unit of mass in the US customary system of measurement. It is mostly used in the United States for measuring packaged food products, food portions, and postal items, among other things. The ounce is still used in some other countries around the world that have roots in British history and culture. Due to metrication, the United Kingdom (UK) no longer officially uses the ounce. It is however, still used in some settings in the UK, such as restaurants.


Definition: A gram (symbol: g) is a unit of mass in the International System of Units (SI). The definition of the gram is based on the kilogram, where a gram is one thousandth of a kilogram, the SI base unit of mass. Since 2019, the definition of the kilogram is no longer based on the international prototype, and rather is based on Planck's constant, h, along with the new definitions of the second and the meter.

History/origin: Originally, a gram was defined as the absolute weight of pure water in a cubic centimeter at the temperature of melting ice (later 4 °C). The gram used to be a fundamental unit of mass as part of centimeter-gram-second systems of units up until the widespread adoption of SI, which uses kilograms as the base unit of mass. The gram was later redefined as one thousandth of a kilogram, the SI (meter-kilogram-second system of units) base unit of mass.

Current use: The gram is widely used in every life as well as scientific contexts. For example, the gram is typically used to measure non-liquid ingredients used for cooking or groceries. Standards on the nutrition labels of food products often require the relative contents to be stated per 100 grams of the product.

Ounce to Gram Conversion Table

Ounce [oz]Gram [g]
0.01 oz0.2834952313 g
0.1 oz2.8349523125 g
1 oz28.349523125 g
2 oz56.69904625 g
3 oz85.048569375 g
5 oz141.747615625 g
10 oz283.49523125 g
20 oz566.9904625 g
50 oz1417.47615625 g
100 oz2834.9523125 g
1000 oz28349.523125 g

How to Convert Ounce to Gram

1 oz = 28.349523125 g
1 g = 0.0352739619 oz

Example: convert 15 oz to g:
15 oz = 15 × 28.349523125 g = 425.242846875 g

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Convert ounces to grams (2024)


How much does 1 oz weigh in grams? ›

There are 28 grams in an ounce. This unit conversion can be expressed as 28 grams = 1 ounce or 28 g = 1 oz. However you write it, there are 28 grams in one avoirdupois ounce. In a more precise conversion, 1 ounce is equal to approximately 28.3495 grams (or 28.35 g).

Is 4 oz the same as 100g? ›

Some commonly found recipe quantities converted from grams to ounces. To recap, 100 grams is 3.5 ounces!

What would 8 oz be in grams? ›

8 oz is equal to 226.8 grams.

How do you convert dry ounces to grams? ›

1 ounce is approximately equal to 28.3495 grams. Ounce is one of the imperial units of mass, while gram is one of the metric units of mass. So to convert from ounces to grams, we need to multiply the ounce-value by 28.3495.

What weighs 200 grams exactly? ›

200cc of water (1/5th liter) weighs exactly 200 grams. You could sub juice or milk without fudging accuracy much, but not oil. 40 American nickels weighs 200 grams.

How do you convert grams to ounces? ›

Switching from grams to ounces is easy. Use the conversion factor of 1 gram equal to 0.03527 ounces. For example, 50 grams would convert to 50g x 0.03527 = 1.7635 ounces. Using a digital scale equipped for conversions is another straightforward method.

Does 30 grams equal 1 ounce? ›

One ounce is equal to 28 grams. That is the simple answer you will need to determine how many grams are in an ounce.

What household item weighs exactly 100 grams? ›

What weights 100 grams around the house? 100 grams (a mass) weighs about 4 ounces which is approx. equal to the weight of 1/2 cup of water or a stick of butter or 2 large eggs.

What is 1 lb equal to in grams? ›

One pound is equal to 453.592 grams.

What is 1 cup of butter in grams? ›

1/2 cup of butter is 115g
Butter by CupsWeight (Grams)Volume (mL)
1 cup227 g250 mL
2/3 cup151 g160 mL
1/2 cup115 g125 mL
1/3 cup76 g80 mL
5 more rows

How many grams is 1 cup? ›

According to the metric system, there are 250 grams in 1 cup. However, it may vary depending on the type of ingredient you're putting in your measuring cup — you'll need to find the density of your ingredients if you're looking for the proper conversion factor.

What weight is 1 oz in grams? ›

1 ounce (oz) is equal to 28.34952 grams(g).

How many dry ounces is 100 grams? ›

100 grams is approximately equal to 3.53 ounces.

How much is 10z in grams? ›

Ounces to Grams conversion table
Ounces (oz)Grams (g)Kilograms+Grams (kg+g)
10 oz283.50 g0 kg 283.50 g
20 oz566.99 g0 kg 566.99 g
30 oz850.49 g0 kg 850.49 g
40 oz1133.98 g1 kg 133.98 g
18 more rows

How much does 1 oz of water weigh? ›

How much does a fluid ounce of water weigh? One US fluid ounce of water weighs approx. 29.57 g. One Imperial fluid ounce of water weighs about 1 oz.

Is 50 grams or 2 ounces? ›

Grams to Ounces conversion table
Grams (g)Ounces (oz)
50 g1.7637 oz
60 g2.1164 oz
70 g2.4692 oz
80 g2.8219 oz
17 more rows

How much does an oz weigh on a scale? ›

ounce, unit of weight in the avoirdupois system, equal to 1/16 pound (437 1/2 grains), and in the troy and apothecaries' systems, equal to 480 grains, or 1/12 pound. The avoirdupois ounce is equal to 28.35 grams and the troy and apothecaries' ounce to 31.103 grams.

How can I measure an ounce without a scale? ›

Can you measure ounces without a scale? You don't have to use a scale to measure fluid ounces. Instead, you can measure fluid ounces with a measuring cup. A one-cup measuring cup holds 8 fluid ounces, so 1 ounce would be 1/8 of a cup.

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