HomeCooking ConversionsHow Many Grams Are In An Ounce?

How Many Grams Are In An Ounce?

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There are 28.35 grams in one ounce. While American recipes use ounces, most countries use the metric system. This means that if you’re an American using a recipe from abroad (or vice versa), you’ll most likely need to convert between grams and ounces. 

Ounces & Grams Converter

Calculate how many grams are in an ounce (or vice versa) with this conversion calculator. Enter the amount, select which conversion you want, and then click convert.

What is an Ounce?

An ounce is also called a dry ounce or avoirdupois ounce. It is 1/16th of a pound and is abbreviated oz. A slice of bread weighs about one once. The best way to measure an ounce is with a scale.

The ounce is a traditional unit of measurement that dates all the way back to an Ancient Roman unit called the unica, meaning “twelfth part”. In England there was a combination of Roman and Anglo-Saxon units in the Middle Ages, which eventually evolved into the systems of measurements we use today.

The dry ounce used in the US is called the United States customary ounce, while in the United Kingdom its full name is the British imperial ounce; they are the same size. Although Britain was an early adopter of the ounce and spawned the imperial measurement system, it has followed its European neighbors and by 2000 had switched almost entirely to the metric system.

Apart from the United States, only two other countries still use ounces as their main unit of measurement – Liberia and Myanmar (also known as Burma). Everyone else has gone metric. 

What is a Gram?

The gram is a unit of mass adopted by the French in 1795 and is part of the metric system (officially called the International System of Units or SI). One gram is equal to one thousandth of a kilogram. A single raisin weighs about one gram. The abbreviation for gram is g.

Measuring in grams is more precise than measuring in ounces, and globally the gram is the most widely used unit of measurement when cooking with dry ingredients. The word gram comes from the French gramme, which originally derives from the Greek word gramma meaning “small weight”.

Grams are a pretty straightforward unit. Just don’t get your grams confused with your legendary sword from Norse mythology (which also goes by the name gram).

Unit Conversion

How Many Grams in an Ounce?

Illustration of grams and ounces weight

1 ounce equals 28.35 grams

So whether you want to know how many grams are in an ounce of herby butter or an ounce of gold, the answer is the same – 28.35 grams.

To make things easier you’ll find gram and ounce conversion charts for different weights below.

Grams to Ounces Conversion Chart

This chart converts ounces to grams.

OuncesGrams
½ oz14 g
1 oz28 g
2 oz57 g
3 oz85 g
4 oz113 g
6 oz170 g
8 oz227 g
10 oz283 g
16 oz454 g
32 oz907g
64 oz1814 g

Ounces to Grams Conversion Chart

This chart converts grams to ounces.

GramsOunces
10 g0.35 oz
20 g0.71 oz
30 g1.06 oz
40 g1.41 oz
50 g1.76 oz
100 g3.53 oz
150 g5.29 oz
200 g7.05 oz
300 g10.58 oz
400 g14.11 oz
500 g17.64 oz
1000 g (1kg)35.27 oz

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