16 Ounces in Grams
16 oz is 453.6 g. Sixteen ounces is one pound, and in grams it is 453.6 g, which is the definition that connects the imperial and metric weight systems. It matters because recipes, packets and scales all switch between pounds and grams, and a pound of flour, sugar or butter is a quantity every cook handles. This page gives the exact figure and the examples that show a pound working in real recipes.
Why this conversion exists
Millilitres, cups, tablespoons, teaspoons, ounces and grams are all units for the same things, volume or weight, and the conversion between two units of the same kind is exact. One US cup is 236.59 ml, one tablespoon is 14.79 ml, one teaspoon is 4.93 ml, one ounce is 28.35 g and one pound is 453.59 g, and those definitions do not change between sources. The confusion comes from the other system: the metric cup is 250 ml, the metric tablespoon is 15 ml and the imperial pint is 568 ml, so a recipe's origin decides which cup it means. This page uses the US customary figures throughout, because that is the system American recipes are written in, and it says so wherever the metric figure differs. The tables below give the conversion for the amounts recipes actually ask for, and the worked examples show it in the dishes where it actually appears.
16 Ounces in Grams conversion table
| Ounces | Grams |
|---|---|
| 1 oz | 28.3 g |
| 2 oz | 56.7 g |
| 4 oz | 113.4 g |
| 8 oz | 226.8 g |
| 12 oz | 340.2 g |
| 16 oz | 453.6 g |
| 24 oz | 680.4 g |
| 32 oz | 907.2 g |
The table covers the amounts recipes actually ask for. One ounce is 28.3 grams, and every row is that factor multiplied by the amount in the first column, so the table is exact to the rounding shown. Where the conversion is exact, like 2 cups to 1 pint, the table says so in whole numbers; where it is rounded, like 500 ml to 2.11 cups, the unrounded value is close enough that the difference is smaller than the error in any cup measure.
The reverse conversion
The table above converts in the direction this page is about. The table below converts back, so a recipe written in the other unit converts just as easily, and the two tables together cover every direction a cook is likely to need.
| Grams | Ounces |
|---|---|
| 50 g | 1.76 oz |
| 100 g | 3.53 oz |
| 200 g | 7.05 oz |
| 500 g | 17.64 oz |
Worked examples
Chocolate ganache calling for 16 oz
A chocolate ganache recipe that calls for 16 oz needs 453.6 g. Ganache is a ratio of chocolate to cream by weight, and the chocolate is usually weighed in ounces, so the gram conversion is the step that makes the ratio work. Weigh the ingredient straight into the mixing bowl when you can, because every transfer loses a little of it. That is the figure to measure: 16 oz in the units the recipe uses, or 453.6 g in the units your jug or scale shows. Because the conversion is exact, the only error that can creep in is the measuring itself, so the tool matters more than the arithmetic. A recipe that calls for 16 oz and gets 453.6 g will behave exactly as written, and a recipe that gets a rounded figure will behave almost exactly as written, which is close enough for cooking and usually close enough for baking too.
Cream cheese frosting calling for 32 oz
A cream cheese frosting recipe that calls for 32 oz needs 907.2 g. Frosting is built on blocks of cream cheese sold by the ounce, and the weight sets the thickness of the finished frosting, so the conversion matters to the spread. Put the bowl on the scale, press tare to zero it, and only then add the ingredient, so the bowl's weight is not part of the reading. That is the figure to measure: 32 oz in the units the recipe uses, or 907.2 g in the units your jug or scale shows. Because the conversion is exact, the only error that can creep in is the measuring itself, so the tool matters more than the arithmetic. A recipe that calls for 32 oz and gets 907.2 g will behave exactly as written, and a recipe that gets a rounded figure will behave almost exactly as written, which is close enough for cooking and usually close enough for baking too.
Toasted nuts for a salad calling for 8 oz
A toasted nuts for a salad recipe that calls for 8 oz needs 226.8 g. Nuts are sold by weight and measured by the cup in recipes, and the two never agree without a conversion, because a cup of nuts weighs far less than a cup of flour. Use grams for anything under a pound, because grams are finer than ounces and the target is easier to hit exactly. That is the figure to measure: 8 oz in the units the recipe uses, or 226.8 g in the units your jug or scale shows. Because the conversion is exact, the only error that can creep in is the measuring itself, so the tool matters more than the arithmetic. A recipe that calls for 8 oz and gets 226.8 g will behave exactly as written, and a recipe that gets a rounded figure will behave almost exactly as written, which is close enough for cooking and usually close enough for baking too.
Scaling the recipe up and down
Scaling works the same way in both directions, because the conversion is exact. Double the recipe and 16 oz becomes 32 oz, which is 907.2 g. Halve it and you need 8 oz, which is 226.8 g. When you scale, always do the arithmetic before you start measuring, and scale by the same factor in both units, because scaling mid-recipe is how errors creep in. Remember that a US cup is 236.59 ml while a metric cup is 250 ml: if the recipe comes from Australia, New Zealand or South Africa, one cup means 250 ml, and the figures on this page need adjusting by that 6 percent. Check which cup your recipe uses before you convert, and when the recipe really matters, weigh the ingredient on a scale, because grams do not change with the cup.
How the conversion is defined
The figures on this page are exact standard conversions, not measured densities, so there is no dispute to report and no laboratory to cite. One US customary cup is 236.59 ml by definition, one tablespoon is 14.79 ml, one teaspoon is 4.93 ml, one ounce is 28.35 g and one pound is 453.59 g. These are definitions of the units themselves, so they do not vary between sources the way ingredient densities do. The only judgement on this page is rounding: the tables give one or two decimal places, and the headline answers are rounded to the figure a cook can actually use. Where a conversion is exact, like 2 cups to 1 pint, the table says so. Where it is rounded, like 500 ml to 2.11 cups, the unrounded value is close enough that the difference is smaller than the error in any cup measure.
Weight ounces versus fluid ounces: the trap to avoid
The ounce is two different units with the same name. A weight ounce measures mass, and one of them is 28.35 g. A fluid ounce measures volume, and one of them is 29.57 ml. They are only equal for water, which weighs 28.35 g per fluid ounce by a happy coincidence of the two systems. For anything else they diverge: eight fluid ounces of flour is one cup, which weighs 120 g, while eight weight ounces of flour is 226.8 g, which is about 1.9 cups. Recipes, packets and jugs all mix the two, so the rule is to check the context: a jug measures fluid ounces, a scale measures weight ounces, and a recipe that says 8 oz of flour means weight, while a recipe that says 8 fl oz of milk means volume. When in doubt, convert by weight, because the scale cannot be confused about which ounce it means.
Common mistakes
- Confusing weight ounces with fluid ounces. A weight ounce measures mass and a fluid ounce measures volume, and they are only equal for water. Eight weight ounces of flour is about 1.9 cups, while eight fluid ounces is exactly 1 cup, and mixing them up is the commonest conversion error in the kitchen.
- Weighing in a container without taring. A bowl or jug adds its own weight to the reading. Put the container on the scale, press tare to zero it, and only then add the ingredient.
- Trusting a packet weight for a cup measure. A packet that says 8 oz contains 8 oz by weight, but the cups in it depend on the ingredient. Use the weight on the scale, not the volume in the cup, when the recipe gives grams.
- Rounding ounces to the nearest whole number too early. Rounding 3.53 oz to 4 oz adds 13 g, which is a real error in a small recipe. Keep one decimal place until the final measurement, then round.
Practical guidance
Weighing is the most accurate way to measure anything in the kitchen, and the practical habit that makes it work is taring the scale: put the empty bowl on the scale, press tare to zero it, and only then add the ingredient. Without that step, the bowl's weight is part of the reading, and the error is the weight of the bowl. Use grams for anything under a pound, because grams are finer than ounces and the reading is easier to hit exactly: 100 g is a cleaner target than 3.53 oz. Keep the scale on a flat, stable surface, away from the edge of the counter, and away from steam, because a wobbling scale and a steaming pot both move the reading. When a recipe gives ounces and your scale reads grams, use the table on this page rather than converting in your head, because the arithmetic is where errors happen. And remember that a weight ounce and a fluid ounce are different units: a scale measures weight ounces, a jug measures fluid ounces, and they only agree for water.
Frequently asked questions
How many 16 oz are in double the recipe?
Double the recipe and 16 oz becomes 32 oz, which is 907.2 g. Halve it and you need 8 oz, which is 226.8 g. When you scale a recipe, scale by the same factor in both units, and do the arithmetic before you start measuring, because scaling mid-recipe is how errors creep in.
Why do American and metric recipes disagree about this amount?
Because the two systems define their units differently: the US cup is 236.59 ml while the metric cup is 250 ml, the US tablespoon is 14.79 ml while the metric tablespoon is 15 ml, and the US pint is 473 ml while the imperial pint is 568 ml. A recipe from the United States almost always means the US figures, while a recipe from Australia or New Zealand usually means the metric ones. Check the recipe's origin, and its other units, before converting.
How many grams is 16 oz?
16 oz is 453.6 g. That is the headline figure for this page, and the table above lists the same conversion for the amounts around it, from the smallest to the largest. The figure is exact where the conversion is a matter of definition, and rounded to one or two decimal places where it is not, so the value you use in the kitchen is the value in the table.
Is 16 oz exactly 453.6 g?
Yes, to the precision given on this page. The conversion is defined by the units themselves: one US cup is 236.59 ml, one tablespoon is 14.79 ml, one teaspoon is 4.93 ml, one ounce is 28.35 g and one pound is 453.59 g. The only judgement is rounding, and the tables on this page round to one or two decimal places, which is finer than any cup or spoon measure can achieve in practice.
How do I measure 16 oz without the right tool?
If the right cup or jug is missing, use the other column of the table: a volume can be measured in a jug, a weight can be measured on a scale, and a spoon measure can be counted out with the spoon set. For a liquid, pour into a jug on a flat surface and read the meniscus at eye level. For a dry ingredient, spoon it into the cup and level it off. And for anything that matters, a kitchen scale removes the problem entirely, because the gram figure does not depend on which cups you own.
Related conversions
Use the ounces to grams converter, pounds to grams converter, weight converter for instant answers, or browse the units hub for every conversion on this site. Nearby pages in this series: 8 ounces in grams, 8 ounces in cups, 4 ounces in cups. See also our disclaimer about approximate conversions and about CookScale for how our figures are sourced.