A 16 oz bag of hazelnuts holds about 3.2 cups. Whole hazelnuts weigh about 142 g per cup — the same as almonds and peanuts — so a pound bag gives just over three cups. Three cups is enough for a chocolate hazelnut spread, a cake and a praline, and the 16 oz bag is the size most recipes assume. The skins are the complication: hazelnuts are usually sold with their papery skins on, and removing them changes the weight slightly.
How many cups in a 16 oz bag?
A 16 oz bag of hazelnuts holds about 3.2 cups (454 g ÷ 142 g per cup).
| Amount | Cups | Grams | Tablespoons |
|---|---|---|---|
| Full 16 oz bag | 3.2 | 454 | 51 |
| Half 16 oz bag | 1.6 | 227 | 26 |
| Quarter 16 oz bag | 0.8 | 113.5 | 13 |
| 1 tablespoon | 0.06 | 8.88 | 1 |
The table gives the full package, half a package and a quarter of a package, plus a single tablespoon, so you can scale the answer to whatever your recipe asks for. If your packet is a different size from the one on this page, the same per-cup figure still applies — divide your packet's weight by the grams per cup, or its volume by 236.6 ml per cup, and you have your answer.
Worked examples
Chocolate hazelnut spread that needs a cup and a half
A jar of homemade chocolate hazelnut spread takes about 1 and a half cups of hazelnuts — 213 g — roasted, skinned and blended with 1/2 cup of cocoa, 1/2 cup of sugar and 2 tablespoons of oil. A cup and a half is just under half the bag, leaving about 1.7 cups for a cake or a praline. Roast the hazelnuts at 180°C for ten minutes, then rub them in a tea towel: the skins come off in flakes. Blend until completely smooth — a gritty spread is under-blended, not short on nuts.
Hazelnut cake that needs a cup
A hazelnut cake takes about 1 cup of hazelnuts — 142 g — ground finely and folded into 3 eggs, 3/4 cup of sugar and 1/2 cup of flour. One cup is just under a third of the bag, so a single bag makes about three cakes. Grind the hazelnuts yourself for the best flavour: pre-ground hazelnuts lose their aroma quickly, while whole nuts ground fresh taste rich and toasty. Weigh the nuts before grinding, since a cup of ground hazelnuts weighs differently from a cup of whole ones.
Praline that needs half a cup
A batch of hazelnut praline takes about 1/2 cup of hazelnuts — 71 g — stirred into a caramel made from 1 cup of sugar and 2 tablespoons of water, then cooled and ground to a paste or a powder. Half a cup is about a sixth of the bag, so one bag makes about six batches of praline. Toast the hazelnuts before adding them to the caramel: raw hazelnuts taste flat against the burnt sugar, while toasted ones hold their own.
How the figure was measured
The weight figure on this page comes from King Arthur Baking: hazelnuts weighs 142 g per cup, measured spooned and levelled, and that figure carries high confidence in CookScale's 120-ingredient table. Every cup-based result on this page is approximate, because a cup measures volume and the weight depends on how the ingredient settles, how it was measured, and how fresh it is. When the amount matters — a cake, a cheesecake, a sauce that must set — weigh the ingredient on a kitchen scale instead of trusting the cup. Package sizes vary by brand and region, so check the weight printed on your own packet before planning a recipe around this page.
How to measure it
Nuts are spooned into a dry cup measure and levelled, never packed — pressing them down crushes the pieces and fits far more weight into the same cup. Whole nuts, halves and chopped pieces all measure differently in the same cup: a cup of whole almonds weighs more than a cup of chopped almonds, because the pieces settle differently and the air gaps change. That is why the weight figures on this page are the anchor, not the cup. If a recipe says '1 cup chopped walnuts', chop first and then measure; if it says '1 cup walnuts, chopped', measure first and then chop. The difference is real — about a quarter of a cup in a batch of brownies. When it matters, weigh: 142 g of almonds is 142 g however you chop them.
Practical guidance
Nuts go rancid faster than almost anything else in the pantry because their oils are exposed to air. A bag opened in January and still sitting in a warm cupboard in June will taste stale and a little bitter, and no recipe can hide it. Store opened nuts in a sealed jar in the fridge, or in the freezer for months — they thaw in minutes and toast straight from frozen. Taste one before baking with an old bag: fresh nuts taste sweet and clean, stale ones taste like old oil. Toasting revives nuts that are merely flat, but it cannot rescue ones that have turned. Buy smaller bags more often rather than one huge bag that sits open.
Three cups plus a little is the figure, and the skins are the practical detail: a cup measured with skins on and a cup measured after skinning differ by a few grams, so measure before you skin and the figure holds. The bag size is the other variable — 8 oz bags hold about 1.6 cups, 12 oz bags about 2.4 cups — and the same 142 g per cup applies throughout. Buy whole hazelnuts rather than chopped when you can: whole nuts keep longer, and you can grind or chop them to the size your recipe needs. And roast before you bake with them — raw hazelnuts taste flat in a cake, while roasted ones are the flavour the recipe was written around.
Frequently asked questions
How many tablespoons are in a 16 oz bag of hazelnuts?
There are about 51 tablespoons in a 16 oz bag of hazelnuts, because the bag holds about 3.2 cups and there are 16 tablespoons in a cup. A tablespoon of whole hazelnuts weighs about 8.9 g. For a salad or a cake topping, 2 tablespoons per serving is the usual amount, so a bag covers roughly two dozen servings.
Do I need to remove the skins from hazelnuts?
For most recipes, yes — the papery skins are bitter and they darken the colour of a cake or a spread. Roast the hazelnuts at 180°C for ten minutes, then rub them in a tea towel and the skins flake off. A few stubborn skins do not matter. Removing the skins loses a small amount of weight, about 2 to 3 percent, so measure before skinning if the recipe gives cups.
Can I substitute hazelnuts for almonds cup-for-cup?
Yes. Hazelnuts and almonds both weigh about 142 g per cup, so a cup-for-cup swap is exact by weight as well as by volume. The flavour is different — hazelnuts are richer and more assertive, almonds are milder — but in a cake, a granola or a brittle the measure does not change. The same applies to peanuts, which also weigh 142 g per cup.
How long does an opened bag of hazelnuts last?
An opened bag of hazelnuts lasts about three months in a cool cupboard and six months in the fridge, and up to a year in the freezer. Store them in a sealed jar. Taste one before baking: fresh hazelnuts taste sweet and buttery, while stale ones taste bitter and flat. The skins turn bitter first, so a hazelnut that tastes bitter may only need skinning.
What is the difference between hazelnuts and filberts?
None — filbert is simply an older name for the hazelnut, still used in some regions. The nuts are the same, the weight per cup is the same at 142 g, and recipes that call for filberts mean hazelnuts. If an old recipe calls for a cup of filberts, use a cup of hazelnuts and change nothing else.