A 10 oz bag of pistachios holds about 2.4 cups. Shelled pistachios weigh about 120 g per cup, so 283 g divides to 2.4 cups — enough for a baklava, a pesto and a batch of ice cream. The 10 oz bag is the common size for shelled pistachios, and it is worth noting the figure is for shelled nuts: a bag of pistachios in the shell yields roughly half the weight in edible kernels.
How many cups in a 10 oz bag?
A 10 oz bag of pistachios holds about 2.4 cups (283 g ÷ 120 g per cup).
| Amount | Cups | Grams | Tablespoons |
|---|---|---|---|
| Full 10 oz bag | 2.4 | 283 | 38 |
| Half 10 oz bag | 1.2 | 141.5 | 19 |
| Quarter 10 oz bag | 0.6 | 70.75 | 10 |
| 1 tablespoon | 0.06 | 7.5 | 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
Baklava that needs a cup and a half
A tray of baklava takes about 1 and a half cups of pistachios — 180 g — finely chopped and layered with 1 cup of walnuts between sheets of filo, then soaked in a syrup of 1 cup of sugar and 1/2 cup of honey. A cup and a half is nearly two-thirds of the bag, leaving about a cup for a pesto or an ice cream. Chop the pistachios finely but not to a powder: the filling should have texture, and over-ground pistachios turn to paste under the filo.
Pistachio pesto that needs a cup
A jar of pistachio pesto takes about 1 cup of pistachios — 120 g — blended with 2 cups of basil, 1/2 cup of parmesan and 1/3 cup of olive oil. One cup is just over 40 percent of the bag, so a single bag makes about two and a half jars of pesto. Pistachios give a richer, sweeter pesto than pine nuts, and their green colour is the reason the pesto looks so vivid. Toast them lightly first for depth, but measure before toasting.
Ice cream topping that needs half a cup
A batch of ice cream takes about 1/2 cup of pistachios — 60 g — roughly chopped and folded through the churned base, or scattered over the top as a topping. Half a cup is about a fifth of the bag, so one bag covers about five batches. Salted pistachios work well here: the salt sharpens the sweetness of the ice cream. Chop them coarsely so the pieces stay distinct in the frozen cream rather than disappearing into it.
How the figure was measured
The weight figure on this page comes from King Arthur Baking: pistachios weighs 120 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.
Two and a half cups is the working figure, and the shelled-versus-in-shell question is the one that matters: if your bag is in the shell, the kernels inside weigh roughly half the bag's weight, so a 10 oz bag of in-shell pistachios yields only about 1.2 cups of kernels. Check the label before you start, and buy shelled pistachios for baking — shelling a cup of pistachios by hand takes twenty minutes. The bag size varies too: 8 oz bags hold about 1.9 cups and 16 oz bags about 3.8 cups, and the same 120 g per cup applies to shelled nuts throughout.
Frequently asked questions
How many tablespoons are in a 10 oz bag of pistachios?
There are about 38 tablespoons in a 10 oz bag of pistachios, because the bag holds about 2.4 cups and there are 16 tablespoons in a cup. A tablespoon of shelled pistachios weighs about 7.5 g. For a salad or an ice cream topping, 2 tablespoons per serving is the usual amount, so a bag covers roughly eighteen servings.
Are pistachios in the shell the same as shelled pistachios?
No. A cup of pistachios in the shell is mostly shell — the kernels inside weigh far less than the volume suggests. The figure on this page, 120 g per cup, is for shelled pistachios only. A pound of in-shell pistachios yields roughly half a pound of kernels, so a recipe calling for a cup of shelled pistachios needs about two cups of in-shell nuts, shelled by hand.
Can I substitute pistachios for almonds cup-for-cup?
Not by weight: a cup of pistachios weighs about 120 g while a cup of almonds weighs about 142 g, so a cup-for-cup swap gives about 15 percent less weight. In a topping or a salad the difference does not matter, but in a cake or a pesto where the nut provides structure, weigh the substitute — 120 g of pistachios for every 120 g the recipe expects, not a cup for a cup.
How long does an opened bag of pistachios last?
An opened bag of pistachios lasts about three months in a cool cupboard and six months in the fridge. Store them in a sealed jar, not the open bag. Salted pistachios keep slightly longer than unsalted. Taste one before baking: fresh pistachios taste sweet and rich, while stale ones taste flat and oily, and no amount of sugar in a baklava hides it.
Why are pistachios so expensive compared to other nuts?
Pistachios are slow-growing, labour-intensive to harvest, and mostly grown in a few regions, which keeps the price high. They are also usually sold shelled for cooking, and shelling adds cost. That is why the 10 oz bag is the common size — a pound bag of shelled pistachios is a significant purchase — and why recipes use them in smaller amounts than walnuts or peanuts.