Hazelnuts (Whole):
Grams to Cups
One cup of whole hazelnuts weighs 135 grams. With their rich, sweet flavor and satisfying crunch, hazelnuts are central to European baking — from Italian torta di nocciole to German Haselnusskuchen and the beloved hazelnut-chocolate combination in gianduja.
Convert Hazelnuts (Whole)
1 cup = 135 grams
= — grams
= — cups
Quick reference
Measurement Table
| Cups | Grams | Ounces |
|---|---|---|
| ⅛ cup | 17 g | 0.60 oz |
| ¼ cup | 34 g | 1.20 oz |
| ⅓ cup | 45 g | 1.59 oz |
| ½ cup | 68 g | 2.40 oz |
| ⅔ cup | 90 g | 3.17 oz |
| ¾ cup | 101 g | 3.56 oz |
| 1 cup | 135 g | 4.76 oz |
| 1¼ cups | 169 g | 5.96 oz |
| 1½ cups | 203 g | 7.16 oz |
| 2 cups | 270 g | 9.52 oz |
| 3 cups | 405 g | 14.29 oz |
About Hazelnuts (Whole)
Whole hazelnuts weigh more per cup than most other nuts because of their dense, spherical shape, which allows them to pack relatively efficiently into a measuring cup despite leaving air gaps. For recipes that call for chopped or ground hazelnuts, the weight per cup will differ significantly — ground hazelnuts pack even more tightly.
Roasting hazelnuts before using them in baking dramatically improves their flavor by developing Maillard compounds that create a deeper, more complex nuttiness. To roast: spread on a baking sheet at 175°C (350°F) for 10–15 minutes until the skins crack and the nuts are golden. The skins can then be rubbed off with a clean kitchen towel.
For hazelnut flour or meal (used in French financiers, macarons, and tortes), whole hazelnuts are ground in a food processor until fine but not pasty. One cup of whole hazelnuts (135 g) yields slightly more than 1 cup of hazelnut meal due to the increased surface area.
Hazelnuts have a high fat content that makes them prone to rancidity. Store raw or roasted hazelnuts in an airtight container in the refrigerator or freezer to extend their shelf life significantly.
Tips for measuring Hazelnuts (Whole)
- Roast before use — the flavor improvement is dramatic and worth the extra step.
- Rub in a kitchen towel while hot to remove the bitter skins easily.
- Store in the fridge or freezer: high fat content causes rapid rancidity at room temp.
- Weigh chopped hazelnuts separately — density increases significantly when chopped.
Common mistakes
- Using unroasted hazelnuts when roasted are called for — the flavor difference is substantial.
- Skipping the skin removal — hazelnut skins are bitter and can overpower delicate recipes.
- Storing at room temperature long-term — hazelnuts go rancid quickly without refrigeration.
Frequently Asked Questions
- How many grams in a cup of Hazelnuts (Whole)?
- 1 cup of Hazelnuts (Whole) weighs 135 grams. This is the standard measurement used in most American recipes.
- How many cups is 135 grams of Hazelnuts (Whole)?
- 135 grams of Hazelnuts (Whole) equals exactly 1 cup. For partial amounts, use the converter above or the measurement table.
- Is 135 g per cup accurate for all brands?
- 135 g/cup is the widely accepted standard. Minor brand-to-brand variation exists (±5–10%), but for most baking purposes this figure is reliable.