½ cup of sunflower seeds in ounces
½ cup of sunflower seeds ≈ 2.47 oz = 70 g · 118 mL by volume · at 140 g per cup, spooned and leveled. Use the converter below for any amount or ingredient.
Result: …
Formula
grams = cups × 140 (sunflower seeds) ; ounces = grams ÷ 28.3495
Why weight beats volume for sunflower seeds
A cup is a volume; a recipe cares about mass. Sunflower seeds runs about 140 g per US cup measured spoon-and-level, but packing, humidity, and grind can move that by ±10%. Weighing removes the guesswork, which is exactly why serious baking recipes list grams.
Sunflower seeds: cups to ounces table
| Amount | Grams | Ounces |
|---|---|---|
| ¼ cup | 35 g | 1.23 oz |
| ⅓ cup | 47 g | 1.65 oz |
| ½ cup (this page) | 70 g | 2.47 oz |
| ⅔ cup | 93 g | 3.29 oz |
| ¾ cup | 105 g | 3.7 oz |
| 1 cup | 140 g | 4.94 oz |
| 1½ cups | 210 g | 7.41 oz |
| 2 cups | 280 g | 9.88 oz |
| 3 cups | 420 g | 14.82 oz |
Frequently asked questions
How many ounces is ½ cup of sunflower seeds?
½ cup of sunflower seeds is about 2.47 oz (70 g), based on 140 g per US cup, measured spoon-and-level.
Why does the ingredient change the answer?
Cups measure volume, grams measure weight. Dense ingredients pack more weight into the same cup: a cup of honey is 340 g while a cup of rolled oats is only 90 g. That is why generic cup-to-gram converters get recipes wrong.
Does it matter how I fill the cup?
Yes, these figures assume you spoon the ingredient into the cup and level it off. Scooping, packing, or tapping the cup can change the weight by 10% or more, which is why bakers prefer a scale.
Is this a US cup or a metric cup?
A US customary cup (236.6 mL). A metric cup is 250 mL, about 5.7% bigger, and old UK recipes use a 284 mL imperial cup. ½ cup here is 118 mL by volume.