Grapes (seedless): Grams to Cups
1 cup of grapes (seedless) = 151 grams
One US cup of grapes (seedless) weighs 151 grams. One 250 ml metric cup — the one used in the UK, Australia, New Zealand and Canada — holds 160 grams. To convert any weight, divide the grams by the figure for your cup.
A cup of seedless red or green grapes weighs 151 g (USDA FoodData Central, grapes, European type such as Thompson seedless). USDA weighs 10 grapes at 49 g, so a cup holds about 30 grapes. Smaller slip-skin grapes such as Concord pack differently and are much lighter per cup, 92 g in USDA's data, at about 2.4 g each.
Where the 151 g figure comes from
- USDA FoodData Central: 1 cup of “Grapes, red or green (European type, such as Thompson seedless), raw” = 151 g (FDC ID 174683)
This site uses 151 g per US cup of grapes (seedless), spooned and levelled. References checked September 2026.
How many cups is X grams of grapes (seedless)?
| Grams | US cups | Metric cups | Tablespoons | Ounces |
|---|---|---|---|---|
| 25 g grapes (seedless) | ⅛ | ⅛ | 2.65 | 0.88 |
| 50 g grapes (seedless) | ⅓ | ⅓ | 5.3 | 1.76 |
| 75 g grapes (seedless) | ½ | ½ | 7.95 | 2.65 |
| 100 g grapes (seedless) | ⅔ | ⅝ | 10.6 | 3.53 |
| 110 g grapes (seedless) | ¾ | ⅔ | 11.66 | 3.88 |
| 120 g grapes (seedless) | ¾ | ¾ | 12.72 | 4.23 |
| 125 g grapes (seedless) | ⅞ | ¾ | 13.25 | 4.41 |
| 130 g grapes (seedless) | ⅞ | 0.81 | 13.77 | 4.59 |
| 140 g grapes (seedless) | ⅞ | ⅞ | 14.83 | 4.94 |
| 150 g grapes (seedless) | 1 | 0.94 | 15.89 | 5.29 |
| 170 g grapes (seedless) | 1⅛ | 1⅛ | 18.01 | 6.00 |
| 175 g grapes (seedless) | 1⅛ | 1⅛ | 18.54 | 6.17 |
| 200 g grapes (seedless) | 1⅓ | 1¼ | 21.19 | 7.05 |
| 225 g grapes (seedless) | 1½ | 1⅜ | 23.84 | 7.94 |
| 240 g grapes (seedless) | 1⅝ | 1½ | 25.43 | 8.47 |
| 250 g grapes (seedless) | 1⅔ | 1⅝ | 26.49 | 8.82 |
| 275 g grapes (seedless) | 1⅞ | 1¾ | 29.14 | 9.70 |
| 300 g grapes (seedless) | 2 | 1⅞ | 31.79 | 10.58 |
| 350 g grapes (seedless) | 2⅓ | 2¼ | 37.09 | 12.35 |
| 400 g grapes (seedless) | 2⅔ | 2½ | 42.38 | 14.11 |
| 450 g grapes (seedless) | 3 | 2⅞ | 47.68 | 15.87 |
| 500 g grapes (seedless) | 3⅓ | 3⅛ | 52.98 | 17.64 |
How to measure grapes (seedless) accurately
The 151 g figure assumes the spooned-and-levelled method: spoon the grapes (seedless) into a dry measuring cup and sweep the top flat with a straight edge. Scooping the cup through the bag compacts it and gives a heavier cup.
- 1 US cup of grapes (seedless) = 151 g
- 1 metric cup (250 ml) of grapes (seedless) = 160 g
- ¾ cup = 113 g
- ½ cup = 76 g
- ⅓ cup = 50 g
- ¼ cup = 38 g
- 1 tablespoon = 9.4 g
Frequently asked questions
How many cups is 100 grams of grapes (seedless)?
100 grams of grapes (seedless) is about ⅔ US cups, based on 151 g per cup, or ⅝ metric cups.
How many grams in a cup of grapes (seedless)?
One US cup of grapes (seedless) weighs 151 grams. A 250 ml metric cup holds 160 grams.
How many cups is 250 grams of grapes (seedless)?
250 grams of grapes (seedless) is about 1⅔ US cups, or 1⅝ metric cups.
Does a UK cup of grapes (seedless) weigh the same as a US cup?
No. A UK, Australian or Canadian metric cup is 250 ml against the US 236.6 ml, so it holds about 5.7% more — 160 g of grapes (seedless) rather than 151 g.
How many tablespoons is 100 grams of grapes (seedless)?
100 grams of grapes (seedless) is about 10.6 tablespoons.
How many grams is 1 cup of grapes?
151 grams of seedless red or green grapes (USDA FoodData Central). Half a cup is about 76 g.
How many grapes are in 1 cup?
About 30. USDA weighs 10 seedless grapes at 49 g, or 4.9 g each, and 151 ÷ 4.9 = 31.
How many cups of grapes are in a pound?
About 3 cups. 1 pound is 454 g, and 454 ÷ 151 = 3.0 cups.
How much does a cup of Concord grapes weigh?
92 grams. USDA lists American slip-skin grapes such as Concord at 92 g a cup and 2.4 g per grape.