Corn Syrup: Grams to Cups
1 cup of corn syrup = 328 grams
One US cup of corn syrup weighs 328 grams. One 250 ml metric cup — the one used in the UK, Australia, New Zealand and Canada — holds 347 grams. To convert any weight, divide the grams by the figure for your cup.
Light corn syrup weighs 341 g per cup on USDA FoodData Central and about 312 g on King Arthur Baking's chart; this site uses 328 g, between the two. Dark corn syrup is 328 g on USDA's figure.
Where the 328 g figure comes from
- USDA FoodData Central: 1 cup of “Syrups, corn, light” = 341 g (FDC ID 168837)
- King Arthur Baking ingredient weight chart: Corn syrup, 1 cup = 312 g (chart)
This site uses 328 g per US cup of corn syrup, spooned and levelled. References checked September 2026.
How many cups is X grams of corn syrup?
| Grams | US cups | Metric cups | Tablespoons | Ounces |
|---|---|---|---|---|
| 25 g corn syrup | ⅛ | ⅛ | 1.22 | 0.88 |
| 50 g corn syrup | ⅛ | ⅛ | 2.44 | 1.76 |
| 75 g corn syrup | ¼ | ¼ | 3.66 | 2.65 |
| 100 g corn syrup | ⅓ | ¼ | 4.88 | 3.53 |
| 110 g corn syrup | ⅓ | ⅓ | 5.37 | 3.88 |
| 120 g corn syrup | ⅜ | ⅓ | 5.85 | 4.23 |
| 125 g corn syrup | ⅜ | ⅜ | 6.1 | 4.41 |
| 130 g corn syrup | ⅜ | ⅜ | 6.34 | 4.59 |
| 140 g corn syrup | ⅜ | ⅜ | 6.83 | 4.94 |
| 150 g corn syrup | ½ | ⅜ | 7.32 | 5.29 |
| 170 g corn syrup | ½ | ½ | 8.29 | 6.00 |
| 175 g corn syrup | ½ | ½ | 8.54 | 6.17 |
| 200 g corn syrup | ⅝ | ⅝ | 9.76 | 7.05 |
| 225 g corn syrup | ⅔ | ⅔ | 10.98 | 7.94 |
| 240 g corn syrup | ¾ | ⅔ | 11.71 | 8.47 |
| 250 g corn syrup | ¾ | ¾ | 12.2 | 8.82 |
| 275 g corn syrup | ⅞ | ¾ | 13.41 | 9.70 |
| 300 g corn syrup | ⅞ | ⅞ | 14.63 | 10.58 |
| 350 g corn syrup | 1⅛ | 1 | 17.07 | 12.35 |
| 400 g corn syrup | 1¼ | 1⅛ | 19.51 | 14.11 |
| 450 g corn syrup | 1⅜ | 1⅓ | 21.95 | 15.87 |
| 500 g corn syrup | 1½ | 1½ | 24.39 | 17.64 |
How to measure corn syrup accurately
The 328 g figure assumes the spooned-and-levelled method: spoon the corn syrup 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 corn syrup = 328 g
- 1 metric cup (250 ml) of corn syrup = 347 g
- ¾ cup = 246 g
- ½ cup = 164 g
- ⅓ cup = 109 g
- ¼ cup = 82 g
- 1 tablespoon = 20.5 g
Frequently asked questions
How many cups is 100 grams of corn syrup?
100 grams of corn syrup is about ⅓ US cups, based on 328 g per cup, or ¼ metric cups.
How many grams in a cup of corn syrup?
One US cup of corn syrup weighs 328 grams. A 250 ml metric cup holds 347 grams.
How many cups is 250 grams of corn syrup?
250 grams of corn syrup is about ¾ US cups, or ¾ metric cups.
Does a UK cup of corn syrup 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 — 347 g of corn syrup rather than 328 g.
How many tablespoons is 100 grams of corn syrup?
100 grams of corn syrup is about 4.88 tablespoons.
More sugars and sweeteners conversions: Maple Syrup grams to cups.