How to measure light corn syrup
The figure comes from USDA FoodData Central (168837, Syrups, corn, light): 341 grams per cup. USDA lists dark corn syrup a little lower at 328 grams. King Arthur Baking’s chart gives 312 grams for a cup of corn syrup, 29 grams less than USDA, a bigger gap than most ingredients show between the two sources; if your recipe comes from King Arthur, use its number. Half a cup is 171 grams, a tablespoon about 21 grams. For a candy recipe that needs an exact amount, weigh the syrup into the pan instead of scraping it out of a cup.
Sources: 341 grams per US cup is the cup weight in USDA FoodData Central (open FDC entry 168837), entry “Syrups, corn, light, 1 cup = 341 g”. A US cup is about 237 milliliters.
Light corn syrup: cups to grams chart
| Cups | Grams | Ounces |
|---|---|---|
| 1/8 cup | 43 g | 1.5 oz |
| 1/4 cup | 85 g | 3.01 oz |
| 1/3 cup | 114 g | 4.01 oz |
| 1/2 cup | 171 g | 6.01 oz |
| 2/3 cup | 227 g | 8.02 oz |
| 3/4 cup | 256 g | 9.02 oz |
| 1 cup | 341 g | 12 oz |
| 1 1/2 cups | 512 g | 18 oz |
| 2 cups | 682 g | 24.1 oz |
| 3 cups | 1,023 g | 36.1 oz |
| 4 cups | 1,364 g | 48.1 oz |
Tablespoons and teaspoons of light corn syrup
Three teaspoons make a tablespoon and 16 tablespoons make a cup, so the spoon weights follow straight from the 341 grams per cup. Use level spoons, not heaped ones.
| Spoons | Grams |
|---|---|
| 1/4 tsp | 1.8 g |
| 1/2 tsp | 3.6 g |
| 1 tsp | 7.1 g |
| 1 tbsp | 21 g |
| 2 tbsp | 43 g |
| 3 tbsp | 64 g |
| 4 tbsp | 85 g |
Grams of light corn syrup to cups
Going the other way, divide the grams by 341. A cup of light corn syrup weighs 104 grams more than a cup of water, which is 237 grams.
| Grams | Cups | In the kitchen |
|---|---|---|
| 25 g | 0.07 cup | about 1.2 tbsp |
| 50 g | 0.15 cup | about 2.3 tbsp |
| 100 g | 0.29 cup | just under 1/3 cup |
| 150 g | 0.44 cup | just under 1/2 cup |
| 200 g | 0.59 cup | just under 5/8 cup |
| 250 g | 0.73 cup | just under 3/4 cup |
| 300 g | 0.88 cup | about 7/8 cup |
| 400 g | 1.17 cups | just over 1 1/8 cups |
| 500 g | 1.47 cups | just under 1 1/2 cups |
| 1,000 g | 2.93 cups | just over 2 7/8 cups |
Other sugars per cup
- Granulated sugar: 198 grams per cup
- Brown sugar (packed): 213 grams per cup
- Powdered sugar: 113 grams per cup
- Superfine (caster) sugar: 190 grams per cup
- Coconut sugar: 154 grams per cup
- Turbinado sugar: 180 grams per cup
- Demerara sugar: 220 grams per cup
- Molasses: 337 grams per cup
- Agave syrup: 336 grams per cup
- Maple sugar: 156 grams per cup
- Pearl sugar: 196 grams per cup
- Coarse sparkling sugar: 228 grams per cup
- Cinnamon sugar: 200 grams per cup
- Dark corn syrup: 328 grams per cup
For every ingredient in one place, open the cups to grams converter. The recipe scaler halves or doubles a recipe, sugar included, and the oven temperature converter translates Celsius and gas marks for bakes from abroad.
Frequently asked questions
How many grams is 1/2 cup of light corn syrup?
About 171 grams. A full cup is about 341 grams and 1/4 cup about 85 grams.
How many cups is 100 grams of light corn syrup?
About 0.29 cups, just under 1/3 cup. Divide the grams by 341 to get cups.
How many grams are in a tablespoon of light corn syrup?
About 21 grams in a tablespoon and 7.1 grams in a teaspoon, measured level.
How many grams is 1/2 cup of light corn syrup?
About 171 grams, half of USDA’s 341 grams per cup. A tablespoon is about 21 grams.