How Many Grams in a Cup of Corn Syrup?
One cup of corn syrup weighs 341 grams when poured into a liquid measuring cup and read at eye level and this page converts corn syrup between cups, grams, tablespoons, teaspoons, millilitres and ounces, with full tables, worked examples and a free converter.
| Measure | Weight |
|---|---|
| 1 cup | 341 g |
| 1 tablespoon | 21.3 g |
| 1 teaspoon | 7.1 g |
| 1 cup (volume) | 236.6 ml |
| 1 cup in ounces | 12 oz |
| 100 grams | 0.29 cups |
One cup of corn syrup weighs 341 grams — the heaviest cup in the GramChef database, a gram heavier than honey. British golden syrup converts at the same weight. It pours like cold honey and clings like it too. Below are the full conversion tables, a converter for any amount, and how to measure it without the mess.
Convert corn syrup instantly
This converter uses the same chef-reviewed database as our Cups to Grams converter for all 128 ingredients. Weights assume a US cup of 236.588 ml; see our methodology and sources.
Cups to grams: corn syrup
| Cups | Grams |
|---|---|
| ¼ cup | 85 g |
| ⅓ cup | 114 g |
| ½ cup | 171 g |
| ⅔ cup | 227 g |
| ¾ cup | 256 g |
| 1 cup | 341 g |
| 1½ cups | 512 g |
| 2 cups | 682 g |
| 3 cups | 1023 g |
| Measure | Grams |
|---|---|
| 1 tablespoon | 21.3 g |
| 1 teaspoon | 7.1 g |
| 1 cup in ounces | 12 oz |
Grams to cups: corn syrup
| Grams | Cups (decimal) | Cups (fraction) |
|---|---|---|
| 50 g | 0.15 cups | ⅛ cups |
| 100 g | 0.29 cups | ⅓ cups |
| 125 g | 0.37 cups | ⅜ cups |
| 150 g | 0.44 cups | 0.44 cups |
| 200 g | 0.59 cups | ⅝ cups |
| 250 g | 0.73 cups | ¾ cups |
| 300 g | 0.88 cups | ⅞ cups |
| 400 g | 1.17 cups | 1 ⅛ cups |
| 500 g | 1.47 cups | 1 ½ cups |
Working with more than one ingredient? The grams in a cup chart puts 40 ingredients in one table, and the Whole Recipe Converter converts a full ingredient list in a single paste.
How to measure corn syrup properly
Weigh it, or oil everything it touches. Corn syrup's job in candy and pecan pie is precision, and a scraped-out measuring cup can hold back 20 grams or more. Bowl on scale, pour to 341 grams per cup, done. If you must use a cup, oil it first as you would for honey.
Light and dark weigh the same. Dark corn syrup is coloured and flavoured with a molasses-like refiner's syrup, but the density is unchanged: 341 grams a cup for both. Choose by flavour and colour; convert by this table either way.
Warm syrup pours true. Cold corn syrup moves so slowly that a 'full' cup measured in a hurry is often short, the rest still travelling down the jug. Let the bottle stand in warm water for a few minutes and it pours completely and levels honestly.
Frequently asked questions
How many grams are in a cup of corn syrup?
341 grams — the heaviest cup in this database, one gram ahead of honey (340 grams). The figure covers light and dark corn syrup and British golden syrup, which the database treats as equivalents.
How many grams are in a tablespoon of corn syrup?
21.3 grams — call it 21. A teaspoon is 7.1 grams. In candy-making those spoonfuls are usually there to stop crystallisation, and accuracy matters more than the small amounts suggest.
Can I substitute honey for corn syrup?
By weight, yes — use 341 grams of honey for a cup of corn syrup and the maths holds (honey is 340 grams a cup). The result will taste of honey and behave slightly differently in candy, since honey is more acidic, but for pies, bars and glazes the swap is routine.
Sources: the weight on this page is based on published values from the King Arthur Baking ingredient weight chart and USDA FoodData Central, chosen and checked as described in our methodology.