2 Cups Corn Syrup in Grams
If you need 2 cups of corn syrup in grams, the answer is 624 g — measured poured, according to King Arthur Baking. You are probably here mid-recipe, so here is the number first and the explanation second. The rest of this page gives you the full conversion table for corn syrup, worked examples from real recipes, the measuring method behind the number, and the mistakes that most often throw this conversion off. All weights here are approximate; a kitchen scale is the final word when precision counts.
The problem with cups, in one paragraph
A cup looks like a fixed unit, but for corn syrup it is not. The same cup can hold more or less depending on how the ingredient settled in its container, whether it was spooned in or scooped, and whether it was levelled or heaped. With 2 cups of corn syrup, the gap between a careful spoon-and-level measure and a careless scoop can be tens of grams — enough to change a recipe. Weighing 624 g instead removes the whole question. It is also faster once you get used to it: put the bowl on the scale, press tare, and pour until the display reads 624. No levelling, no sweeping, no second-guessing. The table below gives you every amount you are likely to need, so you can weigh instead of measuring by volume from now on.
Corn Syrup cups to grams conversion table
| Cups | Grams | Tablespoons (approx.) |
|---|---|---|
| 1/4 cup | 78 g | 4.9 g |
| 1/3 cup | 104 g | 6.5 g |
| 1/2 cup | 156 g | 9.8 g |
| 2/3 cup | 208 g | 13 g |
| 3/4 cup | 234 g | 14.6 g |
| 1 cup | 312 g | 19.5 g |
| 1 1/2 cups | 468 g | 29.2 g |
| 2 cups | 624 g | 39 g |
| 3 cups | 936 g | 58.5 g |
| 4 cups | 1248 g | 78 g |
The tablespoon column is a bonus for recipes that call for a spoonful or two: one tablespoon of corn syrup weighs about 19.5 g. Remember that a cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded sensibly. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one.
How the weight was measured
Poured means the ingredient was measured the way King Arthur Baking measures it: poured into a liquid measuring jug and read at eye level at the meniscus. Liquids do not pack, so the main source of error is reading the jug from above or using a dry cup for a liquid measure. The source for the 312 g per cup figure is King Arthur Baking, and the confidence in the value is high. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup.
Worked examples
Scaling a cake recipe for a crowd
A cake that serves eight and uses 1 cup of corn syrup becomes a cake for sixteen with 2 cups, or 624 g. Scaling sugar by volume compounds the error, and sugar is the ingredient where a 10% error is most noticeable — too little and the cake is dry and pale, too much and it is cloying and sinks. Weigh it, and the doubled cake behaves exactly like the original.
A meringue where every gram counts
Meringue is one of the least forgiving things you can bake: the sugar must dissolve fully and the ratio to egg white must be right. For a meringue using 2 cups of corn syrup, weigh 624 g rather than trusting a cup. Fine sugar dissolves faster, so if your sugar is coarse, give it an extra minute of whisking and check for grittiness between your fingers before piping.
Sweetening a large batch of iced tea
A big jug of iced tea sweetened with 2 cups of corn syrup needs 624 g. Dissolve it in a little hot water first to make a syrup, then stir it into the cold tea — it mixes evenly and you can taste and adjust. Weighing the sugar means the same jug tastes the same every time you make it.
When you do not have a scale
If you have no scale, spoon and level is your best method: spoon corn syrup into the cup until it is heaped, then sweep a straight knife across the rim. Do not scoop, do not tap the cup, and do not shake it down. For 2 cups, fill the cup twice, levelling each time. It will not be as accurate as weighing 624 g, but it will be far closer than scooping. A useful check: a cup of corn syrup weighed on a friend's scale once tells you what your spoon-and-level cup actually weighs, and you can adjust from there. If you bake more than once a month, a basic digital scale is the single best purchase you can make for your kitchen — it costs little, takes up no space, and removes the biggest source of recipe failure.
Frequently asked questions
How many grams is 2 cups of corn syrup?
2 cups of corn syrup weighs approximately 624 g, measured poured. The figure comes from the King Arthur Baking value of 312 g per cup. All weights on this page are approximate — verify with a kitchen scale when precision matters.
Does the brand of corn syrup change the weight?
It can, by a few grams per cup. Different brands mill, grind or process corn syrup slightly differently, and moisture content varies with storage. The King Arthur Baking value of 312 g per cup is a standard reference, not a measurement of your specific packet — another reason to verify with a scale for important recipes.
What is the easiest way to weigh 2 cups of corn syrup?
Put your mixing bowl on a digital scale, press tare to zero it, and pour or spoon in corn syrup until the display reads 624 g. Add other dry ingredients on top, taring between each one, and you can measure a whole recipe in one bowl with no extra washing up.
Can I halve or double this amount?
Yes. Half of 2 cups of corn syrup is 312 g, and double is 1248 g. Weighing makes scaling exact, whereas halving or doubling cups compounds measuring error. Scale the corn syrup by weight and adjust leavening and seasoning by taste rather than by a straight multiple.
How should I store corn syrup?
Airtight container at room temperature, up to 1 year. Keeping it sealed and dry also keeps the cup weight close to the 312 g per cup value used on this page.
Corn syrup is one of the hardest ingredients to measure by volume because it clings to the cup. Lightly oiling the measuring cup first lets the syrup slide out cleanly, and warming the bottle in hot water for a minute thins it enough to pour. Measure it before any dry ingredients, so the cup is clean and the syrup does not pick up flour.