How many grams is 1 cup of corn syrup?

One US cup of corn syrup weighs approximately 328 grams. This value applies to both light and dark corn syrup, since the two have very similar density.

Is light corn syrup the same weight as dark corn syrup?

Yes, in practice. Dark corn syrup has a small amount of molasses or caramel color added, which makes only a negligible difference to density, so the same 328 g/cup figure is used for both.

Why does corn syrup weigh more than water per cup?

Corn syrup is a thick, concentrated sugar solution. Its density is higher than water, roughly 1.38 g/mL, which is why a cup of corn syrup weighs noticeably more than a cup of water (about 236 g).

What if my recipe uses tablespoons or teaspoons?

There are 16 tablespoons and 48 teaspoons in one US cup. One tablespoon of corn syrup is therefore about 20.5 g, and one teaspoon is about 6.8 g.

Can I substitute honey or maple syrup using the same gram amount?

Not exactly. Honey and maple syrup have different densities than corn syrup, so converting by cup volume rather than gram weight gives a more accurate substitution.

Does the container size or spoon method affect the weight?

No. Unlike dry ingredients, liquid corn syrup fills a measuring cup fully with no air pockets, so the 328 g/cup figure is consistent regardless of how it is poured.

Corn Syrup Cups to Grams Converter

Enter a cup amount and instantly get the equivalent weight in grams using the standard corn syrup density of 328 g/cup.

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Using the standard density of 328 g per cup for corn syrup (light or dark).

Cups of Corn Syrup

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Enter cups on the left to see grams

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Summary

This converter translates US cup measurements of corn syrup into grams using the widely accepted density of 328 grams per cup, the same figure used for both light and dark corn syrup. Whether you are scaling a candy recipe, a pecan pie, or a batch of caramel, knowing the exact gram weight helps you hit consistent results on a kitchen scale. Enter the number of cups and the gram equivalent appears immediately.

How it works

Enter the amount of corn syrup in cups (e.g. 0.5 or 1.25).
The tool multiplies your input by 328 g/cup — the standard density for corn syrup.
The result in grams is displayed immediately, rounded to one decimal place.
Use the quick-select buttons for common fractions (1/4, 1/3, 1/2, 2/3, 3/4, 1).
Click "Reset" to clear the form and start a new conversion.

Use cases

Weigh corn syrup precisely for candy, caramel, or fudge recipes.
Scale pecan pie or pralines recipes that list corn syrup in cups to gram amounts.
Adapt US recipes for kitchen scales that measure in grams.
Verify corn syrup amounts when halving or doubling a batch.
Convert baking portions to gram weights for nutrition tracking.
Help home bakers and pastry students learn cup-to-gram equivalents for syrups.

Frequently Asked Questions

Last updated: 2026-09-09 · Reviewed by Nham Vu