Cups to Grams Converter

By

Joe Sexton

Joe is the creator of Inch Calculator and has over 20 years of experience in engineering and construction. He holds several degrees and certifications.

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Reviewed by

Ethan Dederick, PhD

Ethan has a PhD in astrophysics and is currently a satellite imaging scientist. He specializes in math, science, and astrophysics.

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Sexton, J. (n.d.). Cups to Grams Converter. Inch Calculator. Retrieved March 24, 2026, from https://www.inchcalculator.com/convert/cup-to-gram/

How Many Grams Are in a Cup?

Before you convert cups to grams, it's important to note that cups measure volume, while grams measure weight. There are 237 grams of water in a cup, but the conversion depends on the ingredient or substance.

For instance, 1 cup of butter weighs more than 1 cup of flour or sugar because it's denser. The easiest way to convert cups to grams is to use the converter above or a conversion chart.

How to Convert Cups to Grams

Here is how to convert cups to grams in a few easy steps.

Step One: Find the Ingredient Density

The first step in the conversion is to determine what ingredient you're trying to convert, since they vary in density.

We suggest referencing an ingredient density chart, such as the chart provided by the U.N. Food and Agriculture Organization.^[1] For example, whole milk has a density of 1.03 g/mL, and wheat flour has a density of 0.478 g/mL.

Step Two: Use the Cups to Grams Formula

To convert a measurement in cups to grams, multiply the volume by the ingredient or material's density. For this to work, the ingredient's density must be in grams per cup (g/c).

If the density is given in grams per milliliter (g/mL), first multiply it by 236.5882 to convert to g/c.

For a density given in g/mL, you can use this simple formula to convert:

grams = cups × 236.5882 × density

Thus, the weight in grams is equal to the volume in cups multiplied by 236.5882 times the density (in g/mL) of the ingredient, substance, or material.

When to Convert Cups to Grams

Cups and grams are both commonly used to measure cooking ingredients.

For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.^[2] The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping.

The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the volume to weight conversion.

For cooking and baking ingredients, you can get more specific results using our butter, flour, and sugar conversion calculators.

Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.

It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.^[3]

Keep reading to learn more about each unit of measure.

More Cup & Gram Conversions