Why do different ingredients give different gram values for the same number of cups?

Grams measure mass (weight), while cups measure volume. Dense ingredients like honey or butter pack more mass into the same volume than light ones like oats or cocoa powder, so the gram count differs even for the same cup amount.

Are these conversions accurate enough for baking?

Yes. The density values used here match widely accepted culinary standards (USDA data and professional baking references). For critical baking — bread, macarons, pastry — always weigh ingredients directly if possible, since how you scoop flour can add or remove 10–20%.

What is one standard US cup in milliliters?

One US legal cup equals 240 ml. Some older recipes use a 250 ml metric cup; this tool uses the 240 ml US standard.

Is butter measured the same as shortening?

No. Butter and shortening have similar but not identical densities. This tool has a dedicated "butter" entry. Shortening is slightly lighter per cup than butter.

Can I convert fractions of a cup?

Yes. Use the fraction buttons (1/4, 1/3, 1/2, 2/3, 3/4) or type any decimal value such as 0.25 or 1.5 into the input.

Cups to Grams Converter

Convert cups to grams for common cooking ingredients using accurate density factors.

Enter Measurement

Ingredient Cups

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Result

Select an ingredient and enter cups above.

Quick Reference — 1 Cup in Grams

Ingredient	1 cup (g)	1/2 cup (g)	1/4 cup (g)

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Summary

This tool converts cup measurements to grams using the actual density of each ingredient, so you get accurate results whether you are measuring flour, sugar, butter, or honey. Volume-to-weight conversions differ significantly between ingredients — a cup of honey weighs over three times a cup of flour. Select your ingredient, enter the number of cups, and get the gram equivalent instantly.

How it works

Select the ingredient from the dropdown list.
Enter the number of cups (whole numbers or decimals like 0.5 or 1.75).
The gram weight updates instantly based on that ingredient's density.
Use the fraction buttons (1/4, 1/3, 1/2, 2/3, 3/4) for common baking fractions.
Click Copy to copy the result for use in recipes or notes.

Use cases

Weigh flour, sugar, or butter accurately when a recipe gives cup measurements but you have a kitchen scale.
Convert baking recipes from American cups to metric grams.
Scale recipes up or down while keeping ingredient ratios correct.
Check if the amount of an ingredient in a recipe makes sense by weight.
Adapt international recipes that mix cups and grams.
Teach students the difference between volume and weight in cooking.

Frequently Asked Questions

Last updated: 2026-07-14 · Reviewed by Nham Vu