Cups to Grams Calculator

Convert cups to grams for any ingredient. Supports fractions like ½ cup, ¼ cup.

Convert Cups to Grams

Accepts decimals (0.5) or fractions (1/2 or 1 1/2)

💡 Select an ingredient and enter the cup amount.

Quick Presets

Converting Cups to Grams Accurately

A cup is a unit of volume, while grams measure mass (weight). Because different ingredients have different densities, 1 cup of flour is not the same weight as 1 cup of sugar or 1 cup of honey. This is why a simple multiplication factor cannot work across all ingredients — each one requires its own gram-per-cup density value.

This cups-to-grams calculator covers 48 ingredients across 9 categories: flour and grains, sugars and sweeteners, fats and oils, dairy, grains and cereals, baking essentials, nuts and seeds, mix-ins, and liquids. All values are based on the US customary cup (240 mL) and standard measurement practices — flour is spooned and leveled, brown sugar is packed, and so on.

The input field accepts both decimal notation (0.5, 1.75) and fraction notation (1/2, 1 3/4). Use the quick preset buttons for the most common cup fractions. Simply select your ingredient, enter the cup amount, and get the gram equivalent instantly — along with tablespoon and teaspoon equivalents.

Worked Examples

All-Purpose Flour

1 cup

= 125 g

125 g/cup density

White Sugar

1 cup

= 200 g

200 g/cup density

Butter

½ cup

= 113.5 g

227 g/cup density

Cocoa Powder

¾ cup

= 63.75 g

85 g/cup density

Popular Ingredient Density Reference

Values based on US cup (240 mL), spooned and leveled standard.

Ingredient g / cup g / tbsp g / tsp
All-Purpose Flour 125 7.8 2.6
Bread Flour 130 8.1 2.7
Whole Wheat Flour 120 7.5 2.5
White Sugar 200 12.5 4.2
Brown Sugar (packed) 213 13.3 4.4
Powdered Sugar 120 7.5 2.5
Butter 227 14.2 4.7
Honey 336 21.0 7.0
Milk (whole) 244 15.3 5.1
Cocoa Powder 85 5.3 1.8
Rolled Oats 90 5.6 1.9
Almond Flour 96 6.0 2.0

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Frequently Asked Questions

1 cup of all-purpose flour is 125 grams using the spoon-and-level method. Bread flour is slightly denser at 130 g/cup, whole wheat flour is 120 g/cup, and cake flour is 114 g/cup. Always check which flour your recipe specifies, as these differences can noticeably affect baked goods.
This calculator accepts both decimal and fraction notation. You can type 0.5 for half a cup, or type 1/2 directly. For mixed fractions like one and a half cups, type 1 1/2. The calculator will parse whichever format you use and convert it correctly.
A cup is a unit of volume — it always measures the same physical space (240 mL in the US). However, different ingredients have different densities, meaning they pack more or less mass into that same volume. For example, a cup of light cocoa powder (85 g) weighs far less than a cup of honey (336 g) even though both fill the same cup volume.
Yes, the US legal cup is 240 mL (8 US fluid ounces). This is the standard used in most American recipes and by this calculator. Be aware that other countries use different cup sizes: Australia uses 250 mL, Canada uses 227 mL, and Japan uses 200 mL. If your recipe is from a non-US source, you may need to adjust the cup size accordingly.
1 cup of butter is 227 grams, which equals 2 standard US sticks. Half a cup (1 stick) is 113.5 g, a quarter cup (half a stick) is about 56.75 g, and 1 tablespoon of butter is approximately 14.2 g. US butter wrappers usually have tablespoon markings for easy measuring.
1 cup of granulated white sugar is 200 grams. Packed brown sugar is 213 g per cup, caster sugar is 200 g per cup, powdered (confectioners') sugar is 120 g per cup (sifted), and coconut sugar is 160 g per cup. The type of sugar and how it is measured significantly affects the weight.
Packed brown sugar means pressing the sugar firmly into the measuring cup until it holds the shape of the cup when turned out. This yields approximately 213 g per cup. Unpacked (loosely spooned) brown sugar can weigh significantly less, around 150–170 g per cup. Most recipes that call for brown sugar mean packed unless stated otherwise. This calculator uses the packed standard of 213 g/cup.
This calculator uses the US cup (240 mL) as its standard. If you have a recipe using the metric/Australian cup (250 mL), multiply your cup amount by 250/240 (approximately 1.0417) before entering it into this calculator to get the correct gram equivalent. For example, 1 Australian cup equals approximately 1.042 US cups.