Sugar Grams to Cups Converter
Convert granulated white sugar, packed brown sugar, powdered confectioners sugar, and raw sugars between grams and cups with precise density metrics.
Direct Answer
Not all sugar weighs the same. A cup of granulated white sugar is 200g, packed brown sugar is 220g, and powdered sugar is 120g. Pick your exact type below.
Because different ingredients within the sugar category have varying particle sizes and moisture levels, measuring by weight in grams ensures consistent baking results.
Sugar Weight to Cup Calculator
Select any ingredient from the sugar category to calculate cup and tablespoon conversions.
Custom package weights override standard database densities for this session without altering official database records.
Sugar Density & Weight Comparison Table
Every ingredient in the sugar category sorted by bulk density (grams per cup).
| Ingredient | Grams/Cup | 100g in Cups | 1 Cup in Grams | Detailed Guide |
|---|---|---|---|---|
| Powdered Sugar (Confectioners) | 120g | 120g | Powdered Sugar → | |
| Powdered Erythritol Blend | 120g | 120g | Confectioners Swerve → | |
| Granulated Date Sugar | 150g | 150g | Date Sugar → | |
| Granulated Maple Sugar | 160g | 160g | Maple Sugar → | |
| Light/Unpacked Brown Sugar | 180g | 180g | Loose Brown Sugar → | |
| Dark Brown Sugar (Loose) | 180g | 180g | Loose Dark Brown Sugar → | |
| Coconut Sugar | 192g | 192g | Coconut Sugar → | |
| Granulated Palm Sugar | 192g | 192g | Palm Sugar → | |
| Sucanat Unrefined Sugar | 192g | 192g | Sucanat → | |
| Keto Brown Sugar Substitute | 192g | 192g | Keto Brown Sugar → | |
| Granulated Sugar | 200g | 200g | Granulated Sugar → | |
| Superfine Caster Sugar | 200g | 200g | Caster Sugar → | |
| Belgian Pearl Sugar | 200g | 200g | Pearl Sugar → | |
| Raw Sugar (Turbinado) | 210g | 210g | Raw Sugar → | |
| Demerara Sugar | 210g | 210g | Demerara Sugar → | |
| Muscovado Sugar | 210g | 210g | Muscovado Sugar → | |
| Turbinado Sugar | 210g | 210g | Turbinado Sugar → | |
| Packed Brown Sugar | 220g | 220g | Brown Sugar → | |
| Dark Brown Sugar (Packed) | 220g | 220g | Dark Brown Sugar → |
Density Dynamics in Sugar
Sugar density is primarily dictated by sucrose crystal dimensions, moisture film thickness, and particle packing geometry. Standard table sugar consists of uniform sucrose crystals that settle closely together without inter-particle air pockets, yielding a consistent density of 200 grams per cup. Brown sugars retain residual molasses coatings (3.5% to 6.5% moisture by weight). This surface sticky moisture allows brown sugar to be firmly packed into a measuring cup, increasing bulk weight to 220 grams. Conversely, confectioners powdered sugar undergoes micro-milling and is blended with 3% cornstarch to prevent clumping. The ultra-fine dust traps substantial air volume, resulting in a low density of 120 grams unsifted or 100 grams sifted per cup.
Sugar Substitution Rules: Weight vs Volume
Substituting sugars requires evaluating both sweetness level and structural moisture. Swapping 200g of granulated sugar for 220g of packed brown sugar adds 10g of molasses water, increasing chewiness in cookies. Replacing granulated sugar with powdered sugar by volume (1 cup = 120g vs 200g) creates a massive 40% sugar shortage; always convert powdered sugar at a ratio of 1.66 cups per 1 cup of granulated sugar or swap equal weight in grams.
Common Gram Amounts to Cups Matrix (Sugar)
Quick conversion matrix for top sugar ingredients across standard recipe weights:
Sugar Cups to Grams Reverse Table
Standard cup volume weights in grams (¼ cup, ½ cup, ¾ cup, 1 cup) for sugar ingredients:
| Ingredient | ¼ Cup | ½ Cup | ¾ Cup | 1 Cup | Guide |
|---|---|---|---|---|---|
| Powdered Sugar (Confectioners) | 30.0g | 60.0g | 90.0g | 120g | Powdered Sugar → |
| Powdered Erythritol Blend | 30.0g | 60.0g | 90.0g | 120g | Confectioners Swerve → |
| Granulated Date Sugar | 37.5g | 75.0g | 112.5g | 150g | Date Sugar → |
| Granulated Maple Sugar | 40.0g | 80.0g | 120.0g | 160g | Maple Sugar → |
| Light/Unpacked Brown Sugar | 45.0g | 90.0g | 135.0g | 180g | Loose Brown Sugar → |
| Dark Brown Sugar (Loose) | 45.0g | 90.0g | 135.0g | 180g | Loose Dark Brown Sugar → |
| Coconut Sugar | 48.0g | 96.0g | 144.0g | 192g | Coconut Sugar → |
| Granulated Palm Sugar | 48.0g | 96.0g | 144.0g | 192g | Palm Sugar → |
| Sucanat Unrefined Sugar | 48.0g | 96.0g | 144.0g | 192g | Sucanat → |
| Keto Brown Sugar Substitute | 48.0g | 96.0g | 144.0g | 192g | Keto Brown Sugar → |
| Granulated Sugar | 50.0g | 100.0g | 150.0g | 200g | Granulated Sugar → |
| Superfine Caster Sugar | 50.0g | 100.0g | 150.0g | 200g | Caster Sugar → |
| Belgian Pearl Sugar | 50.0g | 100.0g | 150.0g | 200g | Pearl Sugar → |
| Raw Sugar (Turbinado) | 52.5g | 105.0g | 157.5g | 210g | Raw Sugar → |
| Demerara Sugar | 52.5g | 105.0g | 157.5g | 210g | Demerara Sugar → |
| Muscovado Sugar | 52.5g | 105.0g | 157.5g | 210g | Muscovado Sugar → |
| Turbinado Sugar | 52.5g | 105.0g | 157.5g | 210g | Turbinado Sugar → |
| Packed Brown Sugar | 55.0g | 110.0g | 165.0g | 220g | Brown Sugar → |
| Dark Brown Sugar (Packed) | 55.0g | 110.0g | 165.0g | 220g | Dark Brown Sugar → |
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Frequently Asked Questions: Sugar Conversions
How many grams in a cup of sugar?
1 US Legal Cup of white granulated sugar weighs exactly 200 grams. Packed brown sugar weighs 220 grams per cup, loose brown sugar weighs 180 grams, and powdered sugar weighs 120 grams per cup.
What is 1/2 cup sugar in grams?
1/2 cup of granulated sugar is 100 grams. 1/2 cup of packed brown sugar is 110 grams, and 1/2 cup of powdered sugar is 60 grams.
Why is packed brown sugar heavier than white sugar per cup?
Brown sugar contains molasses moisture which allows the crystals to compress tightly when packed, increasing cup weight from 200g (white sugar) to 220g. Unpacked loose brown sugar weighs only 180g per cup due to inter-particle air pockets.
How many grams of powdered sugar are in 1 cup?
Ununsifted powdered sugar weighs 120 grams per US cup. When sifted before measuring, it weighs approximately 100 grams per cup.
Can I swap coconut sugar for granulated sugar 1:1?
Yes, coconut sugar has a similar crystal structure and density (190-200g per cup), making it a suitable 1:1 weight swap in most recipes.
Does sugar volume change when melted into liquid syrup?
When dissolved in hot water, sucrose crystals disassemble into solution, increasing liquid volume without adding volume equal to dry sugar mass.
Why should I weigh sugar on a kitchen scale?
Humidity affects brown sugar moisture and powdered sugar aeration. Weighing sugar in grams ensures exact sweetness and prevents sticky or dry doughs.