Brown Sugar Cups to Grams Converter
Instantly convert cups of brown sugar to grams — and grams back to cups — for firmly packed, lightly packed, and loose measures. Works for both light and dark brown sugar.
Cups to Grams, or Grams to Cups?
Pick a direction below. Brown sugar’s weight per cup depends heavily on how firmly it’s packed — a firmly packed cup weighs noticeably more than a loosely spooned one, so choose the packing style your recipe means.
Brown Sugar Cups to Grams
Enter a cup amount and packing style to get the weight in grams
Recipes almost always mean “firmly packed” unless stated otherwise
Decimals allowed, e.g. 1.5 cups
Grams Result
Weight equivalent for your cup amount
Choose a packing style and amount to see the result.
Grams to Brown Sugar Cups
Enter a gram amount and packing style to get the cup equivalent
Recipes almost always mean “firmly packed” unless stated otherwise
Enter the weight shown on your kitchen scale
Cups Result
Cup equivalent for your gram amount
Choose a packing style and amount to see the result.
Brown Sugar Cups to Grams Reference Table
Grams for common cup sizes across all three packing styles — handy for when you don’t want to type numbers into a calculator. Light and dark brown sugar share the same weight per cup; only flavour and colour differ.
| Cup Amount | Firmly Packed | Lightly Packed | Loose / Sifted |
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Brown Sugar Cups to Grams FAQ
Everything home cooks and bakers ask about converting brown sugar cups to grams.
A firmly packed cup of brown sugar weighs about 220 grams. A lightly packed cup weighs closer to 200 grams, and a loose or sifted cup (simply spooned in without pressing) weighs around 180 grams. Recipes almost always mean firmly packed unless stated otherwise.
Packed means pressing the brown sugar firmly into the measuring cup with the back of a spoon until it holds the shape of the cup when turned out. Because brown sugar’s moisture makes it clump, packing removes air pockets so the measurement is consistent between recipes and cooks.
Yes, essentially. Light and dark brown sugar have the same granule size and packing density — dark brown sugar simply contains more molasses by proportion, which affects flavour and colour but not the weight per packed cup. Both weigh approximately 220 grams per packed cup.
Half a cup of firmly packed brown sugar weighs approximately 110 grams. A quarter cup is about 55 grams, and a third of a cup is about 73 grams, all assuming a standard firm pack.
Brown sugar contains molasses, which adds moisture and makes the crystals clump together and pack more densely into a measuring cup. A packed cup of brown sugar (about 220 grams) weighs more than a cup of granulated white sugar (about 200 grams) as a result.
Divide the weight in grams by the grams-per-cup value for your packing style — 220 grams per cup for firmly packed, 200 for lightly packed, or 180 for loose. For example, 110 grams divided by 220 grams per packed cup equals half a cup. Use the Grams to Cups tab above to do this instantly.
Yes, and it’s more accurate. Because packing tightness varies from person to person, weighing brown sugar in grams removes the guesswork of how hard to press it into a cup. Most professional bakers weigh brown sugar rather than measuring it by volume.