1 Cup Brown Sugar in Grams
1 cup of brown sugar weighs 213 g (packed, King Arthur Baking). White sugar coated in molasses; light and dark differ only in molasses content. All the figures on this page are approximate conversions based on the King Arthur Baking value, so when a recipe really matters, verify with a kitchen scale.
Why weighing brown sugar beats measuring it in cups
Sugar is more forgiving than flour, but its weight still matters, especially in baking where sugar does structural work. Sugar tenderises crumb, holds moisture, helps browning, and feeds yeast, so getting the amount wrong changes texture as well as sweetness. A cup of granulated sugar that is heaped instead of levelled can add 15 to 20 g, which is enough to make cookies spread too far or a cake sink in the middle. Weighing sugar takes seconds and makes the result repeatable, which is exactly what you want when a recipe is a favourite you bake again and again.
White sugar coated in molasses; light and dark differ only in molasses content. It is used for cookies, barbecue sauces, glazes and oatmeal. That range of uses is part of why the conversion comes up so often: the same ingredient appears in everyday cooking and in precise baking, and the two situations demand different levels of accuracy.
Brown Sugar cups to grams conversion table
| Cups | Grams | Tablespoons (approx.) |
|---|---|---|
| 1/4 cup | 53.2 g | 3.3 g |
| 1/3 cup | 71 g | 4.4 g |
| 1/2 cup | 106.5 g | 6.7 g |
| 2/3 cup | 142 g | 8.9 g |
| 3/4 cup | 159.8 g | 10 g |
| 1 cup | 213 g | 13.3 g |
| 1 1/2 cups | 319.5 g | 20 g |
| 2 cups | 426 g | 26.6 g |
| 3 cups | 639 g | 39.9 g |
| 4 cups | 852 g | 53.2 g |
The tablespoon column is a bonus for recipes that call for a spoonful or two: one tablespoon of brown sugar weighs about 13.3 g. Remember that a cup is 16 tablespoons, so the numbers in the table are just the cup weight divided by 16, rounded to one decimal place. For small amounts a scale that reads to the gram is far more reliable than a spoon, because a heaped tablespoon can weigh half as much again as a level one.
How the weight was measured
Packed means pressing the ingredient firmly into the measuring cup until it holds its shape when turned out. This applies to brown sugar and other moist sugars, where the packing is part of the measurement itself. A loosely filled cup of the same ingredient can weigh 40 g less, so packing is not optional.
The source for the 213 g figure is King Arthur Baking, and the confidence in the value is high. King Arthur Baking publishes a standard ingredient weight chart that recipe developers use as a reference, and this page follows it exactly rather than averaging across sources, because an average of two different measuring methods is a number that matches nobody's cup. There is a dispute worth knowing about. Packed firmly, per King Arthur; loosely spooned brown sugar weighs about 170 g per cup, so packing matters more than brand. The practical advice is simple: use the value in the table above, measure the way the table describes, and your results will match the recipes this site is built around. If a recipe you are following was written with a different value, follow that recipe's value instead of ours, because consistency within one recipe matters more than which authoritative number you pick.
Worked examples
A batch of chocolate chip cookies
A cookie recipe asking for 1 cup of brown sugar needs 213 g. Cookies are sensitive to sugar: too much and they spread into thin crisps, too little and they stay pale and cakey. Weighing 213 g keeps the spread exactly where the recipe intended.
A caramel sauce for a dessert
A caramel that starts with 1 1/2 cups of brown sugar needs 319.5 g. Caramel is unforgiving about ratios, and an extra 20 g of sugar changes how fast it colours and how bitter it gets. Weigh the sugar, and the caramel behaves predictably.
Halving a cake recipe
Halving a cake that uses 2 cups of brown sugar means 1 cup, or 213 g. It is tempting to halve by eye, but sugar is a structural ingredient in cake, so weighing 213 g keeps the crumb tender and the crust golden.
When this conversion matters most
This conversion matters most when a recipe depends on sugar for more than sweetness. In candy making, sugar is heated to a precise temperature, and the amount decides whether you get soft fudge or hard toffee. In baking, sugar holds moisture and delays setting, so the wrong amount changes the bake time as well as the flavour. It also matters for anyone tracking sugar intake, because weighing gives a true number while a cup can hide an extra 20 g.
Common mistakes with brown sugar
- Heaping the cup. A heaped cup of sugar can add 15 to 20 g. Always level the top with the back of a knife.
- Packing granulated sugar. Granulated sugar should be spooned and levelled, not packed. Packing is only for brown sugar, where it is part of the measurement.
- Swapping sugars cup for cup. Brown sugar, caster sugar and powdered sugar all weigh differently per cup, so swapping them by volume changes the recipe. Convert by weight instead.
- Forgetting that sugar is hygroscopic. Sugar absorbs moisture from the air, so a cup measured on a humid day can weigh slightly more. Keep sugar sealed and weigh it when precision matters.
Storage and handling
Airtight container with a clay disc or bread slice to stop it hardening. Keeping brown sugar stored properly also keeps its weight per cup stable: an ingredient that has absorbed moisture from the air weighs more per cup than a dry one, so a sealed container is not just about freshness, it is about measurement accuracy too. If a bag has been open for months in a humid kitchen, the first thing to do before a precise bake is to weigh the ingredient rather than trusting the cup.
Frequently asked questions
How many grams is 1 cup of brown sugar?
1 cup of brown sugar weighs 213 g, measured packed according to King Arthur Baking. That is the figure to use when converting a recipe from cups to grams, and it is the value the conversion table on this page is built on.
How do I measure brown sugar without a scale?
Packed means pressing the ingredient firmly into the measuring cup until it holds its shape when turned out. This applies to brown sugar and other moist sugars, where the packing is part of the measurement itself. A loosely filled cup of the same ingredient can weigh 40 g less, so packing is not optional. That gives the closest result to 213 g per cup, but it is still an estimate: the honest answer is that a scale is the only way to know the exact weight, and a basic digital kitchen scale costs less than a bag of good flour.
Does brown sugar always weigh the same per cup?
No. Brand, grind, moisture and how settled the container is all shift the weight by a few grams, and for flour the swing can be 20 g or more. The 213 g figure is the standard King Arthur Baking value for brown sugar measured packed, and it is the right default, but when a recipe is precise, weigh the ingredient and trust the scale over the cup.
Why do different websites give different weights for brown sugar?
Because they are measuring different things. Packed firmly, per King Arthur; loosely spooned brown sugar weighs about 170 g per cup, so packing matters more than brand. A source that scoops will always report a heavier cup than a source that spoons and levels, and both can be correct about their own method. The fix is to pick one source and one method and stick with it for the whole recipe.
How should I store brown sugar?
Airtight container with a clay disc or bread slice to stop it hardening. Good storage keeps the ingredient fresh and keeps its weight per cup consistent, because moisture absorbed from the air adds grams that the recipe did not ask for.
What is brown sugar used for?
Cookies, barbecue sauces, glazes and oatmeal. White sugar coated in molasses; light and dark differ only in molasses content.
Related conversions
Use the cups to grams converter or the grams to cups converter for instant answers, or browse the cups to grams hub for the full ingredient list. Related pages: Granulated Sugar in cups to grams, Honey in cups to grams, Powdered Sugar in cups to grams, 213 g of brown sugar in cups. More tools: cups to grams converter, grams to cups converter, sugar substitute converter, weight converter. See also our disclaimer about approximate conversions.