How to Measure Brown Sugar (Packed vs Loose)

Brown sugar behaves differently from every other sugar in your pantry. It is moist, it clumps, and it holds whatever shape you press it into. That is exactly why measuring it by cup is so inconsistent — and why recipes almost always say packed.

What "packed" means

Packed brown sugar is pressed firmly into the measuring cup with the back of a spoon until it is dense and level. When you tip it out, it should hold the shape of the cup like a sandcastle. Unless a recipe specifically says "loosely packed" or "lightly packed," assume packed — it is the standard.

How much does a cup weigh?

• 1 cup packed brown sugar = 213 g
• ¾ cup = 160 g
• ½ cup = 107 g
• ⅓ cup = 71 g
• ¼ cup = 53 g

Loosely packed, the same cup might weigh only 145 g — a difference big enough to change how a cookie spreads. See the brown sugar converter for any amount.

Keeping brown sugar soft

Brown sugar hardens when it dries out. Store it in an airtight container with a terracotta sugar saver or a slice of bread. If it has already gone rock-hard, microwave it next to a damp paper towel for 20 seconds, or warm it in a low oven briefly.

The accurate way

Because "packed" depends on how strong your spoon arm is, brown sugar is one of the best arguments for a scale. Weigh 213 g and you get exactly one cup, no pressing required.