Cups to Grams Converter

Convert recipe cup volumes to exact gram mass for baking. Select your ingredient and cup standard to calculate precise gram weights.

120 Grams (g)
Calculation: 1 US Customary Cup of All-Purpose Flour
Reference Density: 120g per US Customary Cup (King Arthur Baking)
Converting Volume to Mass
1 US Customary Cup of All-Purpose Flour weighs 120 grams (spooned & leveled). 1 cup of Granulated Sugar weighs 198 grams. 1 cup of Butter weighs 227 grams (2 sticks).
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Cups to Grams Conversion Reference Table

Baking with a digital scale in grams ensures consistent results every time. Below is a quick conversion reference showing how many grams 1 cup, ½ cup, ⅓ cup, and ¼ cup weigh for popular ingredients using standard US Customary Cups (236.6 mL).

Ingredient 1 Cup (g) ¾ Cup (g) ½ Cup (g) ⅓ Cup (g) ¼ Cup (g)
All-Purpose Flour (spooned)120g90g60g40g30g
Granulated Sugar198g149g99g66g50g
Butter (1 stick = ½ cup)227g170g113.5g76g57g
Brown Sugar (packed)213g160g107.5g71g53g
Powdered Sugar (unsifted)113g85g56.5g38g28g
Rolled Oats89g67g44.5g30g22g
Uncooked White Rice185g139g92.5g62g46g
Honey336g252g168g112g84g
Cooking Oil216g162g108g72g54g
Whole Milk244g183g122g81g61g

Explore Ingredient Guides

All-Purpose Flour 120g/cup reference Granulated Sugar 198g/cup reference Butter 227g/cup • Cups, sticks & tbsp