A cup of butter is equal to 2 sticks of butter.

Additional info:

• Each stick of butter typically weighs 4 ounces (113 grams).
• 1 cup of butter = 8 ounces (227 grams).
• In recipes, if you see "1 cup butter," just use 2 sticks.

If you need help with any other cooking conversions, feel free to ask!