Do I fill to the brim or to the measurement line?

Fill to the line and read at eye level where the meniscus bottoms out. Filling to the brim overshoots the cup by 3–5 %.

Sports drink, PEPSICO QUAKER GATORADE, original, fruit-flavored, ready-to-drink: How Many Grams in a Cup?

By Fidamen-Chefsolver Team | Reviewed by Ugo Candido

Original fruit-flavored Gatorade is ~1.028 g/mL. Weighing is cleaner and ensures consistent carbs/electrolytes when mixing or portioning.

Ingredient

Do I fill to the brim or to the measurement line?: Fill to the line and read at eye level where the meniscus bottoms out. Filling to the brim overshoots the cup by 3–5 %.
Can I substitute Sports drink, PEPSICO QUAKER GATORADE, original, fruit-flavored, ready-to-drink with plain water in these gram values?: For density purposes yes — both are near 1 g/mL, so the cup/tbsp-to-gram conversion barely changes. Flavor and recipe chemistry are a separate question.