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, COCA-COLA, POWERADE, lemon-lime flavored, ready-to-drink: How Many Grams in a Cup?

By Fidamen-Chefsolver Team | Reviewed by Chefsolver Staff

Ready-to-drink lemon-lime sports drinks are heavier than water (~1.028 g/mL) due to sugars and electrolytes. Weighing keeps hydration mixes precise.

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, COCA-COLA, POWERADE, lemon-lime 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.