Whey protein powder: How Many Grams in a Cup?

Whey protein powder is a concentrated dairy protein supplement for shakes, smoothies, and post-workout recovery.

Quick convert

  • US cup = 236.588 mL
  • 1 tbsp = 14.787 mL
  • 1 tsp = 4.929 mL

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Based on the measured density of Whey protein powder (0.56 g/mL). Values rounded; real weight varies by brand, packing and temperature. Full sources in the tool on ChefSolver.

Reference table

Whey protein powder — cups to grams
Cupsg
1/8 cup17
1/4 cup33
1/3 cup44
1/2 cup66
2/3 cup88
3/4 cup99
1 cup132
1 1/2 cups199
2 cups265

Weigh in grams for precise macro tracking. Most standard scoops hold 70 mL and weigh about 39 g.

FAQ

Does sifting Whey protein powder change the cup weight?
Yes — sifted Whey protein powder is lighter per cup because of added air. The table uses unsifted values; reduce by 15–20 % for sifted recipes.
Is it safe to swap Whey protein powder for a similar powder at the same gram weight?
For structure/mass yes, but leavening strength varies — baking powder is ~3× weaker than baking soda at equal mass. Check the chemistry, not just the weight.

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