Whey protein powder: Ounces (oz) to Grams Conversion

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

ozg
128
257
385
4113
5142
8227
10283
12340
15425
20567
25709
30850
401134
501417

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

FAQ

Does the brand of Whey protein powder change the gram value meaningfully?
For most household brands, no — density varies <5 %. Professional bakery variants (e.g. high-protein, strong-rise) may differ more; check the package label.
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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