Peanut Butter, Smooth, Reduced Fat: How Many Grams in a Cup?

Grain-size is the main driver: finer crystals of Peanut Butter, Smooth, Reduced Fat settle tighter and push a cup past its nominal weight.

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 Peanut Butter, Smooth, Reduced Fat (1.217 g/mL). Values rounded; real weight varies by brand, packing and temperature. Full sources in the tool on ChefSolver.

Reference table

Peanut Butter, Smooth, Reduced Fat — cups to grams
Cupsg
1/8 cup36
1/4 cup72
1/3 cup96
1/2 cup144
2/3 cup192
3/4 cup216
1 cup288
1 1/2 cups432
2 cups576

FAQ

Does Peanut Butter, Smooth, Reduced Fat from a bulk bin weigh the same as pre-packaged?
The ingredient itself yes, but bulk bins may have more humidity and settling. For precise baking, weigh; for cooking, the difference is minor.
Does humidity add weight to Peanut Butter, Smooth, Reduced Fat over time?
A little — dry granules absorb ambient moisture and can gain 1–2 % mass in humid environments. Store airtight to keep the table values close to nominal.

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