Convert Cups of Peanut Butter to Ounces
1 cup of Peanut Butter =
9.0oz
Creamy; natural-style separates and may differ
Tools we use for accurate baking
As an Amazon Associate I earn from qualifying purchases.
Etekcity 0.1g Digital Kitchen Scale0.1g resolution — the level of precision yeast, salt, and baking soda need. 11lb capacity, stainless surface.
View on Amazon
Hudson Essentials Stainless Measuring Cups (6-Piece)Stackable, dishwasher-safe, magnetic snap handles. The home-cook standard — sturdy enough to last decades.
View on Amazon
Pyrex 3-Piece Glass Measuring Cup Set1-cup, 2-cup, and 4-cup glass cups with the iconic red lines. For liquids — clear marks at every standard volume.
View on Amazon
OXO Good Grips Stainless Flour SifterSingle-handed squeeze mechanism. Aerates flour for accurate measuring — sifted flour weighs ~5g less per cup.
View on Amazon
Frequently Asked Questions
How many grams are in 1 cup of Peanut Butter?
One US cup of Peanut Butter weighs approximately 256g. This is the standard reference weight used by King Arthur Baking and the USDA. Use a kitchen scale for the most accurate measurement; volume measurement can vary by 5-10% depending on how you scoop.
Should I use a scale or measuring cups for Peanut Butter?
A digital kitchen scale is more accurate than measuring cups for Peanut Butter. Volume measurement varies by how you scoop or pack the cup, while weight is consistent. For recipes where precision matters (especially baking), weighing Peanut Butter at 256g per cup gives the most reliable result.
Where do these Peanut Butter conversion values come from?
The conversion values for Peanut Butter on this page come from the following authoritative sources: King Arthur Ingredient Weight Chart;USDA FDC #172470. We cross-reference multiple sources when they're available to ensure accuracy.