⅓ cup peanut butter in grams
⅓ cup of peanut butter = 86 grams · 3.03 oz · 5.33 tbsp
That is a third of a cup, spooned in and pressed level, after stirring the jar back together. A full US cup of peanut butter weighs 258 g, so ⅓ cup comes to 86 g. Use the converter for any other amount.
Based on a measured density of 258 g per US cup (236.6 ml), stirred, then spooned and levelled. Last reviewed .
How ⅓ cup of peanut butter works out
One US cup of peanut butter weighs 258 grams, so multiply by 0.333 to get a third of a cup: 258 × 0.333 = 86 g. In the other direction, 86 g of peanut butter divided by 258 brings you back to ⅓ cup.
If you have no scales, ⅓ cup is 5.333 level tablespoons of peanut butter (16 teaspoons), because a US cup holds 16 tablespoons. In a 250 ml metric cup — the Australian, New Zealand and modern UK standard — the same fraction is 90.9 g.
Tip: Stir natural peanut butter thoroughly to recombine the oil before measuring, and lightly oil the cup so the sticky butter releases cleanly.
Other peanut butter amounts
⅓ cup of peanut butter: common questions
How many grams is ⅓ cup of peanut butter?
⅓ cup of peanut butter weighs about 86 grams (3.03 oz), based on a full US cup of peanut butter weighing 258 grams.
How many tablespoons is ⅓ cup of peanut butter?
5.333 level tablespoons, since a US cup holds 16 tablespoons. That is 16 teaspoons.
Is ⅓ cup the same in a metric cup?
No. A 250 ml metric cup is slightly larger than the 236.6 ml US cup, so ⅓ cup of peanut butter is 90.9 grams by the metric cup against 86 grams by the US cup.
For every other amount, see the full peanut butter cups to grams tables.