1 US cup of peanut butter weighs 270 g = 9.52 oz, so 1 oz = 0.105 cups. Weight ounces are not fluid ounces: 8 fl oz always fills a cup, but 8 oz of peanut butter is 0.84 cups.
| Ounces (weight) | Grams | US cups | Tablespoons |
|---|---|---|---|
| 1 | 28 | 0.1 | 1.7 |
| 2 | 57 | 0.21 | 3.4 |
| 3 | 85 | 0.31 | 5 |
| 4 | 113 | 0.42 | 6.7 |
| 5 | 142 | 0.52 | 8.4 |
| 6 | 170 | 0.63 | 10.1 |
| 8 | 227 | 0.84 | 13.4 |
| 10 | 283 | 1.05 | 16.8 |
| 12 | 340 | 1.26 | 20.2 |
| 16 | 454 | 1.68 | 26.9 |
| 24 | 680 | 2.52 | 40.3 |
| 32 | 907 | 3.36 | 53.8 |
| US cups | Ounces | Grams |
|---|---|---|
| 1/8 | 1.19 | 34 |
| 1/4 | 2.38 | 68 |
| 1/3 | 3.17 | 90 |
| 1/2 | 4.76 | 135 |
| 2/3 | 6.35 | 180 |
| 3/4 | 7.14 | 202 |
| 1 | 9.52 | 270 |
| 1 1/2 | 14.29 | 405 |
| 2 | 19.05 | 540 |
| 3 | 28.57 | 810 |
| 4 | 38.1 | 1,080 |
See also peanut butter cups to grams.