How Much Is 15.5 Tablespoons of Peanut Butter in Ounces?
15.5 tablespoons of peanut butter weighs 8.82 oz. This is based on peanut butter having a density of 258g per cup. Because tablespoons measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 15.5 tablespoons.
Formula and Step-by-Step
- Start with 15.5 tablespoons of peanut butter
- 1 tablespoon of peanut butter = 16.13g
- 15.5 × 16.13 = 249.94g
- Convert grams to ounces: 249.94 ÷ 28.3495 = 8.82 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Peanut butter weighs 258g per cup. Natural and processed versions may have slightly different densities.
Peanut Butter at Different Amounts
How peanut butter scales across common tablespoons measurements. Your amount (15.5 tablespoons) is highlighted.
For reference, 15.5 tablespoons of peanut butter (249.94g) is close in weight to a cup of water (237g).
Other Amounts of Peanut Butter
| Tablespoons | US Ounces | Metric Tablespoon | Australian Tablespoon |
|---|---|---|---|
| 1 tablespoon | 0.57 oz | 0.58 oz | 0.77 oz |
| 2 tablespoons | 1.14 oz | 1.15 oz | 1.54 oz |
| 3 tablespoons | 1.71 oz | 1.73 oz | 2.31 oz |
| 4 tablespoons | 2.28 oz | 2.31 oz | 3.08 oz |
| 5 tablespoons | 2.84 oz | 2.88 oz | 3.85 oz |
| 6 tablespoons | 3.41 oz | 3.46 oz | 4.62 oz |
| 8 tablespoons | 4.55 oz | 4.62 oz | 6.15 oz |
| 10 tablespoons | 5.69 oz | 5.77 oz | 7.69 oz |
| 12 tablespoons | 6.83 oz | 6.92 oz | 9.23 oz |
| 15.5 tablespoons | 8.82 oz | 8.94 oz | 11.92 oz |
| 16 tablespoons | 9.10 oz | 9.23 oz | 12.31 oz |
Understanding the Units
What is a Tablespoon?
A tablespoon (tbsp) is a US customary unit of volume equal to 14.787 milliliters, 3 teaspoons, or 1/16 of a cup. It is commonly used for measuring smaller amounts of ingredients.
What is an Ounce?
An ounce (oz) is a US customary unit of weight equal to 28.3495 grams or 1/16 of a pound. In cooking, "ounces" refers to weight (avoirdupois ounces), not fluid ounces which measure volume.