How Much Is 21.1 Tablespoons of Peanut Butter in Ounces?
21.1 tablespoons of peanut butter weighs 12.00 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 21.1 tablespoons.
Formula and Step-by-Step
- Start with 21.1 tablespoons of peanut butter
- 1 tablespoon of peanut butter = 16.13g
- 21.1 × 16.13 = 340.24g
- Convert grams to ounces: 340.24 ÷ 28.3495 = 12.00 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Spoon peanut butter into the measuring spoon and pack gently to fill gaps. Do not scoop directly from the jar, which traps air.
Peanut Butter at Different Amounts
How peanut butter scales across common tablespoons measurements. Your amount (21.1 tablespoons) is highlighted.
For reference, 21.1 tablespoons of peanut butter (340.24g) is close in weight to a can of soda (355g).
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 |
| 16 tablespoons | 9.10 oz | 9.23 oz | 12.31 oz |
| 21.1 tablespoons | 12.00 oz | 12.17 oz | 16.23 oz |
Understanding the Units
What is a Tablespoon?
Tablespoon sizes differ by country. A US tablespoon is 14.787 ml, close to the 15 ml metric standard used in most countries. An Australian tablespoon is 20 ml, about 35% larger than US. An imperial tablespoon is 17.758 ml. If your recipe comes from Australia, the larger tablespoon size can make a real difference.
What is an Ounce?
Ounces are commonly used in US recipes for cheese, meat, chocolate, and other ingredients sold by weight. Many kitchen scales offer both gram and ounce readings.