How Much Is 18 Teaspoons of Mayonnaise in Ounces?
Converting 18 teaspoons of mayonnaise to ounces gives 2.91 oz. One teaspoon of mayonnaise weighs 4.58g, so 18 teaspoons is 18 × 4.58 = 82.5g (2.91 oz). This conversion is specific to mayonnaise because each ingredient has a different density.
Formula and Step-by-Step
- Start with 18 teaspoons of mayonnaise
- 1 teaspoon of mayonnaise = 4.58g
- 18 × 4.58 = 82.5g
- Convert grams to ounces: 82.5 ÷ 28.3495 = 2.91 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Mayonnaise should be spooned into the measuring spoon and leveled off. Do not scoop directly from the jar, which traps air.
Mayonnaise at Different Amounts
How mayonnaise scales across common teaspoons measurements. Your amount (18 teaspoons) is highlighted.
For reference, 18 teaspoons of mayonnaise (82.5g) is close in weight to a deck of playing cards (94g).
Other Amounts of Mayonnaise
| Teaspoons | US Ounces | Metric Teaspoon | Imperial Teaspoon |
|---|---|---|---|
| 0.25 teaspoons | 0.04 oz | 0.04 oz | 0.05 oz |
| 0.5 teaspoons | 0.08 oz | 0.08 oz | 0.10 oz |
| 1 teaspoon | 0.16 oz | 0.16 oz | 0.19 oz |
| 1.5 teaspoons | 0.24 oz | 0.25 oz | 0.29 oz |
| 2 teaspoons | 0.32 oz | 0.33 oz | 0.39 oz |
| 3 teaspoons | 0.49 oz | 0.49 oz | 0.58 oz |
| 4 teaspoons | 0.65 oz | 0.66 oz | 0.78 oz |
| 5 teaspoons | 0.81 oz | 0.82 oz | 0.97 oz |
| 6 teaspoons | 0.97 oz | 0.98 oz | 1.16 oz |
| 8 teaspoons | 1.29 oz | 1.31 oz | 1.55 oz |
| 18 teaspoons | 2.91 oz | 2.95 oz | 3.49 oz |
Understanding the Units
What is a Teaspoon?
A teaspoon (tsp) is a US customary unit of volume equal to 4.929 milliliters or 1/3 of a tablespoon. It is the standard measure for spices, leaveners, extracts, and other small-quantity ingredients.
What is an Ounce?
Weight ounces and fluid ounces are different measurements. A fluid ounce measures volume (29.574 ml), while an ounce measures weight (28.35g). They only align for water, where 1 fl oz weighs approximately 1 oz.