How Much Is 18 Teaspoons of Olive Oil in Ounces?
18 teaspoons of olive oil weighs 2.86 oz. This is based on olive oil having a density of 216g per cup. Because teaspoons measure volume and ounces measure weight, the result depends on the ingredient, and a different ingredient would give a different result for the same 18 teaspoons.
Formula and Step-by-Step
- Start with 18 teaspoons of olive oil
- 1 teaspoon of olive oil = 4.5g
- 18 × 4.5 = 81g
- Convert grams to ounces: 81 ÷ 28.3495 = 2.86 oz
The same formula works for any amount. Multiply (or divide) by the density, then convert units as needed.
Measuring Tip
Liquid densities vary: oils weigh less per cup than water, while syrups and honey weigh more. This is why ingredient-specific conversions matter even for liquids.
Olive Oil at Different Amounts
How olive oil scales across common teaspoons measurements. Your amount (18 teaspoons) is highlighted.
For reference, 18 teaspoons of olive oil (81g) is close in weight to a deck of playing cards (94g).
Other Amounts of Olive Oil
| 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 | 0.24 oz | 0.29 oz |
| 2 teaspoons | 0.32 oz | 0.32 oz | 0.38 oz |
| 3 teaspoons | 0.48 oz | 0.48 oz | 0.57 oz |
| 4 teaspoons | 0.63 oz | 0.64 oz | 0.76 oz |
| 5 teaspoons | 0.79 oz | 0.81 oz | 0.95 oz |
| 6 teaspoons | 0.95 oz | 0.97 oz | 1.14 oz |
| 8 teaspoons | 1.27 oz | 1.29 oz | 1.52 oz |
| 18 teaspoons | 2.86 oz | 2.90 oz | 3.43 oz |
Understanding the Units
What is a Teaspoon?
One teaspoon holds about 5 milliliters. There are 3 teaspoons in a tablespoon and 48 teaspoons in a cup. Teaspoon accuracy matters most with leaveners like baking powder and baking soda, where small differences affect rise and texture.
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.