Teaspoons to Ounces Conversion Calculator

Enter the volume in teaspoons below to calculate the weight in ounces.


Result in Ounces:

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1 tsp = 0.17386259276 oz

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How to Convert Teaspoons to Ounces

Since teaspoons are a unit of volume and ounces are a unit of mass, which are different physical quantities, we need to know one more physical quantity of the ingredient or substance to convert between them. In this case, we need to account for the density of the substance whenever we do a conversion.

Therefore, to convert between teaspoons and ounces of an ingredient or substance, we must either multiply or divide by its density, depending on which direction we are performing the conversion.

Teaspoons to Ounces Formula

To convert a measurement in teaspoons to ounces, multiply the volume by the density of the ingredient, substance, or material. Note that in order for this to work, the density must be in ounces per teaspoon (oz/tsp).

If the density is given in grams per milliliter (g/mL), then first divide the density by 5.7517 to convert to oz/tsp.

For a density given in g/mL, you can use this simple formula to convert:

ounces = teaspoons × density / 5.7517

Thus, the weight in ounces is equal to the volume in teaspoons times the density (in g/mL) of the ingredient or material divided by 5.7517.

For example, here's how to convert 5 teaspoons to ounces for an ingredient with a density of 0.7 g/mL.
ounces = 5 tsp × 0.7 g/mL / 5.7517 = 0.6085 oz

This formula is for converting to ounces in weight, if you're trying to convert to a volume measurement in fluid ounces, try our teaspoons to fluid ounces calculator.

When to Convert Teaspoons to Ounces

Teaspoons and ounces are both commonly used to measure cooking ingredients.

For cooking applications, most chefs suggest measuring dry ingredients by weight rather than volume to improve accuracy in the measurements.[1] The density of dry ingredients can vary for a variety of reasons, such as compaction and clumping.

The best way to ensure an accurate conversion is to use a scale. When a scale is not available, a calculator like the one above is a good way to estimate the volume to weight conversion.

For cooking and baking ingredients, you can get more specific results using our butter, flour, and sugar conversion calculators.

Another useful application of weight and volume conversions is chemistry. When performing chemical reactions by combining separate chemicals to produce a new chemical, one must know the exact amount of each chemical to add in order to maximize the yield of the reaction.

It is common to mix powdered chemicals with liquid, or aqueous, chemicals, and this is where it becomes very useful to convert between weights and volumes.[2]

Keep reading to learn more about each unit of measure.

What Is a Teaspoon?

The teaspoon is a unit of volume equal to 1/3 of a tablespoon or 1/6 of a fluid ounce.[3] One teaspoon is equal to approximately 4.929 milliliters, but in nutrition labeling, one teaspoon is equal to exactly 5 milliliters.[4]

The teaspoon is a US customary unit of volume. Teaspoons can be abbreviated as tsp, and are also sometimes abbreviated as t, ts, or tspn. For example, 1 teaspoon can be written as 1 tsp, 1 t, 1 ts, or 1 tspn.

Learn more about teaspoons.

What Is an Ounce?

One ounce is a unit of mass/weight equal to 1/16 of a pound or 28.349523 grams. The common ounce should not be confused with the troy ounce, which is equal to 1/12 of a troy pound.[5]

The ounce is a US customary and imperial unit of mass. Ounces can be abbreviated as oz; for example, 1 ounce can be written as 1 oz.

An ounce is also frequently referred to as a unit of weight. While technically, an ounce is a measure of mass, and weight is actually a measure of force, the two are equivalent as long as we are performing our calculations on Earth.

For example, an object with a mass of 1 ounce weighs 1 ounce on Earth, but only weighs one-sixth of that on the moon, yet still has the same mass.

Learn more about ounces.

Teaspoon to Ounce Conversion Table

Teaspoon measurements converted to ounces for commonly used cooking and baking ingredients.
Volume in Teaspoons: Weight in Ounces of:
Water Milk Cooking Oil All Purpose Flour Granulated Sugar
1/8 tsp 0.021733 oz 0.022385 oz 0.019125 oz 0.011497 oz 0.018372 oz
1/4 tsp 0.043466 oz 0.04477 oz 0.03825 oz 0.022993 oz 0.036744 oz
1/3 tsp 0.057954 oz 0.059693 oz 0.051 oz 0.030658 oz 0.048992 oz
1/2 tsp 0.086931 oz 0.089539 oz 0.0765 oz 0.045987 oz 0.073487 oz
2/3 tsp 0.115908 oz 0.119386 oz 0.101999 oz 0.061316 oz 0.097983 oz
3/4 tsp 0.130397 oz 0.134309 oz 0.114749 oz 0.06898 oz 0.110231 oz
1 tsp 0.173863 oz 0.179078 oz 0.152999 oz 0.091973 oz 0.146975 oz


  1. National Institute of Standards & Technology, Culinary Measurement Tips, https://www.nist.gov/pml/owm/culinary-measurement-tips
  2. CK-12 Foundation, Introductory Chemistry (CK-12) - 12.6: Mass-Volume Stoichiometry, https://chem.libretexts.org/Bookshelves/Introductory_Chemistry/Introductory_Chemistry_(CK-12)/12%3A_Stoichiometry/12.06%3A_Mass-Volume_Stoichiometry
  3. Florida Department of Agriculture and Consumer Services, Cooking Conversion Guide, https://www.fdacs.gov/content/download/17165/file/P-01775.pdf
  4. U.S. Food & Drug Administration, Guidance for Industry: Guidelines for Determining Metric Equivalents of Household Measures, https://www.fda.gov/regulatory-information/search-fda-guidance-documents/guidance-industry-guidelines-determining-metric-equivalents-household-measures
  5. James Bucki, Troy Ounce vs. Ounce, The Spruce, https://www.thesprucecrafts.com/troy-ounce-vs-ounce-4588158

More Teaspoon & Ounce Conversions