Teaspoons to Ounces Converter (tsp to oz)
How to convert teaspoons to ounces
Teaspoons measure volume; ounces measure mass. To convert between them you need the ingredient’s density — because a teaspoon of honey weighs much more than a teaspoon of flour, even though both fill the same spoon.
Step 1 — Know your teaspoon volume
One US teaspoon = exactly 4.92892 mL. A metric teaspoon (UK, Australia, Canada) = 5 mL. This calculator uses the US teaspoon.
Step 2 — Find your ingredient’s density
Density tells you how many grams fit in each millilitre. Water = 1.000 g/mL (the baseline). Dense ingredients like salt and honey give more grams per teaspoon. Light ingredients like flour and cocoa give fewer.
Step 3 — Apply the conversion formula
oz = tsp × 4.92892 × density ÷ 28.3495
Where 4.92892 = mL per US teaspoon · density is in g/mL · 28.3495 = grams per avoirdupois ounce
Example — 3 teaspoons of honey (density 1.42 g/mL):
3 × 4.92892 × 1.42 ÷ 28.3495 = 0.7408 oz
For fluid ounces (volume only, no density needed):
fl oz = tsp × 4.92892 ÷ 29.5735 → 1 tsp = 0.1667 fl oz · 6 tsp = 1 fl oz exactly
Teaspoons to ounces conversion table
Reference values for water (density 1.000 g/mL). For other ingredients use the calculator above.
| Teaspoons | Common measure | Weight oz | Fluid oz | Grams | mL |
|---|---|---|---|---|---|
| ⅛ tsp | — | 0.0217 oz | 0.0208 fl oz | 0.616 g | 0.616 mL |
| ¼ tsp | — | 0.0435 oz | 0.0417 fl oz | 1.232 g | 1.232 mL |
| ½ tsp | — | 0.0869 oz | 0.0833 fl oz | 2.464 g | 2.464 mL |
| 1 tsp | 1 teaspoon | 0.1739 oz | 0.1667 fl oz | 4.929 g | 4.929 mL |
| 2 tsp | — | 0.3479 oz | 0.3333 fl oz | 9.858 g | 9.858 mL |
| 3 tsp | 1 tablespoon | 0.5218 oz | 0.5000 fl oz | 14.787 g | 14.787 mL |
| 6 tsp | 2 tbsp / 1 fl oz | 1.0437 oz | 1.0000 fl oz | 29.574 g | 29.574 mL |
| 8 tsp | — | 1.3914 oz | 1.3333 fl oz | 39.431 g | 39.431 mL |
| 12 tsp | ¼ cup | 2.0873 oz | 2.0000 fl oz | 59.147 g | 59.147 mL |
| 16 tsp | ⅓ cup | 2.7830 oz | 2.6667 fl oz | 78.863 g | 78.863 mL |
| 24 tsp | ½ cup | 4.1746 oz | 4.0000 fl oz | 118.294 g | 118.294 mL |
| 48 tsp | 1 cup | 8.3491 oz | 8.0000 fl oz | 236.588 g | 236.588 mL |
Teaspoon to ounces by ingredient
What does 1 teaspoon weigh in ounces for each ingredient?
| Ingredient | Density (g/mL) | 1 tsp = oz | 1 tsp = grams |
|---|---|---|---|
| Water | 1.000 | 0.1739 oz | 4.929 g |
| Honey | 1.420 | 0.2469 oz | 6.999 g |
| Table salt | 1.217 | 0.2116 oz | 5.998 g |
| Soy sauce | 1.085 | 0.1886 oz | 5.348 g |
| Milk | 1.030 | 0.1791 oz | 5.077 g |
| Granulated sugar | 0.845 | 0.1469 oz | 4.165 g |
| Brown sugar | 0.720 | 0.1252 oz | 3.549 g |
| Butter | 0.911 | 0.1584 oz | 4.490 g |
| Vegetable oil | 0.920 | 0.1599 oz | 4.534 g |
| Olive oil | 0.909 | 0.1580 oz | 4.480 g |
| All-purpose flour | 0.529 | 0.0919 oz | 2.607 g |
| Baking soda | 0.690 | 0.1199 oz | 3.401 g |
| Baking powder | 0.720 | 0.1252 oz | 3.549 g |
| Cocoa powder | 0.520 | 0.0904 oz | 2.563 g |
| Cornstarch | 0.600 | 0.1043 oz | 2.957 g |
| Cinnamon | 0.560 | 0.0974 oz | 2.760 g |
| Garlic powder | 0.500 | 0.0869 oz | 2.464 g |
| Black pepper | 0.450 | 0.0782 oz | 2.218 g |
| Dry active yeast | 0.750 | 0.1304 oz | 3.696 g |
Key facts and unit definitions
Frequently asked questions
How many teaspoons are in an ounce? +
There are approximately 5.745 teaspoons in 1 weight ounce of water. For fluid ounces, there are exactly 6 teaspoons in 1 US fluid ounce. The count varies by ingredient — see the density table above.
How do you convert teaspoons to ounces? +
Formula: oz = tsp × 4.92892 × density ÷ 28.3495
For water: 1 tsp = 1 × 4.92892 × 1.0 ÷ 28.3495 = 0.1739 oz. For fluid ounces: fl oz = tsp ÷ 6
What is 1 teaspoon in ounces? +
1 tsp water = 0.1739 oz (weight) or 0.1667 fl oz. By ingredient: sugar = 0.1469 oz · flour = 0.0919 oz · salt = 0.2116 oz · honey = 0.2469 oz · butter = 0.1584 oz.
How many teaspoons in a fluid ounce? +
Exactly 6 teaspoons = 1 US fluid ounce. (1 fl oz = 29.5735 mL ÷ 4.92892 mL per tsp = 6 exactly.)
Weight ounces vs fluid ounces — what’s the difference? +
Weight oz measures mass. Fluid oz measures volume. For water, 1 fl oz ≈ 1.043 oz. For denser or lighter ingredients the gap grows. US liquid recipes use fl oz; dry goods use weight oz.
How many teaspoons in ¼ oz? +
For water, 0.25 oz ≈ 1.436 teaspoons. Switch the calculator to oz → tsp mode and enter 0.25 for any ingredient.
Is a US teaspoon the same as a metric teaspoon? +
No. US teaspoon = 4.92892 mL. Metric teaspoon = 5 mL. The 1.4% difference matters in precision baking. This calculator uses the US teaspoon.
How many ounces is a teaspoon of salt? +
1 tsp of table salt ≈ 0.2116 oz (6 g). Salt density = 1.217 g/mL, making it heavier per teaspoon than water or most kitchen ingredients.
Why do different recipes give different conversions? +
Because density differs by ingredient. Many online converters assume water density for everything. A tsp of honey weighs 2.7× more than a tsp of flour. This calculator uses ingredient-specific densities from food science databases.