Convert US teaspoons to US fluid ounces
1 US teaspoon is 0.166667 fl oz. One US teaspoon is exactly 0.166666666667 US fluid ounces.
US fluid ounces
0.166667 fl oz
- US teaspoons × 0.16666667
value * 0.1666666666670.167 fl oz
1 US teaspoon in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons (as entered) | 1 tsp | — |
| US tablespoons | 0.3333333333 tbsp | × 0.333333333333 |
| US fluid ounces | 0.1666666667 fl oz | × 0.166666666667 |
| US cups | 0.02083333333 cup | × 0.0208333333333 |
| US pints | 0.01041666667 pt | × 0.0104166666667 |
| US quarts | 0.005208333333 qt | × 0.00520833333333 |
| US gallons | 0.001302083333 gal | × 0.00130208333333 |
| millilitres | 4.928921594 ml | × 4.92892159375 |
| litres | 0.004928921594 L | × 0.00492892159375 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How to convert
- 1.Take the measurement in US teaspoons.
- 2.Multiply by 0.16666667 — that is how many US fluid ounces fit in one US teaspoon.
- 3.To go back the other way, divide by 0.16666667, or multiply by 6.
US teaspoons to US fluid ounces conversion table
| US teaspoons | US fluid ounces |
|---|---|
| 1 tsp | 0.166667 fl oz |
| 2 tsp | 0.333333 fl oz |
| 3 tsp | 0.5 fl oz |
| 4 tsp | 0.666667 fl oz |
| 5 tsp | 0.833333 fl oz |
| 6 tsp | 1 fl oz |
| 7 tsp | 1.166667 fl oz |
| 8 tsp | 1.333333 fl oz |
| 9 tsp | 1.5 fl oz |
| 10 tsp | 1.666667 fl oz |
| 12 tsp | 2 fl oz |
| 15 tsp | 2.5 fl oz |
| 20 tsp | 3.333333 fl oz |
| 25 tsp | 4.166667 fl oz |
| 50 tsp | 8.333333 fl oz |
| 100 tsp | 16.666667 fl oz |
The two units
- US teaspoon (tsp)
- One third of a tablespoon, about 4.93 ml. A metric teaspoon is a round 5 ml, which is why recipes rarely notice the difference.
- US fluid ounce (fl oz)
- Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly. The imperial fluid ounce is a different unit at exactly 28.4130625 ml, so a UK recipe calling for 10 fl oz means 284 ml and a US one means 296 ml. It is also a volume, not a weight: an ounce of flour is not a fluid ounce of flour.
Questions people actually ask
- How many US fluid ounces are in a US teaspoon?
- 0.16666667. Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly. The imperial fluid ounce is a different unit at exactly 28.4130625 ml, so a UK recipe calling for 10 fl oz means 284 ml and a US one means 296 ml. It is also a volume, not a weight: an ounce of flour is not a fluid ounce of flour.
- How do I convert US fluid ounces back to US teaspoons?
- Divide by 0.16666667, or multiply by 6 — they are the same operation.
Other volume conversions
US fluid ounces to US teaspoons — the same conversion the other way.