Convert US fluid ounces to US teaspoons
1 US fluid ounce is 6 tsp. One US fluid ounce is exactly 6 US teaspoons.
One US fluid ounce is 6 US teaspoons. To convert US fluid ounces to US teaspoons, multiply by 6; to go the other way, divide by 6 or multiply by 0.16666667. The factor is exact rather than rounded: it follows from NIST Handbook 130. Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly.
Factor checked against the defining standard · How we check
- US fluid ounces × 6
1 * 66 tsp
1 US fluid ounce in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 6 tsp | × 6 |
| US tablespoons | 2 tbsp | × 2 |
| US fluid ounces (as entered) | 1 fl oz | — |
| US cups | 0.125 cup | × 0.125 |
| US pints | 0.0625 pt | × 0.0625 |
| US quarts | 0.03125 qt | × 0.03125 |
| US gallons | 0.0078125 gal | × 0.0078125 |
| milliliters | 29.57352956 ml | × 29.5735295625 |
| liters | 0.02957352956 L | × 0.0295735295625 |
| imperial gallons | 0.006505267067 gal (UK) | × 0.00650526706741 |
| imperial quarts | 0.02602106827 qt (UK) | × 0.0260210682697 |
| imperial pints | 0.05204213654 pt (UK) | × 0.0520421365393 |
| imperial fluid ounces | 1.040842731 fl oz (UK) | × 1.04084273079 |
| imperial gills | 0.2081685462 gi (UK) | × 0.208168546157 |
| cubic millimetres | 29,573.52956 mm³ | × 29,573.5295625 |
| cubic centimetres | 29.57352956 cm³ | × 29.5735295625 |
| cubic inches | 1.8046875 in³ | × 1.8046875 |
| cubic feet | 0.00104437934 ft³ | × 0.00104437934028 |
| cubic yards | 0.00003868071631 yd³ | × 0.0000386807163066 |
| cubic metres | 0.00002957352956 m³ | × 0.0000295735295625 |
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 do you convert US fluid ounces to US teaspoons? The converter and the working
- 1.Take the measurement in US fluid ounces.
- 2.Multiply by 6 — that is how many US teaspoons fit in one US fluid ounce.
- 3.To go back the other way, divide by 6, or multiply by 0.16666667.
Worked example: 25 US fluid ounces to US teaspoons
- Formula
- fl oz × 6 = tsp
- Arithmetic
- 25 × 6 = 150 tsp
- Answer
- 25 fl oz = 150 tsp
The factor is exact, so this figure is exact too — only the display is rounded.
US fluid ounces to US teaspoons conversion table
| US fluid ounces | US teaspoons |
|---|---|
| 1 fl oz | 6 tsp |
| 2 fl oz | 12 tsp |
| 3 fl oz | 18 tsp |
| 4 fl oz | 24 tsp |
| 5 fl oz | 30 tsp |
| 6 fl oz | 36 tsp |
| 7 fl oz | 42 tsp |
| 8 fl oz | 48 tsp |
| 9 fl oz | 54 tsp |
| 10 fl oz | 60 tsp |
| 12 fl oz | 72 tsp |
| 15 fl oz | 90 tsp |
| 20 fl oz | 120 tsp |
| 25 fl oz | 150 tsp |
| 50 fl oz | 300 tsp |
| 100 fl oz | 600 tsp |
| 200 fl oz | 1,200 tsp |
| 300 fl oz | 1,800 tsp |
| 500 fl oz | 3,000 tsp |
| 1000 fl oz | 6,000 tsp |
| 2000 fl oz | 12,000 tsp |
| 5000 fl oz | 30,000 tsp |
| 10000 fl oz | 60,000 tsp |
What is a US fluid ounce?
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.
What is a US teaspoon?
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.
How many US teaspoons are in a US fluid ounce?
One US fluid ounce is 6 US teaspoons, exactly. Going the other way, one US teaspoon is 0.16666667 US fluid ounces. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to a US fluid ounce.
Cite this page
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Questions people actually ask
- How many US teaspoons are in a US fluid ounce?
- 6. 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.
- How do I convert US teaspoons back to US fluid ounces?
- Divide by 6, or multiply by 0.16666667 — they are the same operation.
Other volume conversions
US teaspoons to US fluid ounces — the same conversion the other way.