US teaspoon to US fluid ounce Converter
1 tsp = 0.166667 fl oz — convert instantly with formula and table.
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Quick answer: one us teaspoon equals 0.166667 US fluid ounces. So to convert US teaspoons to US fluid ounces, multiply by 0.16666667.
How to convert US teaspoons to US fluid ounces
US fluid ounces = US teaspoons × 0.1666666667
The US teaspoon is defined as exactly 4.92892159375 ml — one third of a tablespoon — and anchors small quantities in American recipes.
The US fluid ounce is about 29.57 ml — slightly larger than the UK fluid ounce. Eight fluid ounces make a US cup.
US teaspoon to US fluid ounce conversion table
| US teaspoon (tsp) | US fluid ounce (fl oz) |
|---|---|
| 0.01 tsp | 0.001667 fl oz |
| 0.1 tsp | 0.016667 fl oz |
| 0.25 tsp | 0.041667 fl oz |
| 0.4 tsp | 0.066667 fl oz |
| 0.75 tsp | 0.125 fl oz |
| 1.25 tsp | 0.208333 fl oz |
| 1.75 tsp | 0.291667 fl oz |
| 2.5 tsp | 0.416667 fl oz |
| 3.5 tsp | 0.583333 fl oz |
| 4.5 tsp | 0.75 fl oz |
| 6 tsp | 1 fl oz |
| 8 tsp | 1.3333 fl oz |
| 10 tsp | 1.6667 fl oz |
| 12 tsp | 2 fl oz |
| 14 tsp | 2.3333 fl oz |
| 16 tsp | 2.6667 fl oz |
| 18 tsp | 3 fl oz |
| 20 tsp | 3.3333 fl oz |
| 24 tsp | 4 fl oz |
| 26 tsp | 4.3333 fl oz |
| 30 tsp | 5 fl oz |
| 35 tsp | 5.8333 fl oz |
| 45 tsp | 7.5 fl oz |
| 55 tsp | 9.1667 fl oz |
| 65 tsp | 10.8333 fl oz |
| 75 tsp | 12.5 fl oz |
| 85 tsp | 14.1667 fl oz |
| 95 tsp | 15.8333 fl oz |
| 110 tsp | 18.3333 fl oz |
| 125 tsp | 20.8333 fl oz |
| 175 tsp | 29.1667 fl oz |
| 250 tsp | 41.6667 fl oz |
| 350 tsp | 58.3333 fl oz |
| 450 tsp | 75 fl oz |
| 600 tsp | 100 fl oz |
| 750 tsp | 125 fl oz |
| 900 tsp | 150 fl oz |
| 1,500 tsp | 250 fl oz |
| 2,500 tsp | 416.6667 fl oz |
| 10,000 tsp | 1,666.67 fl oz |
Need the opposite direction? Use the US fluid ounce to US teaspoon converter, or read our complete guide to volume conversions for every formula in one place.
Frequently asked questions
How many US fluid ounces are in one us teaspoon?
One us teaspoon equals 0.166667 US fluid ounces. Multiply any us teaspoon value by 0.16666667 to get US fluid ounces.
What is 10 US teaspoons in US fluid ounces?
10 US teaspoons equal 1.6667 US fluid ounces (10 × 0.166667).
Is the us teaspoon to us fluid ounce conversion exact?
The conversion factor used here (0.1666666667) is based on the internationally agreed definitions of both units, so results are exact up to rounding of the final decimal places.
Is my data stored when I use this converter?
No. The conversion runs entirely in your browser with JavaScript — nothing you type is sent to a server, logged or stored.