Volume conversion
US teaspoon to US fluid ounce converter
Convert tsp to fl oz instantly, choose the displayed precision, and verify the result with the formula and reference table below.
US fluid ounce (fl oz)
Rounded for display only; calculations retain full precision.
Rounding and precision rules
- Convr calculates first and rounds the displayed result only once, at the final step.
- The default is a maximum of 6 decimal places; trailing zeros are removed.
- Very small values that would appear as zero, and values of 10¹² or more, use scientific notation.
- Display precision is not measurement uncertainty. For scientific, engineering, or regulated work, retain only the digits justified by the source measurement.
Calculation
US teaspoon to US fluid ounce formula
fl oz = tsp × 0.166667
Calculations retain full precision and the result is rounded only for display.
Worked example
For 10 tsp, the result is 1.666667 fl oz. Substitute 10 tsp into the formula to obtain 1.666667 fl oz.
A numerical value expressed in us fluid ounce is usually smaller than the same measurement expressed in us teaspoon, because 1 tsp equals 0.166667 fl oz.
US teaspoon to US fluid ounce reference table
Common values rounded to a maximum of 6 decimal places.
| US teaspoon (tsp) | US fluid ounce (fl oz) |
|---|---|
| 1 tsp | 0.166667 fl oz |
| 5 tsp | 0.833333 fl oz |
| 10 tsp | 1.666667 fl oz |
| 50 tsp | 8.333333 fl oz |
| 100 tsp | 16.666667 fl oz |
Understanding the units
About US teaspoon and US fluid ounce
US teaspoon (tsp)
One us teaspoon (tsp) equals 0.004928922 L, the base relationship used for this volume conversion.
US fluid ounce (fl oz)
One us fluid ounce (fl oz) equals 0.02957353 L, the base relationship used for this volume conversion.
When this conversion is useful
US teaspoon to US fluid ounce conversion is useful for recipes, beverage quantities, fuel volumes, laboratory measurements, and container capacities. It lets you compare the same volume or capacity across documents, tools, or standards that use different units.
Learn with Convr
Conversion guides
Metric vs Imperial Units: A Practical Comparison
Understand how metric, US customary, and Imperial units differ, where each system is used, and how to convert between them reliably.
Read guide →Everyday conversionsUS Gallons vs Imperial Gallons: What Is the Difference?
Compare US liquid gallons and Imperial gallons, understand their exact liter values, and avoid common fuel and recipe conversion errors.
Read guide →Answers at a glance
Frequently asked questions
How do you convert US teaspoon to US fluid ounce?
Use the formula fl oz = tsp × 0.166667. Enter any value in the converter above to calculate the result instantly.
How many us fluid ounce are in one us teaspoon?
One us teaspoon equals 0.166667 us fluid ounce.
How does Convr round US teaspoon to US fluid ounce results?
Convr keeps full numeric precision during the calculation and rounds only the displayed result. The default is a maximum of 6 decimal places, with selectable precision on this page.
Can I convert negative or decimal us teaspoon values?
Yes. The converter accepts positive, negative, decimal, and scientific-notation values. Negative values are physically meaningful for some scales, such as temperature, but not for every measured quantity.
Keep converting