Convert US Fluid Ounce to US Teaspoon
Convert us fluid ounces to us teaspoons instantly. 1 us fluid ounce = 6 us teaspoon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Teaspoon to US Fluid Ounce converter for the reverse conversion.
Units explained
US Fluid Ounce
A US fluid ounce is 1/128 of a US gallon (29.5735 mL).
Derived from the gallon subdivision; distinct from the slightly smaller UK fluid ounce.
Standard for US beverage and nutrition labeling.
English customary; US since 1824.
US Teaspoon
A US teaspoon is one third of a US tablespoon (4.9289 mL).
A standardized small cooking measure.
Used everywhere in US recipes and home dosing.
US cooking measure.
US Fluid Ounce to US Teaspoon conversion formula
The relationship between us fluid ounces and us teaspoons:
To convert us fluid ounces to us teaspoons, multiply the value in us fluid ounces by 6. To reverse, multiply us teaspoons by 0.1666666667.
How to use this converter
Type a value into the calculator. The result in us teaspoons updates as you type. Tap a quick value, copy the result with one click, or use the swap arrow to jump straight to the US Teaspoon to US Fluid Ounce converter for the reverse direction.
Step-by-step: convert us fluid ounces to us teaspoons
- Write down the value in us fluid ounces (fl oz).
- Multiply that value by the factor 6.
- The product is the equivalent value in us teaspoons (tsp).
- To reverse, multiply the us teaspoon value by 0.1666666667.
Worked examples
Example 1 — Convert 1 fl oz to tsp:
1 × 6 = 6 tsp
Example 2 — Convert 100 fl oz to tsp:
100 × 6 = 600 tsp
Real-world example — Hair-width scale measurements
A 70-us fluid ounce measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like us teaspoons for direct comparison across supplier datasheets.
70 fl oz × 6 = 420 tsp
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 us fluid ounces), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 fl oz × 6 = 18 tsp
Real-world example — Plastic-film thickness alternates
A 150-us fluid ounce plastic film converts cleanly to us teaspoons — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 fl oz × 6 = 900 tsp
US Fluid Ounce to US Teaspoon conversion table
Standard reference values for converting us fluid ounces to us teaspoons:
| US Fluid Ounce [fl oz] | US Teaspoon [tsp] |
|---|---|
| 0.01 | 0.06 |
| 0.1 | 0.6 |
| 1 | 6 |
| 2 | 12 |
| 3 | 18 |
| 4 | 24 |
| 5 | 30 |
| 10 | 60 |
| 20 | 120 |
| 30 | 180 |
| 40 | 240 |
| 50 | 300 |
| 100 | 600 |
| 500 | 3000 |
| 1000 | 6000 |
Frequently asked questions
How many us teaspoons is 1 us fluid ounce?
How do I convert us fluid ounces to us teaspoons?
How do I convert us teaspoons back to us fluid ounces?
How many us teaspoons is 100 us fluid ounces?
Popular volume unit conversions
Convert US Fluid Ounce to other volume units
Show all US Fluid Ounce conversions
Metric / SI (8 units)
US Customary (Liquid) (7 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (3 units)
Sources & references
Conversion factor (1 fl oz = 6 tsp) verified against the following authoritative sources:
- BIPM — The International System of Units (SI Brochure 9th ed.)
Official BIPM publication defining the seven SI base units (including the meter) and the rules for their use. The global authority on units of measurement.
- NIST — Guide to the SI
US National Institute of Standards and Technology reference covering the SI base and derived units with definitions and usage rules for US technical practice.
- NIST Special Publication 811 — Guide for the Use of the International System of Units
Detailed NIST guide covering exact conversion factors between SI and US customary units along with formatting and rounding conventions.
- NIST — Refinement of values for the yard and pound (Federal Register 1959)
The treaty (signed by US
- International Astronomical Union — System of Astronomical Constants
The IAU defines astronomical units including the AU (149597870700 m exactly) light-year and parsec used in astronomy and astrophysics.