Convert Metric Teaspoon to US Fluid Ounce
Convert metric teaspoons to us fluid ounces instantly. 1 metric teaspoon = 0.1690701135 us fluid ounce — use the live calculator, the exact formula, a conversion table and worked examples. Also check the US Fluid Ounce to Metric Teaspoon converter for the reverse conversion.
Units explained
Metric Teaspoon
A metric teaspoon is exactly 5 milliliters.
Adopted as the standard metric small cooking measure.
Universal in metric recipes and liquid medicine dosing.
Metrication.
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.
Metric Teaspoon to US Fluid Ounce conversion formula
The relationship between metric teaspoons and us fluid ounces:
To convert metric teaspoons to us fluid ounces, multiply the value in metric teaspoons by 0.1690701135. To reverse, multiply us fluid ounces by 5.9147059125.
How to use this converter
Type a value into the calculator. The result in us fluid ounces 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 Fluid Ounce to Metric Teaspoon converter for the reverse direction.
Step-by-step: convert metric teaspoons to us fluid ounces
- Write down the value in metric teaspoons (tsp).
- Multiply that value by the factor 0.1690701135.
- The product is the equivalent value in us fluid ounces (fl oz).
- To reverse, multiply the us fluid ounce value by 5.9147059125.
Worked examples
Example 1 — Convert 1 tsp to fl oz:
1 × 0.1690701135 = 0.1690701135 fl oz
Example 2 — Convert 100 tsp to fl oz:
100 × 0.1690701135 = 16.9070113509 fl oz
Real-world example — Hair-width scale measurements
A 70-metric teaspoon measurement (about the diameter of a human hair) is the kind of value materials engineers regularly express in adjacent micro-scale units like us fluid ounces for direct comparison across supplier datasheets.
70 tsp × 0.1690701135 = 11.8349079456 fl oz
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 metric teaspoons), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 tsp × 0.1690701135 = 0.5072103405 fl oz
Real-world example — Plastic-film thickness alternates
A 150-metric teaspoon plastic film converts cleanly to us fluid ounces — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 tsp × 0.1690701135 = 25.3605170264 fl oz
Metric Teaspoon to US Fluid Ounce conversion table
Standard reference values for converting metric teaspoons to us fluid ounces:
| Metric Teaspoon [tsp] | US Fluid Ounce [fl oz] |
|---|---|
| 0.01 | 0.0016907011 |
| 0.1 | 0.0169070114 |
| 1 | 0.1690701135 |
| 2 | 0.338140227 |
| 3 | 0.5072103405 |
| 4 | 0.676280454 |
| 5 | 0.8453505675 |
| 10 | 1.6907011351 |
| 20 | 3.3814022702 |
| 30 | 5.0721034053 |
| 40 | 6.7628045404 |
| 50 | 8.4535056755 |
| 100 | 16.9070113509 |
| 500 | 84.5350567546 |
| 1000 | 169.0701135092 |
Frequently asked questions
How many us fluid ounces is 1 metric teaspoon?
How do I convert metric teaspoons to us fluid ounces?
How do I convert us fluid ounces back to metric teaspoons?
How many us fluid ounces is 100 metric teaspoons?
Popular volume unit conversions
Convert Metric Teaspoon to other volume units
Show all Metric Teaspoon conversions
Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (4 units)
Cubic (length-derived) (3 units)
Cooking / Culinary (2 units)
Sources & references
Conversion factor (1 tsp = 0.1690701135 fl oz) 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 Hydrographic Organization — Resolution on the Nautical Mile
International authority that standardised the nautical mile at exactly 1852 m in 1929 — the value adopted worldwide for sea and air navigation.