Convert Imperial Fluid Ounce to Metric Teaspoon
Convert imperial fluid ounces to metric teaspoons instantly. 1 imperial fluid ounce = 5.6826125 metric teaspoon — use the live calculator, the exact formula, a conversion table and worked examples. Also check the Metric Teaspoon to Imperial Fluid Ounce converter for the reverse conversion.
Units explained
Imperial Fluid Ounce
An imperial fluid ounce is 1/160 of an imperial gallon (28.4131 mL).
Defined so that ten fluid ounces make an imperial half-pint.
Used in UK and Commonwealth recipes and labels.
UK, 1824.
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.
Imperial Fluid Ounce to Metric Teaspoon conversion formula
The relationship between imperial fluid ounces and metric teaspoons:
To convert imperial fluid ounces to metric teaspoons, multiply the value in imperial fluid ounces by 5.6826125. To reverse, multiply metric teaspoons by 0.1759753986.
How to use this converter
Type a value into the calculator. The result in metric 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 Metric Teaspoon to Imperial Fluid Ounce converter for the reverse direction.
Step-by-step: convert imperial fluid ounces to metric teaspoons
- Write down the value in imperial fluid ounces (fl oz).
- Multiply that value by the factor 5.6826125.
- The product is the equivalent value in metric teaspoons (tsp).
- To reverse, multiply the metric teaspoon value by 0.1759753986.
Worked examples
Example 1 — Convert 1 fl oz to tsp:
1 × 5.6826125 = 5.6826125 tsp
Example 2 — Convert 100 fl oz to tsp:
100 × 5.6826125 = 568.26125 tsp
Real-world example — Plastic-film thickness alternates
A 150-imperial fluid ounce plastic film converts cleanly to metric teaspoons — useful for packaging buyers reconciling supplier datasheets across metric and US measurement systems.
150 fl oz × 5.6826125 = 852.391875 tsp
Real-world example — Hair-width scale measurements
A 70-imperial 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 metric teaspoons for direct comparison across supplier datasheets.
70 fl oz × 5.6826125 = 397.782875 tsp
Real-world example — Paper and film thicknesses
At the thickness of office paper (roughly 3 imperial fluid ounces), converting between sub-millimeter units is routine for packaging and printing buyers comparing quotes from metric and US suppliers.
3 fl oz × 5.6826125 = 17.0478375 tsp
Imperial Fluid Ounce to Metric Teaspoon conversion table
Standard reference values for converting imperial fluid ounces to metric teaspoons:
| Imperial Fluid Ounce [fl oz] | Metric Teaspoon [tsp] |
|---|---|
| 0.01 | 0.056826125 |
| 0.1 | 0.56826125 |
| 1 | 5.6826125 |
| 2 | 11.365225 |
| 3 | 17.0478375 |
| 4 | 22.73045 |
| 5 | 28.4130625 |
| 10 | 56.826125 |
| 20 | 113.65225 |
| 30 | 170.478375 |
| 40 | 227.3045 |
| 50 | 284.130625 |
| 100 | 568.26125 |
| 500 | 2841.30625 |
| 1000 | 5682.6125 |
Frequently asked questions
How many metric teaspoons is 1 imperial fluid ounce?
How do I convert imperial fluid ounces to metric teaspoons?
How do I convert metric teaspoons back to imperial fluid ounces?
How many metric teaspoons is 100 imperial fluid ounces?
Popular volume unit conversions
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Metric / SI (8 units)
US Customary (Liquid) (8 units)
Imperial (UK) (3 units)
Cubic (length-derived) (3 units)
Sources & references
Conversion factor (1 fl oz = 5.6826125 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.