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Volume
Fluid ounces to Teaspoons
Convert fluid ounces (fl oz) to teaspoons (tsp). Type a value below to see the result update instantly. Reference table and formula included.
Calculator
1 fl oz = 6 tsp
Fluid ounces to Teaspoons Conversion Table
Common values, ready to copy:
| fluid ounces | teaspoons |
|---|---|
| 1 fl oz | 6 tsp |
| 2 fl oz | 12 tsp |
| 5 fl oz | 30 tsp |
| 10 fl oz | 60 tsp |
| 25 fl oz | 150 tsp |
| 50 fl oz | 300 tsp |
| 100 fl oz | 600 tsp |
| 1,000 fl oz | 6000 tsp |
Formula
teaspoons = fluid ounces × 5.99999594e+0
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
About Fluid ounces and Teaspoons
Fluid ounces (fl oz): 1/128 of a US gallon, or 29.5735 mL; the UK imperial fluid ounce is slightly different at 28.4131 mL, a remnant of pre-metric British measurement. Common uses: US beverage container sizes (a 12-oz soda can), US liquid recipe measurements, and UK pub measures for spirits (where a 'single' is 25 or 35 mL but historically tracked from imperial fl oz).
Teaspoons (tsp): Standardized at about 5 mL for cooking purposes; US legal definition is exactly 4.92892 mL, but international cooking convention uses 5 mL even in the US. Common uses: Small cooking measurements (spices, baking powder, vanilla extract), liquid medication dosing for adults (often 1 or 2 teaspoons = 5 or 10 mL).
How the conversion works
Volume conversions use US customary measure (the cup, fluid ounce, and gallon are US definitions, not imperial). 1 US cup = 236.588 mL, 1 US gallon = 3.785411784 L.
The exact relationship is teaspoons = fluid ounces × 5.99999594e+0, which the calculator at the top of this page applies in both directions. Type into either field and the other updates immediately.
When this conversion matters
Converting between fluid ounces and teaspoons comes up wherever volume measurements move between systems — from one country's conventions to another's, from a scientific reference to a practical specification, or from one industry's working unit to another's. The calculator and reference table above cover the everyday range; for unusual values you can type any number into either field.