Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 fl oz | 0.006 tsp | |
| 0.01 fl oz | 0.06 tsp | |
| 0.1 fl oz | 0.6 tsp | |
| 1 fl oz | 6 tsp | |
| 5 fl oz | 30 tsp | |
| 10 fl oz | 60 tsp | |
| 50 fl oz | 300 tsp | |
| 100 fl oz | 600 tsp | |
| 1000 fl oz | 6000 tsp |
Common fluid ounce values converted to teaspoon — factor: 1 fl oz = 6 tsp
| Fluid Ounce (fl oz) | Teaspoon (tsp) | Context |
|---|---|---|
| 0.5 fl oz | 3 tsp | Half ounce |
| 1 fl oz | 6 tsp | Shot |
| 2 fl oz | 12 tsp | Double shot |
| 4 fl oz | 24 tsp | Half cup |
| 6 fl oz | 36 tsp | One cup |
| 8 fl oz | 48 tsp | One cup |
| 12 fl oz | 72 tsp | Soda can |
| 16 fl oz | 96 tsp | One pint |
| 20 fl oz | 120 tsp | Large cup |
| 32 fl oz | 192 tsp | One quart |
| 64 fl oz | 384 tsp | Half gallon |
| 128 fl oz | 768 tsp | One gallon |
| 256 fl oz | 1,536 tsp | 2 gallons |
| 512 fl oz | 3,072 tsp | 4 gallons |
| 1,024 fl oz | 6,144 tsp | 8 gallons |
Converting fluid ounce to teaspoon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using teaspoon, or a laboratory protocol may specify volumes in fluid ounce that need to be measured with equipment calibrated in teaspoon.
In everyday use, knowing that 5 fl oz = 30 tsp and 10 fl oz = 60 tsp covers most common situations. For bulk calculations, 100 fl oz = 600 tsp is a useful anchor. The reverse conversion — teaspoon back to fluid ounce — uses the factor 0.1667, so 1 tsp = 0.1667 fl oz.
All conversions use the internationally recognized factor of exactly 1 fl oz = 6 tsp. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Teaspoon = Fluid Ounce × 5.9999959
Multiply any fluid ounce value by 5.9999959 to get teaspoon. One fluid ounce equals 5.9999959 tsp.
Reverse: Fluid Ounce = Teaspoon × 0.16666678
Fluid ounces × 6 = teaspoons. One fl oz = exactly 6 teaspoons.
½ fl oz = 3 tsp = 1 tbsp. 8 fl oz = 48 tsp = 1 cup.
Teaspoons ÷ 6 = fl oz.
Labels product nutrition facts and serving sizes in fluid ounces as required by FDA.
Measures spirit pours and mixers in fl oz using jiggers for cocktail consistency.
Tracks soda fountain syrup and cup sizes (12, 16, 20, 32 fl oz) for inventory.
Designs bottle fill levels in fluid ounces for US retail compliance.
Recommends daily fluid intake for children in fluid ounces by age group.
Compares unit prices per fluid ounce on beverage labels to find the best value.
The US fluid ounce is defined as 1/128 of a US gallon, exactly 29.5735 mL. The US and UK fl oz differ: the US is 29.57 mL while the Imperial fl oz is 28.41 mL.
Fluid ounces appear on every US beverage container: a soda can is 12 fl oz, a water bottle is 16.9 fl oz, and a US shot glass is 1.5 fl oz.
Interesting fact: Despite sharing the name 'ounce', the fluid ounce measures volume, not weight. One fl oz of water weighs about 1.04 oz, but one fl oz of honey weighs about 1.5 oz.
The US teaspoon is exactly one-third of a tablespoon, 4.92892 mL. It was standardized in the US in the early 20th century partly to address inconsistent home medication dosing.
Teaspoons are the smallest standard cooking measure in the US system, used for spices, leaveners, and flavorings. A medical teaspoon dose conventionally means 5 mL.
Interesting fact: The teaspoon is behind one of science's most cited comparisons: the entire Pacific Ocean would fill roughly 7.1 × 10²³ teaspoons.