This converter turns US fluid ounces into teaspoons instantly, using the exact factor 1 US fluid ounce = 6 teaspoons. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
One eighth of a US cup, roughly 29.57 millilitres. The smallest standard kitchen measure, 4.93 millilitres.
Because the relationship is a simple proportion, one multiplication does the whole job. The table further down gives pre-computed values for the amounts people look up most often, and the result panel also reports the reverse conversion so you can check the figure both ways.
The formula
US fluid ounces- The amount you are converting, measured in US fluid ounces
6- The exact number of teaspoons in one US fluid ounce
teaspoons- The converted result
How it works, step by step
- Enter the number of US fluid ounces you want to convert.
- The value is multiplied by 6, the exact conversion factor.
- The result is displayed in teaspoons, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 US fluid ounces
Multiply 5 by 6. That gives 30 teaspoons. A quick sanity check: one US fluid ounce is larger than one teaspoon, so the number should get bigger — and it does.
Converting 72 US fluid ounces
72 × 6 = 432 teaspoons. Working backwards, 432 ÷ 6 returns 72 US fluid ounces, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many teaspoons are in one US fluid ounce?
Exactly 6. Every conversion on this page is that single number multiplied by your input, so the result carries no rounding error beyond what is shown.
What is the formula to convert US fluid ounces to teaspoons?
Teaspoons = US fluid ounces × 6. To reverse it, divide instead: US fluid ounces = teaspoons ÷ 6, which is the same as multiplying by 0.1666666667.
Is the US fluid ounce bigger than the teaspoon?
Yes. One US fluid ounce equals 6 teaspoons, so it is the larger unit.
Why does my answer differ slightly from other us-fluid-ounces to teaspoons converters?
Most differences come from rounding the factor too early. This tool keeps full double precision through the calculation and only rounds at the final display step, and it also shows the unrounded value so you can see exactly where any difference appears.
What is a US fluid ounce?
One eighth of a US cup, roughly 29.57 millilitres.
What is a teaspoon?
The smallest standard kitchen measure, 4.93 millilitres.
Us Fluid Ounces to teaspoons reference table
| Us Fluid Ounces | Teaspoons |
|---|---|
| 0.5 fl oz | 3 tsp |
| 1 fl oz | 6 tsp |
| 2 fl oz | 12 tsp |
| 3 fl oz | 18 tsp |
| 5 fl oz | 30 tsp |
| 10 fl oz | 60 tsp |
| 15 fl oz | 90 tsp |
| 20 fl oz | 120 tsp |
| 25 fl oz | 150 tsp |
| 50 fl oz | 300 tsp |
| 75 fl oz | 450 tsp |
| 100 fl oz | 600 tsp |
| 250 fl oz | 1,500 tsp |
| 500 fl oz | 3,000 tsp |
| 1000 fl oz | 6,000 tsp |
Exact factor: 1 US fluid ounce = 6 teaspoons. Values rounded for display.