This converter turns teaspoons into US quarts instantly, using the exact factor 1 teaspoon = 0.005208333333 US quarts. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
The smallest standard kitchen measure, 4.93 millilitres. A quarter of a US gallon, just under one litre.
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
teaspoons- The amount you are converting, measured in teaspoons
0.005208333333- The exact number of US quarts in one teaspoon
US quarts- The converted result
How it works, step by step
- Enter the number of teaspoons you want to convert.
- The value is multiplied by 0.005208333333, the exact conversion factor.
- The result is displayed in US quarts, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 teaspoons
Multiply 5 by 0.0052083333. That gives 0.026042 US quarts. A quick sanity check: one teaspoon is smaller than one US quart, so the number should get smaller — and it does.
Converting 72 teaspoons
72 × 0.0052083333 = 0.375 US quarts. Working backwards, 0.375 ÷ 0.0052083333 returns 72 teaspoons, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many US quarts are in one teaspoon?
Exactly 0.005208333333. 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 teaspoons to US quarts?
Us Quarts = teaspoons × 0.005208333333. To reverse it, divide instead: teaspoons = US quarts ÷ 0.005208333333, which is the same as multiplying by 192.
Is the teaspoon bigger than the US quart?
No. One teaspoon is only 0.00520833 of a US quart, so the US quart is the larger unit.
Why does my answer differ slightly from other teaspoons to quarts 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 teaspoon?
The smallest standard kitchen measure, 4.93 millilitres.
What is a US quart?
A quarter of a US gallon, just under one litre.
Teaspoons to US quarts reference table
| Teaspoons | Us Quarts |
|---|---|
| 0.5 tsp | 0.002604 qt |
| 1 tsp | 0.005208 qt |
| 2 tsp | 0.010417 qt |
| 3 tsp | 0.015625 qt |
| 5 tsp | 0.026042 qt |
| 10 tsp | 0.052083 qt |
| 15 tsp | 0.078125 qt |
| 20 tsp | 0.104167 qt |
| 25 tsp | 0.130208 qt |
| 50 tsp | 0.260417 qt |
| 75 tsp | 0.390625 qt |
| 100 tsp | 0.520833 qt |
| 250 tsp | 1.3021 qt |
| 500 tsp | 2.6042 qt |
| 1000 tsp | 5.2083 qt |
Exact factor: 1 teaspoon = 0.005208333333 US quarts. Values rounded for display.