This converter turns US quarts into cubic inches instantly, using the exact factor 1 US quart = 57.75 cubic inches. Type any number and the result updates as you go — nothing is sent to a server, so the arithmetic happens entirely in your browser.
A quarter of a US gallon, just under one litre. The volume of a one-inch cube, traditional for US engine displacement.
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 quarts- The amount you are converting, measured in US quarts
57.75- The exact number of cubic inches in one US quart
cubic inches- The converted result
How it works, step by step
- Enter the number of US quarts you want to convert.
- The value is multiplied by 57.75, the exact conversion factor.
- The result is displayed in cubic inches, rounded for readability.
- The unrounded value and the reverse conversion appear underneath so you can verify it.
Worked examples
Converting 5 US quarts
Multiply 5 by 57.75. That gives 288.75 cubic inches. A quick sanity check: one US quart is larger than one cubic inch, so the number should get bigger — and it does.
Converting 72 US quarts
72 × 57.75 = 4,158 cubic inches. Working backwards, 4,158 ÷ 57.75 returns 72 US quarts, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many cubic inches are in one US quart?
Exactly 57.75. 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 quarts to cubic inches?
Cubic Inches = US quarts × 57.75. To reverse it, divide instead: US quarts = cubic inches ÷ 57.75, which is the same as multiplying by 0.01731601732.
Is the US quart bigger than the cubic inch?
Yes. One US quart equals 57.75 cubic inches, so it is the larger unit.
Why does my answer differ slightly from other quarts to cubic-inches 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 quart?
A quarter of a US gallon, just under one litre.
What is a cubic inch?
The volume of a one-inch cube, traditional for US engine displacement.
Us Quarts to cubic inches reference table
| Us Quarts | Cubic Inches |
|---|---|
| 0.5 qt | 28.875 in³ |
| 1 qt | 57.75 in³ |
| 2 qt | 115.5 in³ |
| 3 qt | 173.25 in³ |
| 5 qt | 288.75 in³ |
| 10 qt | 577.5 in³ |
| 15 qt | 866.25 in³ |
| 20 qt | 1,155 in³ |
| 25 qt | 1,443.75 in³ |
| 50 qt | 2,887.5 in³ |
| 75 qt | 4,331.25 in³ |
| 100 qt | 5,775 in³ |
| 250 qt | 14,437.5 in³ |
| 500 qt | 28,875 in³ |
| 1000 qt | 57,750 in³ |
Exact factor: 1 US quart = 57.75 cubic inches. Values rounded for display.