This converter turns US quarts into milliliters instantly, using the exact factor 1 US quart = 946.352946 milliliters. 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. One thousandth of a litre, equal to one cubic centimetre.
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
946.352946- The exact number of milliliters in one US quart
milliliters- The converted result
How it works, step by step
- Enter the number of US quarts you want to convert.
- The value is multiplied by 946.352946, the exact conversion factor.
- The result is displayed in milliliters, 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 946.35295. That gives 4,731.76 milliliters. A quick sanity check: one US quart is larger than one milliliter, so the number should get bigger — and it does.
Converting 72 US quarts
72 × 946.35295 = 68,137.41 milliliters. Working backwards, 68,137.41 ÷ 946.35295 returns 72 US quarts, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many milliliters are in one US quart?
Exactly 946.352946. 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 milliliters?
Milliliters = US quarts × 946.352946. To reverse it, divide instead: US quarts = milliliters ÷ 946.352946, which is the same as multiplying by 0.001056688209.
Is the US quart bigger than the milliliter?
Yes. One US quart equals 946.353 milliliters, so it is the larger unit.
Why does my answer differ slightly from other quarts to ml 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 milliliter?
One thousandth of a litre, equal to one cubic centimetre.
Us Quarts to milliliters reference table
| Us Quarts | Milliliters |
|---|---|
| 0.5 qt | 473.1765 mL |
| 1 qt | 946.3529 mL |
| 2 qt | 1,892.71 mL |
| 3 qt | 2,839.06 mL |
| 5 qt | 4,731.76 mL |
| 10 qt | 9,463.53 mL |
| 15 qt | 14,195.29 mL |
| 20 qt | 18,927.06 mL |
| 25 qt | 23,658.82 mL |
| 50 qt | 47,317.65 mL |
| 75 qt | 70,976.47 mL |
| 100 qt | 94,635.29 mL |
| 250 qt | 236,588.24 mL |
| 500 qt | 473,176.47 mL |
| 1000 qt | 946,352.95 mL |
Exact factor: 1 US quart = 946.352946 milliliters. Values rounded for display.