This converter turns milliliters into US quarts instantly, using the exact factor 1 milliliter = 0.001056688209 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.
One thousandth of a litre, equal to one cubic centimetre. 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
milliliters- The amount you are converting, measured in milliliters
0.001056688209- The exact number of US quarts in one milliliter
US quarts- The converted result
How it works, step by step
- Enter the number of milliliters you want to convert.
- The value is multiplied by 0.001056688209, 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 milliliters
Multiply 5 by 0.0010566882. That gives 0.005283 US quarts. A quick sanity check: one milliliter is smaller than one US quart, so the number should get smaller — and it does.
Converting 72 milliliters
72 × 0.0010566882 = 0.076082 US quarts. Working backwards, 0.076082 ÷ 0.0010566882 returns 72 milliliters, 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 milliliter?
Exactly 0.001056688209. 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 milliliters to US quarts?
Us Quarts = milliliters × 0.001056688209. To reverse it, divide instead: milliliters = US quarts ÷ 0.001056688209, which is the same as multiplying by 946.352946.
Is the milliliter bigger than the US quart?
No. One milliliter is only 0.00105669 of a US quart, so the US quart is the larger unit.
Why does my answer differ slightly from other ml 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 milliliter?
One thousandth of a litre, equal to one cubic centimetre.
What is a US quart?
A quarter of a US gallon, just under one litre.
Milliliters to US quarts reference table
| Milliliters | Us Quarts |
|---|---|
| 0.5 mL | 0.000528 qt |
| 1 mL | 0.001057 qt |
| 2 mL | 0.002113 qt |
| 3 mL | 0.00317 qt |
| 5 mL | 0.005283 qt |
| 10 mL | 0.010567 qt |
| 15 mL | 0.01585 qt |
| 20 mL | 0.021134 qt |
| 25 mL | 0.026417 qt |
| 50 mL | 0.052834 qt |
| 75 mL | 0.079252 qt |
| 100 mL | 0.105669 qt |
| 250 mL | 0.264172 qt |
| 500 mL | 0.528344 qt |
| 1000 mL | 1.0567 qt |
Exact factor: 1 milliliter = 0.001056688209 US quarts. Values rounded for display.