This converter turns US quarts into imperial fluid ounces instantly, using the exact factor 1 US quart = 33.30696739 imperial fluid ounces. 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 UK fluid ounce, about 4% smaller than its US counterpart.
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
33.30696739- The exact number of imperial fluid ounces in one US quart
imperial fluid ounces- The converted result
How it works, step by step
- Enter the number of US quarts you want to convert.
- The value is multiplied by 33.30696739, the exact conversion factor.
- The result is displayed in imperial fluid ounces, 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 33.306967. That gives 166.5348 imperial fluid ounces. A quick sanity check: one US quart is larger than one imperial fluid ounce, so the number should get bigger — and it does.
Converting 72 US quarts
72 × 33.306967 = 2,398.1 imperial fluid ounces. Working backwards, 2,398.1 ÷ 33.306967 returns 72 US quarts, which confirms the factor is applied the right way round.
How to read your score
Frequently asked questions
How many imperial fluid ounces are in one US quart?
Exactly 33.30696739. 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 imperial fluid ounces?
Imperial Fluid Ounces = US quarts × 33.30696739. To reverse it, divide instead: US quarts = imperial fluid ounces ÷ 33.30696739, which is the same as multiplying by 0.03002374814.
Is the US quart bigger than the imperial fluid ounce?
Yes. One US quart equals 33.307 imperial fluid ounces, so it is the larger unit.
Why does my answer differ slightly from other quarts to imperial-fluid-ounces 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 imperial fluid ounce?
The UK fluid ounce, about 4% smaller than its US counterpart.
Us Quarts to imperial fluid ounces reference table
| Us Quarts | Imperial Fluid Ounces |
|---|---|
| 0.5 qt | 16.6535 fl oz |
| 1 qt | 33.307 fl oz |
| 2 qt | 66.6139 fl oz |
| 3 qt | 99.9209 fl oz |
| 5 qt | 166.5348 fl oz |
| 10 qt | 333.0697 fl oz |
| 15 qt | 499.6045 fl oz |
| 20 qt | 666.1393 fl oz |
| 25 qt | 832.6742 fl oz |
| 50 qt | 1,665.35 fl oz |
| 75 qt | 2,498.02 fl oz |
| 100 qt | 3,330.7 fl oz |
| 250 qt | 8,326.74 fl oz |
| 500 qt | 16,653.48 fl oz |
| 1000 qt | 33,306.97 fl oz |
Exact factor: 1 US quart = 33.30696739 imperial fluid ounces. Values rounded for display.