ConvBolt — Unit ConverterFluid ounces to US quarts Converter
Converting fluid ounces to US quarts is a multiplication by a fixed factor: 1 fl oz = 0.03125 qt. The table below covers the values people look up most often, and the formula section shows exactly where that factor comes from.
Because one fluid ounce works out to 0.03125 qt, the us quart is the far smaller unit of the two: a figure given in us quart always carries a smaller number than the same measurement in fluid ounce. A chart drawn in fl oz can hide that, so check which label the axis uses before you compare two readings.
Kitchen and workshop measuring are where this pair comes up: a jug marked in fluid ounces alongside a recipe or container printed in US quarts is the classic case, and it is why the two labels rarely agree to the eye.
The conversion factor used here is 0.03125 qt per fluid ounce (5 significant digits as shown). Kept to seven figures it covers professional measurement; if you round it to two or three decimals for a spreadsheet, the error scales with the input — at a value of 1,000 fl oz a factor rounded to three decimals can be off by a measurable amount. The reverse direction uses 32 fl oz per qt, the exact reciprocal, so a round trip through both pages returns your original number.
Fluid ounces to US quarts formula
Use this formula to convert any fluid ounce value to US quarts:
Worked example: 100 fl oz × 0.03125 = 3.125 qt.
Fluid ounces to US quarts conversion table
| Fluid ounces (fl oz) | US quarts (qt) |
|---|---|
| 0.5 fl oz | 0.015625 qt |
| 1 fl oz | 0.03125 qt |
| 2 fl oz | 0.0625 qt |
| 5 fl oz | 0.15625 qt |
| 10 fl oz | 0.3125 qt |
| 20 fl oz | 0.625 qt |
| 50 fl oz | 1.5625 qt |
| 100 fl oz | 3.125 qt |
| 500 fl oz | 15.625 qt |
| 1000 fl oz | 31.25 qt |
How to convert fluid ounces to US quarts
Multiply the fluid ounce value by 0.03125 to get the equivalent in US quarts. This single factor works for every value in the table above and for anything else you need — there is no per-value adjustment, which is why a conversion table and a calculator always agree.
If you need the opposite direction, use the US quarts to Fluid ounces converter instead of dividing by hand; both pages use the same source factors. For every other fl oz conversion in one place, see the fl oz conversion hub.
Frequently asked questions
How many US quarts are in 1 fluid ounce?
1 fluid ounce = 0.03125 qt.
What is 100 fluid ounces in US quarts?
100 fl oz = 3.125 qt.
Is converting fluid ounces to US quarts the same as US quarts to fluid ounces?
No — the direction changes the multiplier. The reverse conversion (1 qt = 32 fl oz) is on the US quarts to Fluid ounces page.
Related conversions
Try the ConvBolt Unit Converter for any other volume unit, browse the Volume conversions, or read our conversion guides.