Convert Imperial fluid ounces to Imperial quarts
1 imperial fluid ounce is 0.03 qt (UK). One imperial fluid ounce is exactly 0.025 imperial quarts.
One imperial fluid ounce is 0.025 imperial quarts. To convert imperial fluid ounces to imperial quarts, multiply by 0.025; to go the other way, divide by 0.025 or multiply by 40. The factor is exact rather than rounded: it follows from NIST Handbook 130. One 160th of an imperial gallon, 28.4130625 ml exactly.
Factor checked against the defining standard · How we check
- Imperial fluid ounces × 0.025
1 * 0.0250.025 qt (UK)
1 imperial fluid ounce in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 5.764559642 tsp | × 5.76455964242 |
| US tablespoons | 1.921519881 tbsp | × 1.92151988081 |
| US fluid ounces | 0.9607599404 fl oz | × 0.960759940404 |
| US cups | 0.1200949926 cup | × 0.12009499255 |
| US pints | 0.06004749628 pt | × 0.0600474962752 |
| US quarts | 0.03002374814 qt | × 0.0300237481376 |
| US gallons | 0.007505937034 gal | × 0.00750593703441 |
| milliliters | 28.4130625 ml | × 28.4130625 |
| liters | 0.0284130625 L | × 0.0284130625 |
| imperial gallons | 0.00625 gal (UK) | × 0.00625 |
| imperial quarts | 0.025 qt (UK) | × 0.025 |
| imperial pints | 0.05 pt (UK) | × 0.05 |
| imperial fluid ounces (as entered) | 1 fl oz (UK) | — |
| imperial gills | 0.2 gi (UK) | × 0.2 |
| cubic millimetres | 28,413.0625 mm³ | × 28,413.0625 |
| cubic centimetres | 28.4130625 cm³ | × 28.4130625 |
| cubic inches | 1.733871455 in³ | × 1.73387145495 |
| cubic feet | 0.001003397833 ft³ | × 0.00100339783272 |
| cubic yards | 0.00003716288269 yd³ | × 0.0000371628826935 |
| cubic metres | 0.0000284130625 m³ | × 0.0000284130625 |
Factors are entered by hand from NIST Handbook 130 rather than derived from a units library, so the ones that terminate are exact rather than rounded.
How do you convert imperial fluid ounces to imperial quarts? The converter and the working
- 1.Take the measurement in imperial fluid ounces.
- 2.Multiply by 0.025 — that is how many imperial quarts fit in one imperial fluid ounce.
- 3.To go back the other way, divide by 0.025, or multiply by 40.
Worked example: 25 imperial fluid ounces to imperial quarts
- Formula
- fl oz (UK) × 0.025 = qt (UK)
- Arithmetic
- 25 × 0.025 = 0.63 qt (UK)
- Answer
- 25 fl oz (UK) = 0.63 qt (UK)
The factor is exact, so this figure is exact too — only the display is rounded.
Imperial fluid ounces to imperial quarts conversion table
| Imperial fluid ounces | Imperial quarts |
|---|---|
| 1 fl oz (UK) | 0.03 qt (UK) |
| 2 fl oz (UK) | 0.05 qt (UK) |
| 3 fl oz (UK) | 0.08 qt (UK) |
| 4 fl oz (UK) | 0.1 qt (UK) |
| 5 fl oz (UK) | 0.13 qt (UK) |
| 6 fl oz (UK) | 0.15 qt (UK) |
| 7 fl oz (UK) | 0.18 qt (UK) |
| 8 fl oz (UK) | 0.2 qt (UK) |
| 9 fl oz (UK) | 0.23 qt (UK) |
| 10 fl oz (UK) | 0.25 qt (UK) |
| 12 fl oz (UK) | 0.3 qt (UK) |
| 15 fl oz (UK) | 0.38 qt (UK) |
| 20 fl oz (UK) | 0.5 qt (UK) |
| 25 fl oz (UK) | 0.63 qt (UK) |
| 50 fl oz (UK) | 1.25 qt (UK) |
| 100 fl oz (UK) | 2.5 qt (UK) |
| 200 fl oz (UK) | 5 qt (UK) |
| 300 fl oz (UK) | 7.5 qt (UK) |
| 500 fl oz (UK) | 12.5 qt (UK) |
| 1000 fl oz (UK) | 25 qt (UK) |
| 2000 fl oz (UK) | 50 qt (UK) |
| 5000 fl oz (UK) | 125 qt (UK) |
| 10000 fl oz (UK) | 250 qt (UK) |
What is an imperial fluid ounce?
One 160th of an imperial gallon, 28.4130625 ml exactly. The US fluid ounce is one 128th of a smaller gallon at 29.57 ml, so the two ounces differ by about 4% in the opposite direction to the gallons.
What is an imperial quart?
A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.
How many imperial quarts are in an imperial fluid ounce?
One imperial fluid ounce is 0.025 imperial quarts, exactly. Going the other way, one imperial quart is 40 imperial fluid ounces. Both figures come from the same defined relation rather than from a measurement, which is why they are the same today as they were in 1959.
Every volume unit here
The whole group — 20 units with their symbols and the size of each one in liters — is on the conversion index, along with every pair it makes. The table above already gives each of them relative to an imperial fluid ounce.
Cite this page
- APA
- Rule Calculator. (2026). Convert Imperial fluid ounces to imperial quarts. Rule Calculator. https://rulecalculators.com/convert/imperial-fluid-ounce-to-imperial-quart
- MLA
- "Convert Imperial fluid ounces to imperial quarts." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/imperial-fluid-ounce-to-imperial-quart.
- Chicago
- Rule Calculator. "Convert Imperial fluid ounces to imperial quarts." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/imperial-fluid-ounce-to-imperial-quart.
The date is when the figures on this page were last checked against their source, not the day you opened it. Add your own access date if your style needs one.
Questions people actually ask
- How many imperial quarts are in an imperial fluid ounce?
- 0.025. A quarter of an imperial gallon, 1.1365225 liters exactly. It is larger than a US quart by the same fifth that separates the two gallons.
- How do I convert imperial quarts back to imperial fluid ounces?
- Divide by 0.025, or multiply by 40 — they are the same operation.
Other volume conversions
Imperial quarts to imperial fluid ounces — the same conversion the other way.