Convert Imperial quarts to Imperial fluid ounces
1 imperial quart is 40 fl oz (UK). One imperial quart is exactly 40 imperial fluid ounces.
One imperial quart is 40 imperial fluid ounces. To convert imperial quarts to imperial fluid ounces, multiply by 40; to go the other way, divide by 40 or multiply by 0.025. The factor is exact rather than rounded: it follows from NIST Handbook 130. A quarter of an imperial gallon, 1.1365225 liters exactly.
Factor checked against the defining standard · How we check
- Imperial quarts × 40
1 * 4040 fl oz (UK)
1 imperial quart in every volume unit
| Unit | Value | Exact factor |
|---|---|---|
| US teaspoons | 230.5823857 tsp | × 230.582385697 |
| US tablespoons | 76.86079523 tbsp | × 76.8607952323 |
| US fluid ounces | 38.43039762 fl oz | × 38.4303976162 |
| US cups | 4.803799702 cup | × 4.80379970202 |
| US pints | 2.401899851 pt | × 2.40189985101 |
| US quarts | 1.200949926 qt | × 1.2009499255 |
| US gallons | 0.3002374814 gal | × 0.300237481376 |
| milliliters | 1,136.5225 ml | × 1,136.5225 |
| liters | 1.1365225 L | × 1.1365225 |
| imperial gallons | 0.25 gal (UK) | × 0.25 |
| imperial quarts (as entered) | 1 qt (UK) | — |
| imperial pints | 2 pt (UK) | × 2 |
| imperial fluid ounces | 40 fl oz (UK) | × 40 |
| imperial gills | 8 gi (UK) | × 8 |
| cubic millimetres | 1,136,522.5 mm³ | × 1,136,522.5 |
| cubic centimetres | 1,136.5225 cm³ | × 1,136.5225 |
| cubic inches | 69.3548582 in³ | × 69.3548581979 |
| cubic feet | 0.04013591331 ft³ | × 0.040135913309 |
| cubic yards | 0.001486515308 yd³ | × 0.00148651530774 |
| cubic metres | 0.0011365225 m³ | × 0.0011365225 |
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 quarts to imperial fluid ounces? The converter and the working
- 1.Take the measurement in imperial quarts.
- 2.Multiply by 40 — that is how many imperial fluid ounces fit in one imperial quart.
- 3.To go back the other way, divide by 40, or multiply by 0.025.
Worked example: 25 imperial quarts to imperial fluid ounces
- Formula
- qt (UK) × 40 = fl oz (UK)
- Arithmetic
- 25 × 40 = 1,000 fl oz (UK)
- Answer
- 25 qt (UK) = 1,000 fl oz (UK)
The factor is exact, so this figure is exact too — only the display is rounded.
Imperial quarts to imperial fluid ounces conversion table
| Imperial quarts | Imperial fluid ounces |
|---|---|
| 1 qt (UK) | 40 fl oz (UK) |
| 2 qt (UK) | 80 fl oz (UK) |
| 3 qt (UK) | 120 fl oz (UK) |
| 4 qt (UK) | 160 fl oz (UK) |
| 5 qt (UK) | 200 fl oz (UK) |
| 6 qt (UK) | 240 fl oz (UK) |
| 7 qt (UK) | 280 fl oz (UK) |
| 8 qt (UK) | 320 fl oz (UK) |
| 9 qt (UK) | 360 fl oz (UK) |
| 10 qt (UK) | 400 fl oz (UK) |
| 12 qt (UK) | 480 fl oz (UK) |
| 15 qt (UK) | 600 fl oz (UK) |
| 20 qt (UK) | 800 fl oz (UK) |
| 25 qt (UK) | 1,000 fl oz (UK) |
| 50 qt (UK) | 2,000 fl oz (UK) |
| 100 qt (UK) | 4,000 fl oz (UK) |
| 200 qt (UK) | 8,000 fl oz (UK) |
| 300 qt (UK) | 12,000 fl oz (UK) |
| 500 qt (UK) | 20,000 fl oz (UK) |
| 1000 qt (UK) | 40,000 fl oz (UK) |
| 2000 qt (UK) | 80,000 fl oz (UK) |
| 5000 qt (UK) | 200,000 fl oz (UK) |
| 10000 qt (UK) | 400,000 fl oz (UK) |
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.
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.
How many imperial fluid ounces are in an imperial quart?
One imperial quart is 40 imperial fluid ounces, exactly. Going the other way, one imperial fluid ounce is 0.025 imperial quarts. 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 quart.
Cite this page
- APA
- Rule Calculator. (2026). Convert Imperial quarts to imperial fluid ounces. Rule Calculator. https://rulecalculators.com/convert/imperial-quart-to-imperial-fluid-ounce
- MLA
- "Convert Imperial quarts to imperial fluid ounces." Rule Calculator, August 16, 2026, https://rulecalculators.com/convert/imperial-quart-to-imperial-fluid-ounce.
- Chicago
- Rule Calculator. "Convert Imperial quarts to imperial fluid ounces." Rule Calculator. Last reviewed August 16, 2026. https://rulecalculators.com/convert/imperial-quart-to-imperial-fluid-ounce.
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Questions people actually ask
- How many imperial fluid ounces are in an imperial quart?
- 40. 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.
- How do I convert imperial fluid ounces back to imperial quarts?
- Divide by 40, or multiply by 0.025 — they are the same operation.
Other volume conversions
Imperial fluid ounces to imperial quarts — the same conversion the other way.