Convert Imperial quarts to US fluid ounces
1 imperial quart is 38.43 fl oz. One imperial quart is exactly 38.4303976162 US fluid ounces.
One imperial quart is 38.430398 US fluid ounces. To convert imperial quarts to US fluid ounces, multiply by 38.430398; to go the other way, divide by 38.430398 or multiply by 0.026021068. The relation is exact but the figure is not: it is a rounding of a number that does not terminate, and 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 × 38.430398
1 * 38.43039838.43 fl oz
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 US fluid ounces? The converter and the working
- 1.Take the measurement in imperial quarts.
- 2.Multiply by 38.430398 — that is how many US fluid ounces fit in one imperial quart.
- 3.To go back the other way, divide by 38.430398, or multiply by 0.026021068.
Worked example: 25 imperial quarts to US fluid ounces
- Formula
- qt (UK) × 38.430398 = fl oz
- Arithmetic
- 25 × 38.430398 = 960.76 fl oz
- Answer
- 25 qt (UK) = 960.76 fl oz
The factor is rounded for display; the figure above is computed from the full value.
Imperial quarts to US fluid ounces conversion table
| Imperial quarts | US fluid ounces |
|---|---|
| 1 qt (UK) | 38.43 fl oz |
| 2 qt (UK) | 76.86 fl oz |
| 3 qt (UK) | 115.29 fl oz |
| 4 qt (UK) | 153.72 fl oz |
| 5 qt (UK) | 192.15 fl oz |
| 6 qt (UK) | 230.58 fl oz |
| 7 qt (UK) | 269.01 fl oz |
| 8 qt (UK) | 307.44 fl oz |
| 9 qt (UK) | 345.87 fl oz |
| 10 qt (UK) | 384.3 fl oz |
| 12 qt (UK) | 461.16 fl oz |
| 15 qt (UK) | 576.46 fl oz |
| 20 qt (UK) | 768.61 fl oz |
| 25 qt (UK) | 960.76 fl oz |
| 50 qt (UK) | 1,921.52 fl oz |
| 100 qt (UK) | 3,843.04 fl oz |
| 200 qt (UK) | 7,686.08 fl oz |
| 300 qt (UK) | 11,529.12 fl oz |
| 500 qt (UK) | 19,215.2 fl oz |
| 1000 qt (UK) | 38,430.4 fl oz |
| 2000 qt (UK) | 76,860.8 fl oz |
| 5000 qt (UK) | 192,151.99 fl oz |
| 10000 qt (UK) | 384,303.98 fl oz |
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 a US fluid ounce?
Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly. The imperial fluid ounce is a different unit at exactly 28.4130625 ml, so a UK recipe calling for 10 fl oz means 284 ml and a US one means 296 ml. It is also a volume, not a weight: an ounce of flour is not a fluid ounce of flour.
How many US fluid ounces are in an imperial quart?
One imperial quart is 38.430398 US fluid ounces. Going the other way, one US fluid ounce is 0.026021068 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
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- Rule Calculator. (2026). Convert Imperial quarts to US fluid ounces. Rule Calculator. https://rulecalculators.com/convert/imperial-quart-to-fluid-ounce
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Questions people actually ask
- How many US fluid ounces are in an imperial quart?
- 38.430398. Exactly one 128th of a US gallon, which makes it 29.5735295625 ml exactly. The imperial fluid ounce is a different unit at exactly 28.4130625 ml, so a UK recipe calling for 10 fl oz means 284 ml and a US one means 296 ml. It is also a volume, not a weight: an ounce of flour is not a fluid ounce of flour.
- How do I convert US fluid ounces back to imperial quarts?
- Divide by 38.430398, or multiply by 0.026021068 — they are the same operation.
Other volume conversions
US fluid ounces to imperial quarts — the same conversion the other way.