Fluid Ounce (US) to Cup (UK) Converter
Volume · unit-converter
Convert Fluid Ounce (US) to Cup (UK) with a fixed input and output unit, step-by-step formula line, and reference tables. All calculations use liter-based factors (US fluid measures, imperial UK units, SI cubic meters).
Calculator
From: Fluid Ounce (US) (floz)
To: Cup (UK) (ukcup)
About Fluid Ounce (US)
The US fluid ounce is 1/128 of a US gallon (about 29.5735 ml). US nutrition labels and recipes use fluid ounces for liquids.
About Cup (UK)
The UK metric cup is often taken as 250 ml in modern recipes, though traditional imperial cups differ; this converter uses the liter-based UK cup factor from the shared table.
How to convert fluid ounces (us) to cups (uk)
1 fluid ounce (us) is equal to 0.10408427307862 cup (uk):
1 floz = (0.0295735295625 L ÷ 0.284130625 L) ukcup = 0.10408427307862 ukcup
Each fluid ounce (us) is defined as 0.0295735295625 L and each cup (uk) as 0.284130625 L, so one floz equals 0.0295735295625 ÷ 0.284130625 ukcup = 0.10408427307862 ukcup.
Let V(floz) be the numeric value of the same volume measured in Fluid Ounce (US) (floz), and V(ukcup) the value in Cup (UK) (ukcup). Then:
V(ukcup) = V(floz) × (0.0295735295625 / 0.284130625)
Equivalently, divide by how many floz fit into one ukcup (liters per ukcup divided by liters per floz):
V(ukcup) = V(floz) ÷ 9.60759940403884
Or: cup (uk) = fluid ounce (us) ÷ 9.60759940403884
Examples
Example #1: Convert 20 floz to cup (uk)
20 floz = 20 floz × (0.0295735295625/0.284130625) ukcup = 2.0816854616 ukcup
20 floz = 20 floz ÷ 9.60759940403884 = 2.0816854616 ukcup
Example #2: Convert 50 floz to cup (uk)
50 floz = 50 floz × (0.0295735295625/0.284130625) ukcup = 5.2042136539 ukcup
50 floz = 50 floz ÷ 9.60759940403884 = 5.2042136539 ukcup
Summary
To convert Fluid Ounce (US) to Cup (UK), multiply the value in floz by the ratio of liters per floz divided by liters per ukcup. Equivalently: value_ukcup = value_floz × (0.0295735295625 / 0.284130625). Numerically, 1 floz equals 0.1040842730786236 ukcup.
Relationship context
You are converting between US customary fluid / volume (Fluid Ounces (US)) and UK imperial fluid / volume (Cups (UK)). US and UK fluid measures differ (gallons, ounces, tablespoons); metric liters and cubic meters align with SI. The numeric factor used here is 1.040843e-1.
Conversion tables
| Fluid Ounce (US) (floz) | Cup (UK) (ukcup) |
|---|---|
| 0.1 | 0.0104084273 |
| 1 | 0.1040842731 |
| 2 | 0.2081685462 |
| 3 | 0.3122528192 |
| 4 | 0.4163370923 |
| 5 | 0.5204213654 |
| 6 | 0.6245056385 |
| 7 | 0.7285899115 |
| 8 | 0.8326741846 |
| 9 | 0.9367584577 |
| Fluid Ounce (US) (floz) | Cup (UK) (ukcup) |
|---|---|
| 10 | 1.0408427308 |
| 20 | 2.0816854616 |
| 30 | 3.1225281924 |
| 40 | 4.1633709231 |
| 50 | 5.2042136539 |
| 60 | 6.2450563847 |
| 70 | 7.2858991155 |
| 80 | 8.3267418463 |
| 90 | 9.3675845771 |
| 100 | 10.4084273079 |