Imperial fluid ounce to Centiliter
imp fl oz
cl
Conversion History
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Quick Reference Table (Imperial fluid ounce to Centiliter)
| Imperial fluid ounce (imp fl oz) | Centiliter (cl) |
|---|---|
| 0.5 | 1.42065312499411 |
| 1 | 2.84130624998822 |
| 2 | 5.68261249997644 |
| 5 | 14.2065312499411 |
| 10 | 28.4130624998822 |
| 20 | 56.8261249997644 |
About Imperial fluid ounce (imp fl oz)
The imperial fluid ounce (imp fl oz) is a unit of volume equal to one twentieth of an imperial pint, approximately 28.413 milliliters. It is used in the United Kingdom and Commonwealth countries, though metric units have replaced it in most commercial contexts. The imperial fluid ounce is slightly smaller than the US fluid ounce (29.574 mL). UK spirits measures are now defined by law in 25 mL and 35 mL metric measures, which do not align exactly with the imperial fluid ounce.
A single spirits measure in a UK bar is 25 mL or 35 mL — close to, but not exactly, one imperial fluid ounce (28.41 mL).
About Centiliter (cl)
A centiliter (cL) is one hundredth of a liter (0.01 L), equal to 10 milliliters. It is used primarily in European contexts for beverage servings: wine is often served in 12.5 cL, 25 cL, or 37.5 cL portions; spirits are served in 2–5 cL measures; spirits bottles are typically 70 cL or 100 cL. The centiliter is common on restaurant menus, nutrition labels, and bar measuring equipment across France, Germany, Spain, and Scandinavia.
A standard restaurant wine glass portion in France is 12.5 cL. A shot of spirits is typically 2–4 cL.
Imperial fluid ounce – Frequently Asked Questions
Why did the UK abandon the fluid ounce for spirits but keep the pint for beer?
When the UK metricated in the 1990s, spirits measures were switched to 25 mL and 35 mL because publicans needed precise, legally enforceable pour sizes — and optic dispensers were easy to replace with metric ones. Beer, however, had enormous cultural resistance: the "pint" is deeply embedded in British pub identity, and the Campaign for Real Ale lobbied hard. Parliament granted an explicit exemption allowing draft beer and cider to be sold by the imperial pint. Milk got a similar exemption. The result is a hybrid system where your gin is metric but your beer is imperial.
How many imperial fluid ounces are in a UK pint?
There are exactly 20 imperial fluid ounces in one UK pint (568 mL). In the US system, 1 pint = 16 US fluid ounces (473 mL).
Is the imperial fluid ounce still used?
The imperial fluid ounce is rarely used for commercial transactions in the UK today, which metricated in the 1990s. UK spirits servings are now legally defined in metric (25 mL or 35 mL).
Why is a UK shot 25 mL not one fluid ounce?
When the UK metricated bar measures, the 25 mL "metric measure" replaced older imperial measures. One imperial fl oz (28.41 mL) was not adopted because the EU standardized on 25 mL. So UK shots are not exactly one fl oz.
How many milliliters are in an imperial fluid ounce?
One imperial fluid ounce equals approximately 28.413 mL. One US fluid ounce equals approximately 29.574 mL. Both round to roughly "30 mL" in casual usage, but the precise difference matters in pharmacology.
Centiliter – Frequently Asked Questions
How many milliliters are in a centiliter?
One centiliter (cL) equals 10 milliliters (mL). A standard shot glass (4 cL) therefore holds 40 mL.
Why do European wine labels use centiliters?
Centiliters fall neatly in the 5–75 cL range for wine servings, avoiding decimal points. A standard wine bottle is 75 cL, a half-bottle is 37.5 cL, and a restaurant serving is commonly 12.5 cL.
How many centiliters are in a standard spirits bottle?
A standard spirits bottle is 70 cL (700 mL) in the UK and EU. In the US, the standard is 75 cL (750 mL, a "fifth"). Miniature bottles are typically 5 cL (50 mL).
Is the centiliter used in the United States?
The centiliter is rarely used in the United States, which relies on fluid ounces and milliliters instead. Imported European spirits may display cL on labeling.
How does the centiliter relate to the fluid ounce?
One US fluid ounce equals approximately 2.957 cL. One centiliter equals about 0.338 US fluid ounces. A standard US 1.5 oz shot equals roughly 4.44 cL.