Imperial fluid ounce to Hectoliter
imp fl oz
hl
Conversion History
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Quick Reference Table (Imperial fluid ounce to Hectoliter)
| Imperial fluid ounce (imp fl oz) | Hectoliter (hl) |
|---|---|
| 0.5 | 0.000142065312499411 |
| 1 | 0.000284130624998822 |
| 2 | 0.000568261249997644 |
| 5 | 0.00142065312499411 |
| 10 | 0.00284130624998822 |
| 20 | 0.00568261249997644 |
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 Hectoliter (hl)
A hectoliter (hL) is 100 liters, the standard unit of volume in the brewing, winemaking, and petroleum industries. Beer production is measured in hectoliters worldwide: a microbrewery might produce 500 hL per year, while a major brewery produces millions. Wine harvests and grape yields are reported in hL per hectare. Fuel depot capacities and tanker truck volumes are commonly expressed in hectoliters across Europe. One hectoliter of water has a mass of 100 kg.
A standard 50-liter beer keg = 0.5 hL. A microbrewery defines its annual output in hundreds of hL.
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.
Hectoliter – Frequently Asked Questions
What is a hectoliter?
A hectoliter (hL) equals 100 liters. It is the standard unit of volume in beer and wine production, and is widely used in petroleum and agricultural chemical industries across Europe.
Why is beer measured in hectoliters?
Breweries adopted the hectoliter as a convenient production unit — large enough to avoid unwieldy numbers at industrial scale. A craft brewery producing 1,000 hL per year makes roughly 200,000 500-mL bottles.
How many hectoliters are in a standard beer keg?
A US half-barrel keg holds 58.7 liters ≈ 0.587 hL. A European 50-liter keg = 0.5 hL. A US quarter-barrel keg = 0.293 hL.
How is wine production measured in hectoliters?
Vineyard yields are reported in hectoliters per hectare (hL/ha). A typical quality wine yield is 30–50 hL/ha. National wine production statistics are expressed in millions of hectoliters.
How many hectoliters are in a cubic meter?
One cubic meter equals exactly 10 hectoliters (1 m³ = 1,000 L = 10 hL).