Imperial gallon to Hectoliter

imp gal

1 imp gal

hl

0.0454608999998115 hl

Conversion History

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1 imp gal (Imperial gallon) → 0.0454608999998115 hl (Hectoliter)

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Quick Reference Table (Imperial gallon to Hectoliter)

Imperial gallon (imp gal)Hectoliter (hl)
0.50.02273044999990575
10.0454608999998115
20.090921799999623
50.2273044999990575
100.454608999998115
502.273044999990575

About Imperial gallon (imp gal)

The imperial gallon is a unit of volume defined as exactly 4.54609 liters, used in the United Kingdom, Canada, and some Commonwealth nations. It is approximately 20% larger than the US liquid gallon. Fuel economy in the UK is expressed in miles per imperial gallon. The imperial gallon divides into 8 imperial pints, each of 568 mL. The UK officially metricated fuel sales to liters in the 1980s–1990s, but miles per imperial gallon remains the legal unit for new car fuel economy labels.

UK car fuel economy figures are expressed in miles per imperial gallon. One imperial gallon equals 8 standard UK pints of beer.

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 gallon – Frequently Asked Questions

One imperial gallon is defined as exactly 4.54609 liters — approximately 20% more than the US liquid gallon (3.785 L).

The UK switched fuel sales to liters in the 1990s. However, miles per gallon (imperial) remains the legal unit for car fuel economy on new vehicle labels. Road speed is in mph and distances are in miles, so imperial gallons remain embedded in UK motoring.

UK MPG uses the imperial gallon (4.546 L); US MPG uses the US gallon (3.785 L). Multiply UK MPG by 0.832 to get US MPG. A car rated 40 UK MPG ≈ 33 US MPG.

There are exactly 8 imperial pints in one imperial gallon. Each imperial pint is 568 mL, compared to 473 mL for a US pint.

Canada officially metricated in the 1970s and fuel is sold in liters. However, some older Canadians and certain agricultural contexts still reference imperial gallons informally. Canadian and UK imperial gallons are identical (4.54609 L).

Hectoliter – Frequently Asked Questions

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.

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.

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.

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.

One cubic meter equals exactly 10 hectoliters (1 m³ = 1,000 L = 10 hL).

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