What size growlers are common in the UK?

The most common sizes are 1 litre (often glass flip-top), 1.89 litres (US half-gallon, common imports), and 2 litres. Some craft beer shops use 946ml (32oz) or 750ml bottles. Glass flip-top growlers are the UK standard for homebrew sharing.

How long does beer last in a growler?

Unopened and refrigerated, a properly filled growler lasts 3-5 days. Once opened, drink within 24-36 hours as carbonation escapes and oxygen enters. Counter-pressure filled growlers (sealed under CO2 pressure) last 1-2 weeks unopened.

How do I fill a growler from a keg?

The simplest method is filling from the tap at low pressure (5-8 PSI). Tilt the growler and fill slowly down the side to minimise foaming. Better methods include a counter-pressure filler or a growler filling tube that reaches the bottom. Chill the growler first to reduce foaming.

Can I fill growlers for friends?

In the UK, you can share homebrew for free with friends and family for personal consumption. You cannot sell it without proper licensing. Growlers are a great way to share your homebrew at gatherings or give as gifts.

How long does a growler stay fresh?

An unopened growler filled with properly purged CO2 stays fresh for 5-7 days. Once opened, consume within 24-36 hours as CO2 escapes and oxidation begins. Counter-pressure filled growlers last longer than gravity-filled ones.

BrewCalcs

Growler Fill Calculator

Calculate growler fills from your keg and track remaining volume.

Keg Size

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Current Level in Keg

Estimated beer remaining

Growler Size

Enter the growler size

How We Calculate This

Growler Count

Growlers Fillable = Current Keg Volume / Growler Size, rounded down (you cannot fill a partial growler properly). Remaining volume is what is left in the keg after filling. Pint counts use the UK pint of 568ml.

Frequently Asked Questions

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Last updated: 2025-02-20

All calculations are estimates. Always verify values and adjust based on your equipment and ingredients.