How Many Pints are in a Keg? UK Keg Sizes Explained (5L, 30L, 50L Guide)

Quick Answer: How Many Pints are in a Keg?

If you’re wondering how many pints are in a keg, the answer depends on the keg size. Smaller home kegs hold around 8-14 pints, while pub-sized kegs can pour more than 80 pints.

Here’s a quick breakdown of the most common keg sizes in the UK:

A 5L keg is great for smaller get-togethers or keeping fresh beer on tap at home. Larger 30L and 50L kegs are the sort you’ll usually spot in pubs, bars, and bigger parties where nobody wants the beer running dry halfway through the night.

If you enjoy brewing fresh beer at home, smaller keg systems like Pinter (10 UK pints) make it easy to pour pub-style pints without needing a commercial setup.

Understanding Why Pint Numbers Change

Not all pints are the same size. That’s why the number of pints in a keg changes depending on whether you’re using UK or US measurements.

In the UK, a pint is 568ml. That means each pour is slightly bigger, so you’ll get fewer pints from the same keg compared to the US.

For example, a 30L keg gives you around 52-53 UK pints. The exact number can vary slightly depending on foam, serving temperature, and how generously the pints are poured after a couple of rounds.

Keg Sizes Explained (With Pint Breakdown)

5 Litre Keg (Mini Keg/Home Use)

A 5 litre keg holds around 8-9 UK pints. It’s one of the most popular sizes for home use because it’s compact, easy to chill, and doesn’t take over the entire fridge.

It’s ideal for:

This is also where home brewing systems like Pinter fit nicely. Pinter is designed to make around 10 fresh UK pints at home, giving you that draught beer experience without needing bulky pub equipment.

6 Litre Keg

A 6 litre keg gives you roughly 10-10.5 UK pints.

You’ll often see this size used in:

It offers a nice middle ground if you want enough beer for a few people without committing to a larger keg.

8 Litre Keg

An 8 litre keg holds around 14 UK pints.

This size works well for:

It’s large enough to share comfortably but still manageable for home setups.

20 Litre Keg

A 20 litre keg contains roughly 35 UK pints.

You’ll usually find these used for:

It gives you enough beer for a decent crowd while staying easier to handle than full pub kegs.

30 Litre Keg

A 30 litre keg pours around 52-53 UK pints.

This size is common in:

For many independent bars and taprooms, it strikes a good balance between volume and storage space.

50 Litre Keg (Standard UK Keg)

A 50 litre keg holds around 88 UK pints.

This is the standard keg size used in:

If you’ve ever ordered a pint in a packed pub on a Friday night, there’s a good chance it came from a 50L keg working overtime behind the bar.

Traditional Cask Sizes

Traditional cask ale follows slightly different sizing.

A firkin holds around 9 gallons, which works out to roughly 72 UK pints.

These are mainly used for:

You’ll usually spot them in proper ale-focused pubs where hand-pulled pints are taken very seriously.

How to Choose the Right Keg Size

Choosing the right keg size mostly comes down to three things:

For smaller nights in or casual drinks with a few friends, a compact keg usually makes far more sense than dragging home a massive pub barrel.

Here’s a simple guide:

It’s also worth thinking about fridge space and handling. A full 50L keg is seriously heavy once filled, while smaller formats are much easier to chill, pour, and store at home.

That’s one reason Pinter works so well for everyday use. Smaller formats are simply easier to manage, especially if you want fresh beer at home without needing a pub cellar in the garage.

How Many Pints Do You Actually Get? (Real vs Theoretical)

The numbers listed for keg sizes are usually theoretical maximums. In real life, you’ll almost always pour slightly fewer pints than the maths suggests.

Why? Because beer has a habit of doing beer things.

A few factors affect your final pint count:

For example, a badly poured first pint can easily disappear into a glass full of foam. And if the keg is too warm, you’ll usually lose even more through excess froth.

In most setups, it’s normal to lose around 5-10% of the keg volume during actual use. With setups like Pinter, the brewing and pouring process is designed for home use, making it easier to get consistently good pints without wasting loads of beer in the process.

Fresh Beer at Home, Without the Fuss (10 UK Pints/Brew)

One of the reasons smaller keg formats have become so popular is simple: fresh beer tastes better.

That’s the whole idea behind Pinter. Instead of storing beer for months in cans or bottles, Pinter lets you brew, condition, and pour fresh beer directly from the fridge at home.

The process is brilliantly simple:

Each brew makes around 10 fresh UK pints, making it ideal for weekends, dinner parties, BBQs, or simply having proper draught-style beer ready whenever you fancy one.

Because the beer goes directly from Pinter to pint, there’s no long storage time and no sitting on shelves while flavour slowly fades. Just fresh beer enjoyed at its best.

And unlike oversized pub kegs, the compact design is easy to store, easy to chill, and built for normal homes rather than commercial bars.

If you want fresh beer at home without the usual homebrewing hassle, get a Pinter today and start pouring your own fresh pints. Here’s our full range of fresh beers!

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About the author

Will Kirkham

Head Brewer

Will leads brewing at Pinter, turning fresh ingredients into crisp, drinkable beer that anyone can make at home.