How many pints are in a keg? UK keg sizes explained

A 50-litre keg holds approximately 88 UK pints. A 30-litre keg holds around 53 pints, while a 20-litre keg holds around 35 pints. The number depends on the keg’s capacity, and the amount you actually serve will depend on pouring conditions and wastage.

Whether you’re buying beer for a home bar, planning a party or stocking a pub, knowing your keg sizes makes choosing the right amount much easier.

Here’s how the main keg sizes compare, how to calculate the number of pints yourself and what to check before ordering.

UK keg sizes at a glance

All figures below use the UK imperial pint, which is approximately 568ml.

These are volume conversions before any wastage. Rounded figures such as “53 pints” describe approximate capacity, rather than a guaranteed number of full servings.

Check the litres on the product listing: the word “keg” describes the container, rather than one fixed quantity of beer.

How many pints are in a 50-litre keg?

A 50-litre keg contains approximately 88 UK pints, or 176 half-pints, before wastage.

This is a useful size when you expect strong demand for one beer, whether that’s lager at a wedding, stout at an event or a regular favourite behind the bar.

If you’re comparing prices, divide the keg price by 88 to estimate the beer cost per pint. Remember to include delivery, equipment and any other costs when working out your total budget.

How many pints are in a 30-litre keg?

A 30-litre keg contains approximately 52.8 UK pints, usually rounded to 53 pints on product listings.

It offers a smaller quantity than a 50-litre keg and can be a useful option when you want to serve more than one beer without buying a large keg of each.

For example, two 30-litre kegs contain approximately 106 UK pints between them, before wastage.

How many pints are in a 20-litre keg?

A 20-litre keg contains approximately 35 UK pints, or 70 half-pints.

A smaller keg may suit a gathering with fewer beer drinkers or a home bar where you want to manage the amount of beer you have open.

However, smaller capacity does not automatically mean it will work with your dispenser. Check the keg fitting and dispensing requirements before buying.

How do you convert litres into UK pints?

Use this simple calculation:

Litres × 1.75975 = UK pints

For a 30-litre keg:

30 × 1.75975 = 52.8 UK pints

For quick estimates, multiplying the litres by 1.76 is close enough.

This calculation works for beer, cider and other kegged drinks. The volume determines the pint count.

Why do some websites show a different number of pints?

Some keg guides use US pints, which are smaller than UK pints. The same volume of beer therefore produces a higher number of US pints.

You may also see American keg names, such as “half barrel” or “quarter barrel”. These refer to particular capacities and should not be treated as direct equivalents of a 50-litre or 30-litre keg.

When comparing products, check:

• The capacity in litres.
• Whether the serving count uses UK or US pints.
• Whether the figure describes total capacity or an estimated serving yield.

Will you get every pint out of a keg?

The figures in a keg-size chart describe the volume inside the container. Your actual serving yield can be lower.

Beer can be lost through excessive foaming, spills, setting up the system and liquid remaining in the lines when service finishes.

To help reduce waste, follow the beer and equipment supplier’s instructions for cooling, pressure, gas and pouring. Correct temperature, gas and clean lines are also central to Guinness’s own draught quality guidance.

For event planning, leave some room for these losses instead of assuming every theoretical pint will reach a glass.

What size keg do you need for a party?

Start with the total number of servings you expect to provide. Consider how many adult guests will choose beer, what other drinks are available and whether you’ll serve pints or half-pints.

As a capacity example, if you expect to serve 60 pints of beer across the whole event:

• One 30-litre keg contains approximately 53 pints, so it would be too small.
• One 50-litre keg contains approximately 88 pints, leaving capacity for additional servings and some wastage.

This is a stock-planning example, rather than a suggested amount for each guest to drink.

If you’re offering several beers, calculate the likely demand for each separately. A popular lager may need a larger keg than a specialist beer available alongside it.

Do all kegs use the same equipment?

No. Keg size and equipment compatibility are separate things.

Before ordering, check the required coupler, cooling system, tap and gas or pressure source. A keg that contains the right amount of beer still needs a compatible system to serve it correctly.

Compact kegs designed for particular home dispensers also need to match that machine. Their capacity alone does not confirm compatibility.

If you’re unsure, ask Love Beer to check your chosen keg against your equipment before placing your order.

Frequently asked questions

Is a 50-litre keg 88 pints?

Yes. A 50-litre keg contains approximately 88 UK pints before wastage.

Is a 30-litre keg 52 or 53 pints?

It contains approximately 52.8 UK pints. This is usually rounded to 53 pints, although it does not guarantee 53 full servings.

How many pints are in a 45-litre keg?

A 45-litre keg contains approximately 79 UK pints before wastage.

How many pints are in a 5-litre mini keg?

A 5-litre mini keg contains approximately 8.8 UK pints. Check the product’s instructions to see how it should be dispensed.

Does the brand change how many pints are in a keg?

For the same stated volume, the pint calculation is the same. A 50-litre keg holds approximately 88 UK pints regardless of the brand. Dispensing requirements and actual serving yield can differ.

Find the right keg with Love Beer

Buying for a home bar, party or venue? Start with the beer you want, check the keg’s capacity and make sure your dispensing equipment is compatible.

Browse the Love Beer keg range or speak to our team for help choosing the right keg and setup.