Keg Calculator UK | Pints Per Keg, Cost Per Pint & Event Beer Planner

Whether you're planning a wedding, birthday party, beer festival or corporate event, estimating the right amount of beer can be challenging. Order too little and you risk running out. Order too much and you could be left with expensive unused stock.

Our Keg Calculator helps you estimate:

• How many pints are in a keg
• Cost per pint
• Number of kegs required
• Total beer budget
• Beer requirements for events and parties

Simply enter your keg size, number of guests and expected consumption to receive an instant estimate.

The number of pints in a keg depends on the keg size.

In the UK, a standard pint is:  568ml

The most common keg sizes contain approximately:

A standard 50-litre keg contains approximately 88 UK pints, making it the most common choice for pubs, events and large gatherings.

The amount of beer required depends on:

• Number of guests
• Event duration
• Drinking habits
• Weather conditions
• Availability of alternative drinks

As a rough guide:

Using these averages can help estimate the number of kegs required.

For an event where guests consume approximately 3 pints each:

50 guests × 3 pints = 150 pints

A standard 50L keg contains approximately 88 pints.

Therefore: 150 ÷ 88 = 1.7 kegs

You would typically require:

2 x 50L kegs

For 100 guests drinking 3 pints each: 100 guests × 3 pints = 300 pints

This equates to:

300 ÷ 88 = 3.4 kegs

You should allow:

4 x 50L kegs

This is one of the most common searches for wedding receptions and corporate events.

For larger events:

150 guests × 3 pints = 450 pints 

Which requires:

450 ÷ 88 = 5.1 kegs

Allow:

6 x 50L kegs

This provides a comfortable buffer for higher consumption.

Weddings often require more beer than many hosts expect.

Factors that increase consumption include:

• Long reception periods
• Warm weather
• Evening entertainment
• Limited alternative drink options

For weddings, many planners recommend allowing: 4–5 pints per guest

Example:

Using a keg calculator can help ensure adequate supply without excessive waste.

Beer festivals typically require more generous estimates.

Attendees often sample multiple beers throughout the session.

Suggested planning figures:

For festivals, many organisers add:

• 10–15% contingency stock
• Multiple beer styles
• Backup kegs for popular products

One of the most useful features of a keg calculator is calculating the true cost per pint.

Formula:

Cost Per Pint = Keg Cost ÷ Number of Pints

Example: £180 keg ÷ 88 pints

Result: £2.05 per pint

This can help pubs, event organisers and mobile bars understand their profit margins.

When planning an event, it's important to understand the difference between cask and keg beer.

Kegs are generally easier to manage and more suitable for larger gatherings.

Most experienced event organisers include a waste allowance.

Beer losses can occur through:

• Line cleaning
• Foam
• Spillage
• Sampling
• Over-pouring

Typical allowances:

Including a waste allowance reduces the risk of running out of beer before the event ends.

• Know Your Audience: Different events have different drinking habits.
• Consider the Weather: Warm weather generally increases beer consumption.
• Offer Variety: Providing lager, IPA and stout options can improve guest satisfaction.
• Include Non-Alcoholic Options: Not all guests will drink alcohol.
• Allow Extra Stock: A small surplus is usually preferable to running out.

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