0.0% vs 0.5% Beer: What's the Difference?

Published April 2026 · 7-minute read · by Rich, founder of Unhopped

Short answer

0.0% beer contains no detectable alcohol — the ABV rounds to zero. 0.5% beer contains a tiny amount of residual alcohol (about 1.65g per 330ml can), which helps preserve flavour and body. Both are widely treated as alcohol-free by consumers, but they're produced differently and taste different.

The 0.0%-vs-0.5% choice comes up at every alcohol-free beer shelf in the UK. The numbers look similar, the labels often look identical, and most drinkers couldn't articulate the actual difference. But they're genuinely different products, made by slightly different processes, designed for slightly different drinkers.

The basic distinction

Both 0.0% and 0.5% beer fall under the umbrella of 'alcohol-free' in the everyday sense. But there's a meaningful difference in the actual alcohol content:

	0.0% beer	0.5% beer
Actual ABV	Below detection threshold — effectively zero	Up to 0.5% (around 1.65g of alcohol per 330ml)
UK legal label	'Alcohol-free' (under 0.05%)	Technically 'de-alcoholised', often marketed as 'alcohol-free'
Typical examples	Heineken 0.0, Guinness 0.0, Peroni 0.0%, Days Lager	Lucky Saint, Athletic Brewing, Northern Monk, Big Drop
Common style fit	Mainstream lagers, stouts, mass-market brands	Craft IPAs, pale ales, sour beers, indie producers
Brewing approach	Heavy dealcoholisation or arrested fermentation	Lighter dealcoholisation; small residual ABV preserved deliberately
Flavour intensity	Often slightly thinner, cleaner profiles	Often more complex, with more body and aroma

Why does the small ABV difference matter?

Two main reasons: brewing process, and consumer choice.

The brewing reason

Alcohol does important work in beer beyond getting people drunk. It dissolves and carries volatile flavour compounds. It contributes perceived body and mouthfeel. It interacts with hop oils, malt Maillard reactions, and yeast esters. Take all the alcohol out and you're removing one of beer's structural ingredients.

0.5% beers leave a tiny amount of alcohol in — and that small amount has an outsized effect on flavour. Hop aroma sticks around longer. Body feels fuller. The beer tastes more like a beer. This is why most modern craft alcohol-free beers target 0.5% rather than 0.0% — not for any moral reason, but because it's easier to brew a flavour-rich beer at 0.5%. For more on the brewing methods themselves, see how alcohol-free beer is made.

The consumer reason

Some drinkers want absolute zero alcohol — either because of personal choice, religious observance, or simply because '0.0%' is easier to communicate to others. Others are happy with 0.5% as long as the beer tastes good. The market accommodates both, and the two product types coexist on the same shelves.

Does 0.5% beer get you drunk?

For practical purposes, no. A 330ml beer at 0.5% ABV contains around 1.65g of alcohol — about a tenth of a small glass of wine. Even drinking many of them, the alcohol load is tiny compared to even one full-strength beer (which contains around 12-18g per 330ml depending on style and ABV).

Many ordinary foods contain comparable trace alcohol — ripe bananas (around 0.4%), kombucha (often 0.5-1.5%), and fresh bread (0.04-1.9%) all sit in similar territory. For more on this comparison, see is alcohol-free beer actually alcohol-free?.

Does 0.0% always taste worse than 0.5%?

Five years ago, the answer was usually yes. Today, no — the best 0.0% beers have caught up dramatically. Guinness 0.0 is widely considered one of the best alcohol-free beers in any category, and it's 0.0%. Days's lagers compete head-to-head with leading 0.5% craft NA. Heineken 0.0 is properly drinkable for what it is.

What's true is that 0.5% gives brewers more flavour latitude — particularly for hop-forward, complex, or unusual styles. Most of the world's most ambitious alcohol-free craft beers sit at 0.5% for that reason. But 0.0% no longer means watered-down or apologetic. For more on what separates good from average AF beer, see why some alcohol-free beers taste better.

Which should you choose?

Pick 0.0% if…

You want absolute certainty about alcohol content for any reason, including personal preference
You're looking for mainstream lager-style options — this is where 0.0% currently dominates
You're drinking with someone where the '0.0' on the label communicates clearly
You like Guinness, Heineken, Peroni, or other major brands and want a familiar AF version

Pick 0.5% if…

You want the widest range of styles — IPAs, pale ales, stouts, sours, fruited beers
You care about craft beer character, hop expression, and brewery diversity
You're happy with a tiny residual ABV (less than what's in many ordinary foods)
You want to support independent UK and craft AF brewers — most operate in the 0.5% space

Many drinkers settle on a hybrid approach: a 0.0% lager as the everyday default, with 0.5% craft beers for occasions when they want something more characterful. Both work. The shelf has room for both.

Are there drawbacks to 0.5%?

Two minor things to be aware of:

The label says 'alcohol-free' but contains some alcohol. If you're communicating with someone who wants strict zero (e.g. for personal reasons), 0.5% beers may not satisfy that requirement. Default to 0.0% in those contexts.
Cumulative alcohol load matters at scale. Drinking ten 0.5% beers gives you about 16g of alcohol — roughly equivalent to a small glass of wine. For most drinkers this is irrelevant, but worth knowing.

For the legal and labelling distinction more broadly, see Alcohol-Free vs Low Alcohol Beer.

Frequently Asked Questions

What's the actual difference between 0.0% and 0.5% beer?

0.0% beer contains no detectable alcohol; 0.5% beer contains around 1.65g of alcohol per 330ml can — a tiny but measurable amount. The 0.5% sits at roughly the same alcohol concentration as a ripe banana or many kombucha drinks. The brewing process is also slightly different: 0.5% beers usually retain a small amount of residual alcohol deliberately to preserve flavour.

Can you get drunk on 0.5% beer?

For practical purposes, no. A 330ml can of 0.5% beer contains about a tenth of the alcohol in a small glass of wine. To match the alcohol of a single full-strength pint, you'd need to drink around 8-10 cans of 0.5% beer in a short period.

Why do most craft alcohol-free beers say 0.5% instead of 0.0%?

Brewers can preserve flavour and body more easily at 0.5%. A tiny amount of residual alcohol carries volatile aromatics and contributes mouthfeel. Most modern craft alcohol-free brewers (Lucky Saint, Northern Monk, Big Drop, Athletic Brewing) target 0.5% deliberately for flavour reasons, not for any regulatory or commercial constraint.

Is 0.0% beer worse than 0.5%?

Not anymore. Five years ago, 0.0% beers tended to taste thinner and less satisfying than 0.5% beers. Today, products like Guinness 0.0, Heineken 0.0, and Days Lager have closed that gap. 0.5% still gives brewers more flavour latitude for complex craft styles, but 0.0% no longer means low-quality.

Which is better — 0.0% or 0.5%?

Neither is objectively better — they suit different needs. 0.0% gives absolute zero certainty and tends to dominate mainstream lager-style options. 0.5% gives the widest range of craft styles and slightly fuller flavour. Many drinkers use both: 0.0% as a default, 0.5% for occasions when they want something more characterful.

Does 0.5% beer affect a breathalyser?

Not in any practical way. The alcohol load from 0.5% beer is so small that it's metabolised faster than it accumulates. For comparison, ordinary foods like ripe bananas, fresh bread, and kombucha contain similar levels of natural alcohol. We don't cover specific drink-driving guidance on Unhopped — consult official UK government guidance for those questions.

Sources & Further Reading

GOV.UK — Food labelling, including alcohol content thresholds.
Brewers Association — technical resources on dealcoholisation methods and target ABVs.
Goldberg, et al., The natural occurrence of ethanol in food — peer-reviewed evidence on trace alcohol in everyday foods.
Lucky Saint, Northern Monk, Big Drop, Athletic Brewing — brewer technical pages explaining their dealcoholisation approaches.
Heineken 0.0 and Guinness 0.0 product technical sheets — mainstream 0.0% production approaches.

About the author: Rich is the founder of Unhopped, a UK-built discovery platform for alcohol-free beer. He writes about the alcohol-free beer category, brewing process, and the slow generational shift in how Britain drinks. This article was researched against GOV.UK food labelling guidance, NHS resources, and the technical brewing literature on dealcoholisation.