ABV and IBU Explained (Without the Jargon)
Updated June 11, 20264 min read
Two little numbers turn up on almost every craft beer: ABV and IBU. One tells you how strong it is; the other hints at how bitter — and only one of them is reliable.
Pick up a can in the cooler and you'll see them: a percentage like 6.2% and a number like 55 IBU. They look technical, but the idea is simple. ABV is about strength. IBU is about bitterness. Learn what each one really tells you and you can read a shelf in seconds and choose with confidence.
ABV: how strong the beer is
ABV means alcohol by volume — the share of the liquid that is pure alcohol. It's the most honest number on the can, because it's measured, regulated and hard to fudge. A 5% beer is exactly that: five percent of the volume is alcohol. Roughly where the common styles land:
- Around 3–4%: session beers and many lagers and wheat beers — light, easy, made for a second round.
- Around 5–6%: the broad middle — most pale ales, classic lagers, everyday drinking.
- Around 6–7.5%: standard IPAs and many stouts — more body, more warmth.
- 8% and up: double IPAs, imperial stouts, strong Belgians — closer to wine in strength, made for sipping.
The practical takeaway: a 9% imperial stout is nearly twice the alcohol of a 5% lager. Same can size, very different evening. ABV is the number to watch if you're driving, pacing yourself, or planning to have more than one.
IBU: a rough guide to bitterness
IBU stands for International Bitterness Units. It measures the bittering compounds hops leave in the beer — on paper. The trouble is that bitterness is something you taste, and taste doesn't follow the lab number cleanly.
Here's why IBU misleads. Bitterness is always in balance with sweetness. A big, malty beer at 60 IBU can taste smooth and round, while a bone-dry one at 30 IBU can taste sharply bitter. The classic example is the hazy IPA: soft malt and juicy fruit can hide a high IBU completely, so a 50 IBU hazy may drink sweeter than a 50 IBU West Coast. Use IBU as a loose hint, never as a verdict.
ABV is a fact. IBU is an opinion the lab wrote down.
How to actually use the two numbers
- Read ABV first. It decides how the beer fits your evening more than any flavour note does.
- Treat IBU as direction, not destination — high usually means more bitter, but balance and style matter more than the digit.
- Cross-check with the style name. 'Session' signals lower ABV; 'double' or 'imperial' signals higher; 'hazy' signals soft bitterness whatever the IBU says.
- When in doubt, start lower on both and work up. It's easy to climb, harder to climb back down.
If you want the full picture of what's printed on a can, see our guide on how to read a beer label, and keep the craft beer glossary handy for any term that trips you up. For more on how hops drive both numbers, the IPA guide goes deeper.
Pacing yourself (the grown-up part)
Our whole thing is drink less, drink better. The two numbers help with both. Lower ABV means you can enjoy a couple over an evening; higher ABV means one good pour is the plan. A strong beer isn't better because it's strong — it's better because it's worth slowing down for. Drink water alongside, eat something, and never drink and drive. This is strictly for ages 18 and over.
- Does a high IBU mean a beer will taste bitter?
- Not reliably. IBU measures bittering compounds, but malt sweetness, body and fruit can mask them. A hazy IPA at 50 IBU often tastes softer than a dry lager at half that. Treat IBU as a hint, not a promise.
- Which number tells me how 'strong' a beer is?
- ABV — alcohol by volume. IBU has nothing to do with strength; it's only about bitterness. A 4% beer can be very bitter, and an 8% beer can taste sweet. Watch ABV when you're pacing yourself.
Ready to put it into practice? Browse the cold beer cooler and pick by the numbers — we deliver it cold across Đà Nẵng, same day.
Drink less, drink better.