How to Read a Beer Label: ABV, IBU, and More Explained

Walking into a craft beer shop or browsing an online selection can feel overwhelming when every bottle is covered in numbers and acronyms. ABV, IBU, SRM, OG—what do they all mean? Understanding these terms is the key to finding beers that match your taste preferences, whether you're craving something light and crisp or dark and roasty.

In this guide, we'll break down the most common beer label terms so you can shop with confidence. Once you know how to read a beer label, you'll never pick a random six-pack again.

ABV: Alcohol by Volume

ABV stands for Alcohol by Volume and tells you the percentage of alcohol in your beer. It's one of the most straightforward and important numbers on any label. A standard lager might sit around 4–5% ABV, while a double IPA can push 8–10% or higher. Knowing the ABV helps you gauge both the strength and the body of the beer: higher ABV usually means more malt sweetness and a fuller mouthfeel.

If you're looking for a sessionable beer to enjoy over an evening, aim for ABVs under 5%. For a bold, sippable experience, try something above 7%. For example, Double Hazy Jane clocks in at a juicy 8.4% ABV, delivering intense hop flavor without excessive bitterness. On the other end, a beer like NanoDog #0019 - Foreign Export Stout offers a robust 9.5% ABV, perfect for slow sipping by the fire.

• Low ABV (under 5%): light, easy drinking, sessionable
• Medium ABV (5–7%): balanced, good for pairing with food
• High ABV (over 7%): bold, complex, best enjoyed in smaller quantities

IBU: International Bitterness Units

IBU measures the bitterness of a beer, derived from the alpha acids in hops. The scale typically runs from 0 (no bitterness) to over 100 (intensely bitter). While IBU is a useful guide, it's not the whole story—malt sweetness can balance out perceived bitterness, so a 70 IBU stout might taste less bitter than a 40 IBU pale ale if the stout has more malt character.

For hop lovers, high IBU beers like West Coast IPAs are a playground. But if you're sensitive to bitterness, look for styles with lower IBU ratings such as wheat beers, stouts, or fruit-forward sours. A beer like Banana Blazer, for instance, is a light and fruity wheat beer with a low IBU, making it an approachable choice for newcomers. Meanwhile, a hop bomb like Double Hazy Jane uses modern hop varieties to deliver huge flavor with a surprisingly smooth bitterness.

• Low IBU (0–20): barely any bitterness, sweet or fruity
• Medium IBU (20–50): balanced, most popular range
• High IBU (50+): bold bitterness, for experienced palates

SRM: Standard Reference Method (Color)

SRM is a scale that measures the color of beer, from pale straw (2 SRM) to jet black (40+ SRM). While color doesn't dictate flavor directly, it can hint at the ingredients and roast level. Pale lagers and wheat beers are light in color, while porters and stouts are dark due to roasted malts. An amber ale sits in the middle, around 10–15 SRM.

Use SRM as a visual shortcut. If you see a deep brown or black beer, expect roasted, chocolate, or coffee notes. A golden beer often means crisp, bready, or lightly sweet. For example, Hot Smoke is a dark smoked lager with a rich mahogany color, signaling its bold, campfire-like character. In contrast, a pale ale like those in the Brewdog Mixed Pack ranges from golden to copper, offering a wide spectrum of flavors in one box.

• Light (2–8 SRM): pilsners, wheat beers, blonde ales
• Medium (8–20 SRM): pale ales, amber ales, IPAs
• Dark (20–40+ SRM): stouts, porters, dark lagers

OG and FG: Original and Final Gravity

Original Gravity (OG) and Final Gravity (FG) are numbers that homebrewers and beer geeks use to calculate alcohol content and residual sweetness. OG measures the density of the wort before fermentation, indicating how much sugar is available. FG measures density after fermentation; the difference between the two gives you the ABV. A higher OG usually means a richer, maltier beer.

While you won't see OG/FG on every commercial label, they're common on limited releases and small-batch beers. For instance, NanoDog #0019 - Foreign Export Stout likely has a high OG to achieve its full-bodied, boozy profile. Understanding these numbers helps you appreciate the craftsmanship behind each brew.

• High OG (1.060+): big, malty, high alcohol potential
• Low OG (1.030–1.050): lighter body, lower alcohol
• FG near 1.010: dry finish; FG above 1.020: sweet finish

Other Label Terms You Should Know

Beyond ABV, IBU, and SRM, beer labels often include style names, hop varieties, malt bills, and tasting notes. Words like 'unfiltered,' 'bottle-conditioned,' or 'dry-hopped' tell you about the production process. Unfiltered beers retain yeast and protein for a hazy appearance and fuller flavor. Bottle-conditioned beers continue to age in the bottle, developing complexity over time.

Some labels also indicate food pairing suggestions or serving temperature. Don't ignore these—they're curated by brewers who know their product best. And if you're shopping for gifts, a curated pack like the Lost Dad Gift Pack takes the guesswork out of selection, offering a variety of styles with clear labels so anyone can learn to read them.

• Unfiltered: hazy appearance, more texture
• Bottle-conditioned: live yeast, can be aged
• Dry-hopped: intense hop aroma without added bitterness

Next time you pick up a beer, take a moment to scan the label. The numbers and terms are your roadmap to flavor, strength, and style. Whether you're after a low-IBU refresher like Banana Blazer or a bold stout for a cold evening, reading the label ensures you get exactly what you want. Explore our full range and find your next favorite brew today.