How to Read ABV, IBU, and SRM: Beer Labels Decoded

Those mysterious numbers on craft beer labels aren't just for beer geeks—they can help you choose beers you'll love.

ABV (Alcohol By Volume)

What it measures: The percentage of alcohol in the beer.

Ranges:

• Session (< 5%): Easy drinking, good for extended sessions
• Standard (5-7%): Most common range
• Strong (7-10%): Sip and savor
• Imperial (10%+): Proceed with caution

Pro tip: Higher ABV often means more body and sweetness, as unfermented sugars contribute to both.

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IBU (International Bitterness Units)

What it measures: The level of bitterness from hops.

Ranges:

• Low (0-20): Light lagers, wheat beers
• Moderate (20-40): Pale ales, amber ales
• High (40-60): IPAs, some stouts
• Very High (60+): Double IPAs, hop bombs

Important: IBU doesn't tell the whole story. A 60 IBU beer with lots of malt can taste less bitter than a 40 IBU beer with less malt.

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SRM (Standard Reference Method)

What it measures: The color of the beer.

Scale:

• 1-4: Pale straw to gold (Pilsners, light lagers)
• 5-10: Gold to amber (Pale ales, IPAs)
• 10-20: Amber to brown (Ambers, brown ales)
• 20-30: Brown to dark brown (Porters)
• 30+: Black (Stouts)

Note: Color doesn't indicate flavor! A black lager can be lighter in flavor than a golden Belgian tripel.

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Putting It All Together

When you see a beer with:

• 5.5% ABV, 45 IBU, 8 SRM → Expect a gold-colored, moderately bitter pale ale
• 8% ABV, 80 IBU, 6 SRM → Expect a strong, very bitter double IPA
• 4.2% ABV, 35 IBU, 40 SRM → Expect a dry, roasty Irish stout