Forty (40oz) Beer Converter Calculator

What Is a Forty?

A forty is a common term for a 40-fluid-ounce (1.18 L) bottle of malt liquor or beer in the United States. The name comes directly from its volume, which is roughly equivalent to 1.18 liters or approximately 3.3 standard drinks.

Common Forty Beer Conversions

• 1 Forty = 40 fluid ounces
• 1 Forty = 1,183 milliliters
• 1 Forty = 1.18 liters
• 1 Forty ≈ 3.3 standard drinks (based on 5% ABV)