Forties to Quarts Converter

Convert volume measurements from forties (40 oz bottles) to quarts quickly and accurately. Enter any forties value and get the equivalent in US quarts.

forties
Result
0 quarts

Common Forties to Quarts Conversions

Forties Quarts (32 oz)
1 forty1.25 quarts
2 forties2.5 quarts
4 forties5 quarts
5 forties6.25 quarts
8 forties10 quarts
10 forties12.5 quarts
16 forties20 quarts
20 forties25 quarts
40 forties50 quarts

How to Convert Forties to Quarts

Converting forties to quarts is useful for understanding beer volumes in standard US liquid measurements. A forty contains 40 fluid ounces of beer, while a US quart contains 32 fluid ounces.

The Conversion Formula

The formula to convert forties to quarts is based on their fluid ounce values:

quarts = forties x (40 / 32)

This formula works because one forty equals 40 fluid ounces, and one quart equals 32 fluid ounces. The conversion factor is exactly 1.25, meaning each forty contains 1.25 quarts.

Example 1: Converting 4 Forties to Quarts

quarts = 4 x (40 / 32)

quarts = 4 x 1.25

Result: 5 quarts

Example 2: Converting 10 Forties to Quarts

quarts = 10 x (40 / 32)

quarts = 10 x 1.25

Result: 12.5 quarts

What Is a Forty?

A forty (also written as "40" or "40 oz") is a glass or plastic bottle containing 40 fluid ounces of beer, approximately 1.18 liters. This bottle size became popular in the United States, particularly for malt liquor brands. A forty is 25% larger than a quart.

What Is a Quart?

A US quart is a unit of liquid volume equal to 32 fluid ounces, 2 pints, or 1/4 of a gallon (approximately 946 milliliters). The quart is a traditional measurement in the US customary system and is commonly used for measuring larger liquid quantities. A quart bottle or container is sometimes seen for beverages, including some specialty beers and ciders.

Why Convert Forties to Quarts?

This conversion is useful for:

Quick Reference

Key conversion facts: