What Is a Half Quart Jar
A half quart jar holds exactly 0.5 US liquid quarts, which is 16 US fluid ounces or about 473 milliliters. The standard US quart is defined as 57.75 cubic inches, and a half quart jar is simply one half of that volume. This size is widely used in food storage, canning, and laboratory sample containers because it balances capacity with handling ease. For precise definitions of the US liquid quart, see the National Institute of Standards and Technology (NIST) official measurement resources.
Manufacturers produce half quart jars in glass, BPA-free plastic, and polycarbonate materials. Glass versions are common for home canning, while plastic versions are popular in commercial kitchens and labs. The internal dimensions of a standard half quart jar are roughly 3.5 inches in diameter and 4.5 inches in height, though variations exist by brand. Ball, Kerr, and Bernardin are three major brands that offer half quart jars in their canning product lines.
Common Uses and Applications
Home canners use half quart jars for preserving fruits, jams, pickles, and fermented vegetables. The USDA Complete Guide to Home Canning lists half pint and half quart jars as standard sizes for acidic foods processed in a boiling water bath. These jars are also used for dry goods storage, spice organization, and craft projects such as candle making and spice blends.
In commercial settings, half quart jars serve as sample containers in laboratories and pharmacies. Companies use them for small-batch sauces, dressings, and condiments sold in retail. The food packaging industry tracks half quart jar demand as part of the broader glass container market, which is influenced by consumer trends toward reusable and recyclable packaging.
Market Data and Leading Brands
The global glass container market was valued at over 30 billion dollars in recent years, with food and beverage storage representing a significant segment. Ball Corporation, a major manufacturer of glass canning jars, has been producing jars for over a century and remains a leading brand in the half quart category. Bernardin, a Canadian company, dominates the North American home canning market and offers half quart jars with both two-piece and one-piece lid systems.
Online retail data shows that half quart jars are among the top-selling canning sizes on major platforms. Pricing varies by material and brand, with bulk packs of 12 half quart glass jars typically ranging from 15 to 30 dollars. For market analysis on packaging trends, see the Freedonia Group industry research reports.