A half pint is 8 fluid ounces in the US, roughly the volume of your clenched fist. It’s the small glass of milk you’d get at a school cafeteria, the short mason jar you see at farmers’ markets, or the compact liquor bottle that fits in a back pocket. Depending on context, “half pint” can refer to a drinking glass, a canning jar, a liquor bottle, or a unit of measurement, and each one looks a little different.
How Much Liquid Is in a Half Pint
In the US, a half pint equals 8 fluid ounces, or about 237 milliliters. That’s exactly one standard measuring cup. If you’ve ever filled a measuring cup to the 1-cup line, you’re looking at a half pint.
In the UK and other countries using the imperial system, a half pint is slightly larger: 10 imperial fluid ounces, or about 284 milliliters. That’s roughly 20% more liquid than a US half pint, which is why a “half” at a British pub holds noticeably more than an American 8-ounce glass.
There’s also a US dry half pint used for measuring things like berries or grains. It holds about 275 milliliters, which falls between the US liquid and imperial versions. You’ll rarely encounter this outside of a produce stand or recipe, though.
Everyday Objects for Comparison
The easiest visual reference: make a fist. A clenched adult fist is roughly 8 fluid ounces, the same volume as a US half pint. A tennis ball or baseball also approximates one cup of volume. So picture a container just big enough to hold a baseball, and you’ve got the right size in mind.
A standard school milk carton is a half pint. So is one of those small single-serve juice boxes. If you drink yogurt from a cup, many of those containers are in the 6- to 8-ounce range, putting them right around half-pint territory.
The Half-Pint Mason Jar
Mason jars are one of the most common places you’ll see “half pint” printed on a label. The regular-mouth version stands about 3¾ inches tall with an opening about 2⅜ inches wide. It’s a compact, squat jar, shorter than a soda can.
The wide-mouth version is even shorter and rounder, only about 2½ inches tall with a wider 2⅞-inch opening. Both hold 8 ounces, but the wide-mouth jar looks more like a small bowl with a lid. These are the jars people typically use for jams, small batch preserves, or overnight oats.
The Half-Pint Liquor Bottle
In the spirits industry, a “half pint” bottle actually holds 200 milliliters, not a true 8-ounce (237 ml) half pint. It’s a standardized size set by federal regulations, and it’s the flat, pocket-sized bottle you see behind the counter at liquor stores or gas stations. According to the NIAAA, a 200 ml bottle of 80-proof spirits contains about 4½ standard drinks.
These bottles are typically around 5 to 6 inches tall and narrow enough to grip easily in one hand. They’re distinctly smaller than the next size up (a 375 ml “pint,” which is itself not a true pint either). The liquor industry’s size names are traditional rather than precise.
The Half-Pint Beer Glass
In UK pubs, a half pint is a standard serving size, holding 284 ml (10 imperial fluid ounces). The glass is typically a scaled-down version of the full pint glass. Many use the “Nonic” design, which has a slight bulge near the rim to prevent chipping and make stacking easier. A half-pint glass stands roughly 4 inches tall and fits comfortably in one hand with room to spare.
In the US, half-pint beer servings are less standardized. Some bars serve tasters or small pours in glasses that hold 8 ounces, but there’s no single glass shape associated with the term the way there is in the UK.
Quick Size Comparisons
- Shorter than a soda can. A standard 12-ounce can is 50% more liquid than a US half pint.
- Half a standard water bottle. A typical single-serve water bottle holds 16.9 ounces, so a half pint is just under half of that.
- One measuring cup exactly. Fill a liquid measuring cup to the 1-cup line and you’re looking at a US half pint.
- About the size of your fist. A clenched adult fist approximates 8 fluid ounces of volume.