A standard US shot contains 1.5 fluid ounces of liquor, though actual pours range from 1.0 to 2.0 ounces depending on the bar and location.
Order a shot anywhere in the United States, and what you get depends on who pours and where you are. There’s no federal law setting a shot size — it’s an industry convention held together by practice rather than regulation. The standard 1.5 ounces is the convention, but real pours vary.
What Is a Standard US Shot?
The CDC defines a standard drink as 1.5 fluid ounces of 80-proof distilled spirits, which contains 0.6 fluid ounces of pure alcohol. That 1.5-ounce measure is the benchmark across American bars and restaurants, even though no federal law requires it.
Utah is the only state that legally defines a shot. The state requires a shot to be 1.5 fluid ounces, consistent with the national standard. This contradicts the common myth that Utah mandates a 1-ounce pour.
A standard double shot is double the base: 3.0 fluid ounces.
How Many Milliliters Is a US Shot?
A 1.5-ounce US shot equals approximately 44 milliliters. This differs from shot sizes in other countries:
- United Kingdom: 25 ml per single shot (roughly 0.85 oz)
- European Union: 30 to 40 ml per shot (1.0 to 1.35 oz)
- Japan and some other nations: 30 ml is common
When traveling, the difference matters because the same “one shot” order delivers noticeably less alcohol outside the US.
Do All Bars Pour the Same Shot?
No. While 1.5 ounces is the industry standard, pours vary by establishment type:
- Dive bars and casual spots: often pour 1.0 to 1.25 ounces per “single”
- Standard cocktail bars: stick to 1.5 ounces
- Upscale or craft bars: may pour 2.0 ounces as the standard single
Bartenders also differ in pour style. Some free-pour and overdeliver, while others use a jigger to measure exactly. A jigger — the hourglass-shaped tool behind every bar — typically has a 1.5-ounce side and a 0.75-ounce side.
Shot glasses themselves hold between 1.0 and 2.0 ounces. The glass you drink from is not a reliable measuring tool; it’s the pour volume that matters.
Does a Shot of Higher-Proof Liquor Have More Alcohol?
Yes. A 1.5-ounce shot of 80-proof liquor (40% ABV) contains 0.6 ounces of pure alcohol. At higher proofs, the same 1.5-ounce volume packs more alcohol:
For example, a 100-proof bourbon contains roughly 50% alcohol by volume. A 1.5-ounce shot delivers about 0.75 ounces of pure alcohol — substantially more than the standard drink definition. The CDC’s standard drink measure only applies to 80-proof spirits.
This is a common misconception: the shot’s size and the shot’s alcohol content are different things. A 1.5-ounce pour of 120-proof overproof rum is the same volume as a standard shot but contains nearly twice the alcohol.
| Shot Size | Ounces | Milliliters |
|---|---|---|
| Standard US shot | 1.5 oz | 44 ml |
| Standard double | 3.0 oz | 89 ml |
| Dive bar pour | 1.0 oz | 30 ml |
| Upscale bar pour | 2.0 oz | 59 ml |
| UK single shot | 0.85 oz | 25 ml |
| EU shot | 1.0–1.35 oz | 30–40 ml |
| Utah legal shot | 1.5 oz | 44 ml |
FAQs
Is a shot of whiskey the same size as a shot of vodka?
Yes, the standard pour is the same 1.5 ounces regardless of the spirit type — a shot of whiskey, vodka, rum, or tequila all follow the same 1.5-ounce convention unless your bar uses a different house standard.
Can I use an ordinary measuring cup to check a shot?
Yes, a standard liquid measuring cup works fine: pour into the cup and check the markings. A 1.5-ounce shot lands between the 1 and 2 ounce lines. But shot glasses are not measuring tools — use a jigger for accuracy if you’re making drinks at home.
How many calories are in a standard shot of liquor?
One 1.5-ounce shot of 80-proof spirits contains roughly 97 calories. Higher-proof spirits have more alcohol and therefore more calories per shot. Mixers, not the liquor itself, typically add most of the caloric load.
References & Sources
- CDC. “Standard Drink Sizes and Alcohol Content.” Defines 1.5 oz of 80-proof spirits as one standard drink.
- Grey Goose. “How Much Is a Shot of Vodka?” Confirms the 1.5 oz standard for US shots.
- Wikipedia. “Alcohol Measurements.” Covers international shot sizes and Utah’s legal definition.
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