How Many Milliliters Are In One Shot? | Quick Pour Facts

Curious about how much liquid lands in a shot glass? Bars don’t pour the same size across the map, and home jiggers add another twist. This guide breaks down common measures in milliliters, why bar rules differ, and how to convert between ounces and milliliters without guesswork.

Milliliters In A Bar Shot: Global Norms

Across pubs and tasting rooms, a single pour tends to sit near the 30–45 ml band. The U.S. bar standard centers on 44 ml for a single jigger of 80-proof spirits. In England and Wales, venues choose either 25 ml or 35 ml for gin, rum, vodka, and whisky. Ireland’s bar measure lands at 35.5 ml. Australia commonly uses a 30 ml “nip.” Canada often aligns service with a 43–44 ml pour for spirits at 40% ABV.

The table below shows typical single-measure sizes you’ll meet in bars and restaurants. Local laws or house policy shape these numbers, so expect posted notices or menu notes in some regions.

Country/Region	Single Pour (ml)	Notes
United States	44	Common single jigger in bars
England & Wales	25 or 35	Premises pick one size
Ireland	35.5	Pub measure
Scotland & N. Ireland	35	Common single
Australia	30	“Nip”
Canada	43–44	Often matches U.S. jigger

Why Shot Sizes Differ From Place To Place

Bar service follows local measurement law, brand recipes, and staff workflow. Where law sets fixed serving sizes, venues post menus to match. Where law is looser, owners set house standards, then train staff to pour with jiggers or measured spouts. Glassware shape can trick the eye, so bars rely on tools rather than free-pouring for consistent drinks.

Legal Measures And Posted Choices

In some countries, venues must pour set quantities for certain spirits. In England and Wales, a venue declares 25 ml or 35 ml for a single and uses that across the menu. Ireland sets a 35.5 ml pub measure. Australia’s guidance pairs the 30 ml nip with a “one standard drink” concept for 40% spirits. North America leans on standard-drink education and local rules; many bars still pour around 1.5 fl oz for a house single.

Single, Double, And Tasting Pours

Menus often list a “single,” a “double,” and smaller tasting sips. A double usually doubles the venue’s single. So a 25 ml house single becomes a 50 ml double, while a 35 ml single becomes a 70 ml double. In the U.S., a double often hits 59–60 ml. Flights use smaller tasters that can range from 10 to 22 ml per glass, depending on style and price point.

Milliliter Conversions You Can Use Behind The Bar

When recipes print ounce measures, a simple conversion keeps you on track. One U.S. fluid ounce equals 29.57 ml. A common single jigger at 1.5 fl oz equals 44 ml, and a 2 fl oz pour equals 59 ml. Many home bar tools carry these two markings, so you can hit classic specs without math each time.

Quick Formula: Ounces To Milliliters

Multiply ounces by 29.57. That’s it. For partial pours, round to the nearest whole milliliter for speed. A 1 oz measure becomes 30 ml in practice; 1.25 oz is 37 ml; 1.5 oz is 44 ml; 2 oz is 59 ml.

Metric Bar Gear

Metric jiggers often mark 20 ml, 30 ml, and 40 ml. If your recipe lists 1 oz, reach for the 30 ml cup. If it lists 1.5 oz, use 45 ml and skim a touch, or keep a 44 ml line in mind. Spouted bottles with calibrated restrictors also help hit repeatable numbers during service.

Alcohol Content And Standard Drinks

Shot size and strength are different levers. A small pour of strong liquor can match a larger pour of weaker liquor in pure alcohol. U.S. education material pegs one standard drink at 14 g of pure alcohol, which lines up with 1.5 fl oz of 40% ABV spirits (NIAAA). Canada defines a standard drink as 17.05 ml of pure alcohol and often shows a 43–44 ml spirit measure at 40% ABV as one drink. Australia treats 10 g of pure alcohol as one standard drink, and a 30 ml nip of 40% spirits fits that model.

What This Means For Recipes

Classic specs tend to balance around the local single. A sour built on a 44 ml base spirit lands differently than one built on 30 or 35 ml. When you swap regions or tools, scale the rest of the drink so the ratio stays true: base spirit, sweetener, and acid in the same proportion.

Troubleshooting Pours At Home

Home gear varies a lot. Some novelty shot glasses hold 60 ml or more, which can throw off recipes. Check the markings on your jigger or measure the glass with water and a scale. One gram of water equals one milliliter, so a kitchen scale gives a quick read on capacity.

Common Causes Of Overpouring

Unmarked glassware, dim light, and rushed steps push measures high. Training yourself to count to a set beat with a measured pour spout can help. So can pre-batching spirit bases in the same bottle size and using a funnel to refill accurately.

When A Recipe Calls For A “Shot”

Writers use the word loosely. In U.S. cookbooks, that tends to mean 1.5 fl oz. In the U.K., context often points to the house single at 25 or 35 ml. If a drink feels boozy or thin, adjust by 5 ml steps until balance returns.

Handy Conversions And House Standards

Here are common conversions you can pin to your bar cart. The left column lists ounce measures you’ll see in recipes. The middle column shows the exact ml value. The right column gives a practical rounded ml pour that keeps service moving.

Ounces	Exact ml	Practical ml
1.0	29.57	30
1.25	36.96	37
1.5	44.36	44
1.75	51.61	52
2.0	59.15	59

Method Notes And Source Benchmarks

This guide aligns with public health and legal sources on serving sizes and standard drinks. U.S. materials from the National Institute on Alcohol Abuse and Alcoholism describe a 1.5 fl oz pour as one standard drink for 40% spirits. U.K. rules set spirit servings at either 25 ml or 35 ml for specific categories. Canadian guidance lists a 1.5 oz (about 43 ml) shot as one standard drink. Australian guidance pairs a 30 ml nip with its standard drink model for 40% spirits.

See the NIAAA standard drink page and the U.K. specified quantities for primary definitions. Region-specific posters from Canada and Australia expand on the same theme.

With the figures above, you can read any recipe, pick the right jigger, and hit the same balance every time—whether your local bar serves 25 ml, 30 ml, 35.5 ml, or 44 ml singles.

Regional Breakdowns In Detail

United States

Most bars pour a 1.5 fl oz jigger, which converts to 44 ml. Some cocktail bars run 1.25 fl oz in spirit-forward builds to keep balance with lower-proof modifiers. Utah law pegs a primary spirit pour at 1.5 fl oz in many settings, so menus there match the national norm.

United Kingdom

English and Welsh premises pick either 25 ml or 35 ml for a single in gin, rum, vodka, and whisky. Menus and back-bar signs show the chosen size so guests know a double will be 50 ml or 70 ml. Scotland and Northern Ireland lean toward 35 ml singles in many spots.

Canada

Guidance ties one drink of spirits at 40% ABV to about 43 ml. That’s why many Canadian bars align service near the U.S. 44 ml jigger. Some venues still speak in ounces; house staff translate that to metric in prep sheets.

Australia

Menus and training material use a 30 ml nip for spirits at 40% ABV. Many bars stock jiggers with 15 ml and 30 ml cups, which makes half-measures easy during speed service. When a recipe lists 45 ml, bartenders stack a 30 ml and a 15 ml pour.

How To Measure A Perfect Single

1. Pick the house standard. Choose 25 ml, 30 ml, 35 ml, or 44 ml and stick with it for base spirits.
2. Match your tools. Keep a jigger that hits your standard on one side with a handy half-measure on the other.
3. Level the pour. Hold the jigger at eye height, pour to the rim, and drop it in one motion to avoid drips.
4. Train a count. With a measured pour spout, time a steady count for your single. Repeat until the count and the jigger match.
5. Audit with water. Fill to your line with water and weigh it. Grams equal milliliters, so you’ll see drift fast.

Myths That Skew Recipes

• “A shot is always the same.” Sizes swing by venue and country. Read the menu or ask the server.
• “Free-pouring beats jiggers.” Speed counts in service, yet measured tools keep specs tight and waste low.
• “Bigger glass, bigger taste.” Flavor balance comes from ratios, not the vessel. Keep the measure; scale the rest.

When People Mean Coffee, Not Spirits

In cafés, a “single shot” means espresso, not liquor. A café single often ranges from 25 to 30 ml of brewed espresso, while a double sits near 50 to 60 ml. The numbers describe brew yield, not alcohol. Recipes in drinks books usually make the context clear, but if a list says “espresso shot,” it points to coffee.