A standard U.S. shot glass holds 1.5 fluid ounces, equal to 3 tablespoons or about 45 ml. Some bars use 1 fluid ounce or 2 fluid ounces, but 1.5 fl oz is the common standard pour.
How Many Oz In A Standard Shot Glass: 1.5 fluid ounces is the standard U.S. shot pour. That equals 3 tablespoons, or about 45 ml using the kitchen conversion of 1 fluid ounce = 2 tablespoons = 30 ml.
A 1-ounce glass is a “single” in some bars, but it is not the usual U.S. standard shot size. For recipes, cocktails, and measuring liquor at home, use 1.5 fl oz unless the recipe names a different pour.
The Short Answer, With Numbers
A standard U.S. shot glass is usually treated as 1.5 fluid ounces. Using kitchen measures, that equals 3 tablespoons, 9 teaspoons, or about 45 ml.
The exact ounce count depends on the glass. Some shot glasses hold 1 fluid ounce, some hold 1.5 fluid ounces, and larger “double shot” glasses often hold 2 fluid ounces.
| Measure | US equivalent | Metric |
|---|---|---|
| 1 teaspoon | – | 5 ml |
| 1 tablespoon | 3 teaspoons | 15 ml |
| 1 fluid ounce | 2 tablespoons | 30 ml |
| 1/4 cup | 4 tablespoons | 59 ml |
| 1/2 cup | 8 tablespoons | 118 ml |
| 1 cup | 16 tbsp / 8 fl oz | 237 ml |
Standard Shot Conversion
If your recipe calls for 1 standard shot, measure 1.5 fl oz. Since 1 fl oz equals 2 tablespoons, 1.5 fl oz equals 3 tablespoons.
In teaspoons, that same shot is 9 teaspoons. The math is simple: 3 tablespoons multiplied by 3 teaspoons per tablespoon equals 9 teaspoons.
In metric volume, 1 standard shot is about 45 ml. That comes from 1 fl oz at 30 ml, plus half of that amount, 15 ml.
Common Shot Glass Sizes
A 1 fl oz shot glass holds 2 tablespoons, or about 30 ml. This is smaller than the standard 1.5 fl oz pour.
A 1.5 fl oz shot glass holds 3 tablespoons, or about 45 ml. This is the number most people mean by a standard U.S. shot.
A 2 fl oz pour equals 4 tablespoons, which is the same tablespoon count listed for 1/4 cup. In metric terms, 2 fl oz is about 60 ml.
So if a glass fills exactly to 1/4 cup, it is not a single standard shot. It is closer to a 2 fl oz double pour.
Worked Kitchen Examples
If a drink recipe says “add 2 shots,” using standard U.S. shots means 3 fl oz total. That is 6 tablespoons, or about 90 ml.
If a sauce recipe calls for 1/2 shot, measure 0.75 fl oz. That is 1.5 tablespoons, or about 22.5 ml.
If you only have a tablespoon, use 3 level tablespoons for 1 standard shot. For a 1 fl oz mini shot, use 2 tablespoons.
If you only have teaspoons, use 9 teaspoons for a standard 1.5 fl oz shot. Use 6 teaspoons for a 1 fl oz shot.
Bottom line: for U.S. kitchen measuring, count a standard shot glass as 1.5 oz, unless the glass itself is marked differently.
Standard Shot Glass Ounces
A standard U.S. shot glass holds 1.5 fluid ounces. Using the kitchen conversion of 1 fluid ounce = 2 tablespoons = 30 ml, a standard shot is 3 tablespoons, or about 45 ml.
The confusion comes from the glass, not the measure. Many shot glasses look “standard,” but their actual capacity can be 1 ounce, 1.25 ounces, 1.5 ounces, or 2 ounces when filled to the rim.
Quick Shot Glass Conversion Table
| Shot size | Tablespoons | Milliliters | Best use |
|---|---|---|---|
| 1 fl oz | 2 tbsp | 30 ml | Small pour or tasting glass |
| 1.25 fl oz | 2 tbsp + 1 1/2 tsp | 37.5 ml | Older or smaller bar jigger side |
| 1.5 fl oz | 3 tbsp | 45 ml | Standard U.S. shot |
| 2 fl oz | 4 tbsp | 60 ml | Large shot glass or double-style pour |
If a cocktail recipe calls for “1 shot” and gives no other number, measure 1.5 fluid ounces. That equals 3 tablespoons, so you can measure it accurately without a shot glass.
Worked example: a recipe needs 2 shots of liquor. At the U.S. standard of 1.5 fl oz each, 2 shots = 3 fl oz. Since 1 fl oz = 2 tablespoons, that is 6 tablespoons.
Another example: a drink calls for 1/2 shot of syrup. Half of 1.5 fl oz is 0.75 fl oz. Since 1 fl oz is 2 tablespoons, 0.75 fl oz equals 1 1/2 tablespoons.
For batch drinks, 4 standard shots equal 6 fl oz. That is 12 tablespoons, or 3/4 cup, because 1/2 cup is 8 tablespoons and 1/4 cup is 4 tablespoons.
Rim Capacity vs Measured Shot
A shot glass labeled 2 ounces may not mean a standard serving is 2 ounces. It may simply hold 2 fl oz when filled to the brim. A measured standard shot is still 1.5 fl oz.
This matters because pouring to the rim can overmeasure. If your glass holds 2 fl oz and you fill it completely, you poured 0.5 fl oz more than a standard shot.
That extra 0.5 fl oz is 1 tablespoon, because 1 fl oz equals 2 tablespoons. In a round of 4 drinks, that overpour becomes 2 extra fl oz, or 4 tablespoons.
Mini shot glasses are another edge case. If the glass holds only 1 fl oz, then 1 full glass is not a standard U.S. shot. You would need 1 1/2 of those glasses to make 1.5 fl oz.
The most reliable answer: use 1.5 fluid ounces for a standard shot glass measure in U.S. recipes. For precision, measure 3 tablespoons instead of relying on the glass size.
US Versus International Shots
In the US, a standard shot is usually 1.5 fluid ounces. Using the kitchen conversion 1 fluid ounce = 2 tablespoons = 30 ml, that is 3 tablespoons, or about 45 ml.
That matters because many imported shot glasses are not 1.5 oz. A glass that looks “standard” may hold 1 oz, 1.25 oz, 1.5 oz, or a metric pour such as 25 ml, 30 ml, 35 ml, or 50 ml.
Quick size comparison
| Shot size | US measure | Metric equivalent | Kitchen equivalent |
|---|---|---|---|
| Small US pour | 1 fl oz | 30 ml | 2 tbsp |
| US standard shot | 1.5 fl oz | 45 ml | 3 tbsp |
| Double US shot | 3 fl oz | 90 ml | 6 tbsp |
| Metric single, small | About 0.83 fl oz | 25 ml | 1 tbsp + 2 tsp |
| Metric single, common | 1 fl oz | 30 ml | 2 tbsp |
| Metric larger single | About 1.17 fl oz | 35 ml | 2 tbsp + 1 tsp |
| Metric double | About 1.67 fl oz | 50 ml | 3 tbsp + 1 tsp |
For US recipes, read “1 shot” as 1.5 fl oz unless the recipe says otherwise. That equals 3 tablespoons, so you can measure it accurately without a shot glass.
For international recipes, do not assume the US size. A British-style 25 ml single is much smaller than a US 1.5 oz shot. The difference is 20 ml, or about 1 tablespoon plus 1 teaspoon.
A 30 ml shot is exactly 1 fluid ounce by the kitchen conversion. If a cocktail calls for 2 oz of spirit, that equals two 30 ml shots, but only 1⅓ US standard shots.
A 50 ml pour is not the same as a US double. A US double is 3 fl oz, or 90 ml. A 50 ml pour is closer to 1.67 fl oz, so it is 40 ml short of a US double.
Worked examples
If a US cocktail calls for 2 shots of whiskey, use 3 fl oz total. That is 6 tablespoons, or about 90 ml.
If a European recipe calls for 2 shots and defines each shot as 25 ml, use 50 ml total. That is about 1.67 fl oz, not 3 fl oz.
If your shot glass holds 2 tablespoons to the rim, it is a 1 oz glass. For a US standard 1.5 oz shot, fill it once, then add 1 more tablespoon.
If your glass holds 3 tablespoons to the rim, it matches the US standard shot size. One full glass equals 1.5 fl oz, or about 45 ml.
If your glass is marked 50 ml, one full pour is larger than a US shot by about 5 ml. For casual mixing, that is slightly over 1.5 oz; for precise recipes, measure by tablespoons or ml.
How To Measure A Shot
In U.S. drink recipes, a standard shot is commonly measured as 1.5 fluid ounces. Using the supplied conversion, that equals 3 tablespoons or about 45 ml.
Fast Measurement Method
- 1. Confirm the target size. Use 1.5 fl oz for a standard shot unless your recipe names another size. A 1 fl oz pour is 2 tablespoons, while a 2 fl oz pour is 4 tablespoons.
- 2. Use tablespoons if you do not trust the glass. Since 1 tablespoon equals 15 ml, measure 3 level tablespoons for a 1.5 fl oz shot. This is the most reliable kitchen method.
- 3. Use fluid ounces for bar tools. If your jigger has ounce marks, fill to 1.5 fl oz. If it has only 1 oz and 2 oz sides, fill the 1 oz side once, then add half of it again.
- 4. Convert to milliliters when needed. Since 1 fl oz equals 30 ml, a 1.5 fl oz shot is 45 ml. A 1 oz shot is 30 ml, and a 2 oz double is 60 ml.
- 5. Check oversized shot glasses. Many decorative shot glasses hold more than one shot. Fill with water, pour into a tablespoon, and count. If it takes 4 tablespoons, the glass holds 2 fl oz.
- 6. Measure to the fill line, not the rim. Some glasses have thick bases or flared tops. If a glass holds 2 fl oz to the rim, a 1.5 fl oz shot may sit below the top edge.
Worked Examples
Example 1: A recipe calls for 1 shot of whiskey. Measure 3 tablespoons. That gives 1.5 fl oz, or about 45 ml.
Example 2: A cocktail calls for 2 shots of tequila. Measure 6 tablespoons total. That equals 3 fl oz, or about 90 ml.
Example 3: You have a 1/4 cup measure. Since 1/4 cup equals 4 tablespoons, it holds 2 fl oz. Fill it 3/4 full for a 1.5 fl oz shot.
Example 4: Your shot glass holds 1 fl oz when tested with water. That is short of a standard 1.5 fl oz shot. Use one full glass plus half a glass.
| Pour | Fluid Ounces | Tablespoons | Metric |
|---|---|---|---|
| Small shot | 1 fl oz | 2 tbsp | 30 ml |
| Standard shot | 1.5 fl oz | 3 tbsp | 45 ml |
| Double shot | 2 fl oz | 4 tbsp | 60 ml |
| 1/4 cup pour | 2 fl oz | 4 tbsp | 59 ml |
For accuracy, measure liquid at eye level on a flat counter. A meniscus or slanted surface can easily change a small pour by several ml.
Shot Glass Size Chart
A standard U.S. shot glass holds 1.5 fluid ounces. Using the kitchen conversion of 1 fluid ounce = 2 tablespoons = 30 ml, a standard shot is 3 tablespoons, or about 45 ml.
| Shot glass size | Fluid ounces | Tablespoons | Approx. ml | Best use |
|---|---|---|---|---|
| Small shot | 1 fl oz | 2 tbsp | 30 ml | Small pours, tastings |
| Standard U.S. shot | 1.5 fl oz | 3 tbsp | 45 ml | Cocktails, bar recipes |
| Double shot | 3 fl oz | 6 tbsp | 90 ml | Double pour, strong drinks |
| Large shot glass | 2 fl oz | 4 tbsp | 59 ml | Measured pours, dessert shots |
Standard Shot Glass Measurement
The number to remember is 1.5 fl oz per standard shot glass. Since 1 fl oz equals 2 tablespoons, multiply 1.5 by 2: a standard shot equals 3 tablespoons.
For metric measuring, use 1 fl oz = 30 ml. That makes a 1.5 fl oz shot about 45 ml. This is the most useful conversion when a cocktail recipe lists ml instead of ounces.
Worked example: if a recipe calls for 2 standard shots, multiply 1.5 fl oz by 2. That gives 3 fl oz, which equals 6 tablespoons, or about 90 ml.
Another example: 4 standard shots equal 6 fl oz. Since 1 cup is 8 fl oz, 4 shots are 3/4 cup. In tablespoons, that is 12 tablespoons.
When A Shot Glass Is Not 1.5 Oz
Not every glass labeled “shot glass” is the standard size. Some hold only 1 fl oz, which is 2 tablespoons or 30 ml. Others hold 2 fl oz, which is 4 tablespoons or about 59 ml.
A tall novelty shot glass may look like a double, but shape is not a measurement. If accuracy matters, fill it with tablespoons: 3 tablespoons means 1.5 fl oz; 4 tablespoons means 2 fl oz.
Edge case: a “double shot glass” often holds 3 fl oz. That is not 2 fl oz; it is two standard 1.5 fl oz shots. In kitchen measures, it equals 6 tablespoons.
If a cocktail recipe says “1 shot” and gives no other measure, use 1.5 fl oz as the U.S. standard. If the recipe is from a bar manual, check whether it defines its own pour size.
For batch drinks, convert before scaling. Six standard shots equal 9 fl oz. Since 1 cup is 8 fl oz, that is 1 cup plus 1 fl oz, or 18 tablespoons total.
Common Pouring Mistakes
The most common mistake is treating every shot glass as 1 fluid ounce. In many U.S. bar recipes, a standard shot is 1.5 fluid ounces, which equals 3 tablespoons or about 45 ml.
If your recipe calls for 1 shot and you pour only 1 fluid ounce, you are short by 0.5 fluid ounce. That is 1 tablespoon, or one-third of a standard 1.5-ounce shot.
Using the Glass Rim as the Measure
Many shot glasses hold more than their labeled pour if filled to the brim. A glass marked for 1.5 ounces may physically hold closer to 2 fluid ounces when topped off.
That extra 0.5 fluid ounce equals 1 tablespoon. In a drink with 4 shots, that mistake adds 2 fluid ounces total, or 4 tablespoons.
Worked example: a recipe needs 3 standard shots. That is 4.5 fluid ounces, 9 tablespoons, or about 135 ml. If you brim-fill 3 glasses at 2 ounces each, you pour 6 ounces instead.
The overpour is 1.5 fluid ounces. That is the same as adding one extra standard shot to the recipe.
Confusing Ounces by Volume and Weight
A fluid ounce measures volume. An ounce measures weight. Do not use a kitchen scale to measure a shot unless you know the exact density of the liquid.
For shot glasses, use fluid ounces, tablespoons, teaspoons, or milliliters. The useful kitchen conversions are 1 fluid ounce = 2 tablespoons = 30 ml.
A 1.5-fluid-ounce shot is 3 tablespoons. It is also 9 teaspoons, because 1 tablespoon equals 3 teaspoons.
Misreading Small Measuring Marks
Some jiggers show 0.5, 0.75, 1, 1.5, or 2 fluid ounces. A 0.5-ounce mark is only 1 tablespoon. A 0.75-ounce pour is 1.5 tablespoons.
If a drink calls for 0.75 ounce and you pour 1 ounce, the error is 0.25 ounce. That is 1/2 tablespoon, or 1.5 teaspoons.
Edge case: if a recipe says “half shot,” check what shot size it assumes. Half of a 1.5-ounce shot is 0.75 ounce. Half of a 1-ounce shot is 0.5 ounce.
Scaling Recipes Without Recalculating
Do not multiply “shot glasses” unless all glasses are the same size. Multiply the fluid ounces instead.
Example: 8 standard shots equals 12 fluid ounces. Since 1 cup is 8 fluid ounces, that is 1 1/2 cups.
Another example: 16 standard shots equals 24 fluid ounces. That is 3 cups, because 1 cup equals 8 fluid ounces.
For batch drinks, convert before pouring: 1 shot = 1.5 fluid ounces = 3 tablespoons = about 45 ml. Then multiply by the number of servings.
Counting Free-Pours as Exact Shots
A fast free-pour is not a measurement. If accuracy matters, measure with a jigger or tablespoon.
For a standard 1.5-ounce shot, measure 3 level tablespoons. For a 1-ounce shot, measure 2 level tablespoons. For a 0.5-ounce splash, measure 1 tablespoon.
The biggest red flag is inconsistent glassware. A tall narrow shot glass and a short wide one can look equally full but hold different volumes.
When the recipe depends on balance, ignore the appearance of the glass. Use the numeric pour: fluid ounces first, then tablespoons or milliliters as needed.
Frequently Asked Questions
How many ounces are in a standard shot glass?
In the U.S., a standard shot glass usually holds 1.5 fluid ounces. That equals 3 tablespoons, since 1 fluid ounce is 2 tablespoons. Some bars use smaller or larger pours, but 1.5 fl oz is the common cocktail recipe measure.
Is a shot glass 1 ounce or 1.5 ounces?
A U.S. shot is most commonly 1.5 fluid ounces, not 1 ounce. A 1-ounce pour is often called a small shot or pony shot. If you are following a drink recipe, assume 1 shot means 1.5 fl oz unless stated otherwise.
How many tablespoons are in a shot glass?
A standard 1.5-fluid-ounce shot equals 3 tablespoons. The conversion is direct: 1 fluid ounce equals 2 tablespoons, so 1.5 fluid ounces equals 3 tablespoons. This is useful if you do not have a jigger or marked shot glass.
How many milliliters are in a standard shot?
A standard U.S. 1.5-fluid-ounce shot is about 45 ml. Using the kitchen conversion 1 fluid ounce equals 30 ml, multiply 1.5 by 30. Some shot glasses are marked at 44 ml or 45 ml, but the practical measure is 45 ml.
How can I measure a shot without a shot glass?
Measure 3 tablespoons for one standard U.S. shot. Since 1 tablespoon is 15 ml, 3 tablespoons equal 45 ml, which is the same as a 1.5-fluid-ounce pour. You can also use 1 fluid ounce plus 1 tablespoon.
