How much caffeine is in Espresso martini?

An espresso martini contains 65 mg of caffeine per 120 ml (4.1 fl oz) serving. This is the total caffeine from a standard recipe that combines a single 30 ml shot of espresso with vodka, coffee liqueur, and simple syrup, shaken and served in a chilled glass. At 65 mg, the cocktail delivers roughly the same caffeine as a single espresso shot (63 mg) plus a negligible trace from the liqueur, making it a moderate caffeine dose for an adult.

That 65 mg works out to about 54 mg of caffeine per 100 ml of liquid, a concentration that is notably higher than drip coffee (40 mg per 100 ml). The reason is simple: an espresso martini is mostly undiluted espresso and alcohol, with no large volume of water. In terms of absolute caffeine, one 120 ml espresso martini is equivalent to 0.7 cups of drip coffee (using a 240 ml cup with 96 mg of caffeine). Most people will feel a mild lift in alertness within 30–45 minutes, peaking around the one-hour mark, with the effect gradually fading over 4–6 hours. The alcohol in the drink can make the stimulant effect feel less sharp, but it does not cancel the caffeine; the two substances act on the body independently.

How long Espresso martini stays in your system

How long the caffeine stays in your system

Caffeine is cleared from the body by a first-order elimination process with a population-average half-life of 5.7 hours. This means that every 5.7 hours, the amount of caffeine still circulating falls by half. For a starting dose of 65 mg, the remaining caffeine follows this pattern: after 3 hours, about 45 mg remains (65 × 0.5^3/5.7 ≈ 45 mg); after 6 hours, 31 mg; after 9 hours, 22 mg; and after 12 hours, 15 mg. The decay is smooth and predictable, though individual rates can vary by a couple of hours due to genetics, liver function, and whether you are a smoker or pregnant.

If you finish an espresso martini at 15:00, by 21:00 you still have about 31 mg of caffeine in your bloodstream. That is roughly the equivalent of a third of a cup of green tea (28 mg per 240 ml) and can be enough to delay sleep onset or reduce deep sleep in sensitive individuals. By 23:00, the residual would be around 24 mg—still a measurable amount. For a more personalized timeline, you can use the caffeine half-life calculator to adjust the decay curve to your own metabolism.

Sleep, daily limits, and who should be cautious

One 65 mg espresso martini uses 16% of the 400 mg daily caffeine guidance set by the FDA for healthy adults. That means you could theoretically consume up to six standard martinis (6 × 65 mg = 390 mg) and still remain within the safe upper limit—though the accompanying alcohol would make that inadvisable. The European Food Safety Authority (EFSA) also sets a single-dose safety limit of 200 mg, so even a double-shot version at 130 mg is well within that boundary. Still, for anyone monitoring their caffeine intake, knowing that each martini consumes 16% of the daily budget is a useful anchor.

When it comes to sleep, the timing of that last espresso martini matters. The latest cup before bedtime calculator suggests that to avoid caffeine-related sleep disruption for a 23:00 bedtime, the last dose of caffeine should be consumed by 14:00–15:00 for most people. A 65 mg dose at 20:00 would leave around 31 mg at 02:00, which is enough to suppress deep sleep in sensitive individuals. The EFSA advises that pregnant women should limit caffeine to 200 mg per day, making one martini 32.5% of that allowance. Adolescents and people with a slow caffeine metabolism (often due to genetic variants in the CYP1A2 gene) should also be more conservative, as the half-life can extend to 8–10 hours. You can find your own weight-based daily limit using the safe daily limit by body weight tool.

How it stacks up against other drinks and snacks

In the “other” category of our caffeine dataset, the espresso martini is an outlier. The category includes treats like hot cocoa (9 mg per 240 ml), dark chocolate (30 mg per 50 g), milk chocolate (10 mg per 50 g), and coffee ice cream (30 mg per 100 g). At 65 mg, the cocktail contains more than 7 times the caffeine of hot cocoa and over twice the caffeine of coffee ice cream. It is the only item in this group that delivers a genuine stimulant effect comparable to a brewed coffee.

When measured against common coffee and energy drinks, the espresso martini holds its own. A 240 ml cup of drip coffee averages 96 mg, so the cocktail is about 0.7 of a standard cup. It sits slightly below a 250 ml can of Red Bull (80 mg) and far below a 473 ml can of Monster Energy (160 mg). Compared with a single espresso shot (63 mg), the martini is essentially the same—the extra 2 mg from the liqueur is negligible. A 240 ml mug of green tea (28 mg) or a 355 ml can of Coca-Cola Zero (34 mg) both look mild by comparison.

This ranking is important because the alcohol in the cocktail can lead people to underestimate its caffeine content. The espresso martini is not a low-caffeine dessert drink; it is a coffee-based cocktail that delivers a moderate dose of caffeine. If you want to compare it directly with other beverages, the side-by-side drink comparison tool lets you line up the numbers for any two drinks in our dataset.

What changes the number for Espresso martini

What changes the caffeine content

The 65 mg figure is a representative estimate for a well-made espresso martini using a single shot of espresso. In practice, the caffeine content can move significantly depending on how the drink is built. The single biggest variable is the espresso shot itself. A standard single shot (30 ml) from a typical arabica-robusta blend contains about 60–80 mg of caffeine, with 63 mg being a widely cited average from the USDA database. If the bartender uses a double shot (60 ml), the caffeine contribution jumps to roughly 120–130 mg, nearly doubling the cocktail’s total.

The coffee liqueur adds very little caffeine—most commercial brands (e.g., Kahlúa) contain about 0.1 mg per ml, so a 15 ml pour contributes only 1.5 mg. Some recipes omit the liqueur entirely, while others use a chocolate liqueur that contains no caffeine at all. The negligible impact of the liqueur means the espresso is the driver of the caffeine load.

A decaf espresso martini is an option for those who want the flavour without the full stimulant load. Decaf espresso is not caffeine-free; a single shot still holds 5–15 mg of caffeine. So a decaf version of the cocktail would contain approximately 6–17 mg of caffeine, depending on the decaffeination process and the number of shots. That is a fraction of the standard version and more in line with a small square of milk chocolate (10 mg).

• Espresso shot count: single (60–80 mg) vs. double (120–130 mg).
• Bean variety and roast: robusta beans contain roughly twice the caffeine of arabica. Darker roasts have slightly less caffeine by weight, but the difference is minimal in a single shot.
• Extraction time: a longer pull (ristretto vs. lungo) can alter caffeine yield, but the typical 25–30 second extraction for a 30 ml shot gives a consistent range.
• Recipe proportions: some bars serve a larger 150 ml martini with an extra half-shot, raising the total to 90–100 mg.

Because of these variables, the caffeine in an espresso martini can reasonably range from about 60 mg to 130 mg. The 65 mg value on this page represents a conservative single-shot baseline, useful for people who want to estimate their intake without assuming the maximum.

Where this figure comes from

Where the 65 mg number comes from

The caffeine content of 65 mg is built from the sum of its parts. We start with the standard 30 ml espresso shot, which the USDA FoodData Central nutrient database consistently reports as containing 63 mg of caffeine (range 60–80 mg depending on bean and preparation). To that we add a conservative 2 mg from the coffee liqueur, based on the 0.1 mg per ml concentration found in Kahlúa and similar products. The total is rounded to 65 mg. This figure agrees with estimates from the Mayo Clinic, which lists a single espresso shot at 63 mg, and with the caffeine content of a typical espresso martini as analysed by independent nutrition databases.

Published values on the internet can vary from around 50 mg to over 100 mg, largely because some sources assume a double shot or a more generous pour. We have not found a large-scale laboratory analysis of bar-made espresso martinis, so the 65 mg value is a best-estimate based on the most common recipe. If a robust study of real-world espresso martinis emerges—or if the standard serving size in venues changes—we will update this figure. The data behind this page is open and versioned in our public caffeine dataset, and you can check the source and methodology there.

Bottom line

An espresso martini delivers 65 mg of caffeine per 120 ml serving, equivalent to roughly 0.7 cups of drip coffee or a single espresso shot. That is 16% of the FDA’s 400 mg daily limit. The cocktail’s caffeine is moderate, not negligible, and its effects can last long after the glass is empty—after 6 hours, around 31 mg remains in the body. Depending on the bar, the actual caffeine may range from 60 mg to 130 mg, so if you are counting milligrams, ask whether a single or double shot was used. Treat this drink as you would a small coffee, not a dessert.