You love your espresso, but how much caffeine are you actually getting per shot? Whether you are tracking your daily intake or just curious before ordering that third double, here is what you need to know.
A single shot of espresso (1 oz) contains roughly 63 mg of caffeine on average. That said, the actual amount ranges from about 45 mg to 118 mg depending on the coffee chain, bean type, roast level, and dose of ground coffee used. A double shot typically delivers 120 to 136 mg of caffeine.
Below, we break down the exact caffeine content per shot, compare espresso to regular drip coffee, and explain how many shots you can safely enjoy each day.
How Much Caffeine Is in a Shot of Espresso?
A standard single shot of espresso is about 1 fluid ounce (30 ml) of concentrated coffee pulled under high pressure. The caffeine content varies quite a bit between coffee chains because each one uses a different blend, dose, and machine calibration.
Here is a breakdown of the caffeine in a single and double shot at popular US coffee chains:
| Coffee Chain | Single Shot (1 oz) | Double Shot (2 oz) |
|---|---|---|
| Starbucks | 75 mg | 150 mg |
| Dunkin’ | 118 mg | 236 mg |
| Peet’s Coffee | 70 mg | 140 mg |
| Tim Hortons | 45 mg | 90 mg |
| Dutch Bros | 46.75 mg | 93.5 mg |
| Average | ~63 mg | ~126 mg |
The range is significant. A single shot at Tim Hortons (45 mg) packs less than half the caffeine of a Dunkin’ shot (118 mg). The difference comes down to the bean blend, grind fineness, and the weight of ground coffee each chain loads into the portafilter.
How Much Caffeine Is in a Double Shot of Espresso?
A double shot (doppio) of espresso contains roughly 126 mg of caffeine on average, though it can range from 90 mg to 236 mg. Most specialty coffee shops and chains now pull double shots as the default serving, so if you order a “shot of espresso” at Starbucks, you are likely getting a doppio (150 mg).
Here is a quick reference for the caffeine in multiple espresso shots, based on the average of 63 mg per shot:
| Number of Shots | Average Caffeine | % of FDA Daily Limit (400 mg) |
|---|---|---|
| 1 shot | 63 mg | 16% |
| 2 shots (doppio) | 126 mg | 32% |
| 3 shots | 189 mg | 47% |
| 4 shots | 252 mg | 63% |
| 5 shots | 315 mg | 79% |
| 6 shots | 378 mg | 95% |
Many popular espresso drinks use multiple shots. A shaken espresso at Starbucks uses three shots (225 mg), while a large Americano or latte typically contains two shots. Keep this in mind when counting your daily intake.
Espresso vs Coffee: Which Has More Caffeine?
This is one of the most common questions in coffee, and the answer depends on whether you are comparing per ounce or per serving.
Ounce for ounce, espresso has far more caffeine than drip coffee. A single ounce of espresso contains about 63 mg of caffeine, while one ounce of drip coffee contains only about 12 mg. That makes espresso roughly 5x more concentrated.
However, serving sizes tell a different story. A standard 8 oz cup of drip coffee contains 80 to 100 mg of caffeine, while a single espresso shot has about 63 mg. A large 16 oz drip coffee can pack 190 mg or more, easily surpassing a double shot of espresso.
| Drink | Serving Size | Caffeine | Caffeine per oz |
|---|---|---|---|
| Single espresso shot | 1 oz | 63 mg | 63 mg |
| Double espresso shot | 2 oz | 126 mg | 63 mg |
| Drip coffee (small) | 8 oz | ~96 mg | ~12 mg |
| Drip coffee (medium) | 12 oz | ~144 mg | ~12 mg |
| Drip coffee (large) | 16 oz | ~192 mg | ~12 mg |
| Cold brew | 12 oz | ~150 mg | ~12.5 mg |
So while espresso is more concentrated, you generally consume a much smaller volume. If you are trying to limit caffeine, switching from a large drip coffee to a single or double espresso could actually lower your intake.
What Affects the Caffeine Content in Espresso?
If you are wondering why the caffeine count can vary so much from shop to shop (and even shot to shot), several factors are at play.
Coffee Bean Type
The type of coffee bean has the biggest impact on caffeine. Robusta beans contain roughly twice the caffeine of Arabica beans (about 2.2% vs 1.2% caffeine by weight). Most specialty coffee shops use 100% Arabica, which is why their espresso often has less caffeine than chains that blend in Robusta for a stronger kick.
If you have ever wondered whether espresso beans are different from regular coffee beans, the answer is no. “Espresso beans” are just coffee beans roasted and blended for espresso brewing. The caffeine difference comes from the bean species, not the label.
Roast Level
There is a common myth that dark roasts have more caffeine because they taste “stronger.” In reality, light roasts contain slightly more caffeine per bean because roasting breaks down caffeine molecules. However, the difference is minimal. If you measure your coffee by weight (as most cafes do), the roast level barely changes the caffeine in your cup.
Curious about whether blonde espresso is stronger? It does have a touch more caffeine than a standard dark roast, but the difference is modest.
Dose (Grams of Coffee)
The amount of ground coffee packed into the portafilter directly affects caffeine output. A standard single shot uses 7 to 9 grams of coffee. A double shot uses 14 to 18 grams. Some specialty shops “updose” to 20 grams or more for a double, which increases the caffeine proportionally.
Grind Size and Extraction Time
A finer grind and longer extraction pull more caffeine from the grounds. A well-calibrated espresso shot takes 25 to 30 seconds to pull. If the grind is too coarse or the shot runs too fast, less caffeine ends up in the cup. This is why having the right grinder matters for consistent results.
Caffeine in Espresso-Based Drinks
Most of the espresso drinks you order at a coffee shop are built on single or double shots. Here is how much caffeine you can expect in popular espresso-based drinks (based on standard recipes):
| Drink | Typical Shots | Estimated Caffeine |
|---|---|---|
| Cappuccino | 1 to 2 | 63 to 126 mg |
| Latte | 1 to 2 | 63 to 126 mg |
| Americano | 2 | ~126 mg |
| Mocha | 1 to 2 | 63 to 126 mg |
| Flat white | 2 | ~126 mg |
| Shaken espresso | 3 | ~189 mg |
| Macchiato | 1 to 2 | 63 to 126 mg |
Keep in mind that larger sizes (grande, venti) may add an extra shot, pushing the caffeine higher. Always check with the barista if you are monitoring your intake.
How Many Espresso Shots Can You Safely Drink Per Day?
The US Food and Drug Administration (FDA) recommends a daily caffeine limit of 400 mg for healthy adults. That is equivalent to roughly 6 average espresso shots, or about 3 shots if you are drinking Dunkin’ espresso.
Here are some general guidelines:
- Healthy adults: Up to 400 mg per day (roughly 4 to 6 shots)
- Pregnant or nursing: The American College of Obstetricians and Gynecologists recommends no more than 200 mg per day (about 2 to 3 shots)
- Teens: The American Academy of Pediatrics discourages caffeine for children and suggests teens limit intake
- Caffeine-sensitive individuals: Even 1 to 2 shots may cause jitteriness or trouble sleeping
Keep in mind that espresso is rarely the only source of caffeine in your day. Tea, chocolate, energy drinks, and some medications also contain caffeine, so factor those in when calculating your total.
How Much Caffeine Is in Decaf Espresso?
A single shot of decaf espresso contains about 3 to 16 mg of caffeine. Decaf is not completely caffeine-free. The decaffeination process (typically Swiss Water or CO2 method) removes around 97% of the caffeine, leaving a small amount behind.
For reference, a decaf shot at Starbucks contains about 10 mg. If you are extremely sensitive to caffeine or drinking espresso late in the day, decaf is a solid option, but it is worth knowing it is not truly zero caffeine.
Wrapping Up
A single shot of espresso contains roughly 63 mg of caffeine on average, with a real-world range of 45 to 118 mg depending on the coffee chain and preparation. A double shot doubles that to about 126 mg. Compared to drip coffee, espresso is far more concentrated per ounce, but you drink much less of it per serving.
For most healthy adults, 4 to 6 espresso shots per day falls within the FDA’s 400 mg recommendation. If you want to dial in your caffeine more precisely, pay attention to the bean type (Robusta vs Arabica), roast level, and dose your barista uses.
Frequently Asked Questions
A single shot of espresso contains about 63 mg of caffeine on average. The range across major US coffee chains is 45 mg (Tim Hortons) to 118 mg (Dunkin’). The variation depends on the bean blend, dose, and extraction method.
A double shot (doppio) of espresso has roughly 126 mg of caffeine on average, based on two standard single shots. At Starbucks, a doppio contains about 150 mg, while at Dunkin’ it can reach 236 mg.
Not exactly. A single espresso shot has about 63 mg of caffeine, while a standard 8 oz cup of drip coffee has 80 to 100 mg. Espresso is more concentrated per ounce, but a full cup of coffee delivers more total caffeine because the serving size is much larger.
200 mg of caffeine is a moderate amount, roughly equivalent to 3 espresso shots or two 8 oz cups of drip coffee. It is well within the FDA’s daily limit of 400 mg for healthy adults and is the recommended maximum for pregnant women.
Three shots of espresso contain approximately 189 mg of caffeine on average (63 mg per shot). This is about 47% of the FDA’s recommended daily limit of 400 mg. At Starbucks specifically, three shots would deliver about 225 mg.
Per ounce, yes. Espresso has about 63 mg of caffeine per ounce compared to about 12 mg per ounce for drip coffee. But per serving, a typical cup of drip coffee (8 to 16 oz) delivers more total caffeine than a single or even double espresso shot.
Explore more in our coffee drink guides, or read about 26 types of coffee drinks explained.
Hey there! I’m Austin and I love coffee. In fact, I drink about 5 americanos a day. I started BrewingCoffees because I wanted to share my love of coffee with the world. Before starting BrewingCoffees, I worked as a Barista for 7 years.
Leave a Reply