Which Coffee Drink Has the Most Caffeine? Drinks Compared

Short answer: It depends on how you measure. Ounce for ounce, espresso has the most caffeine of any common coffee drink, at roughly 64 mg in a 1 fl oz shot. Cup for cup, a large cold brew or a large drip coffee usually wins, because you drink far more of it. Lattes and cappuccinos get all their caffeine from their espresso shots.

Sources: IFIC caffeine calculator (citing USDA FoodData Central), FDA, caffcalc.com, Coffee Craft Guide, CoffeeLog, ProCoffeeGear and My Caffeine Calculator. Per-ounce figures are our math from the serving figures. All are typical values, not lab results.

Which coffee drink has the most caffeine per ounce?

Espresso has the most caffeine per ounce. A single 1 fl oz shot carries about 63.6 mg, according to IFIC's figures from USDA data. Drip coffee has about 12 mg per ounce.

By weight the gap is the same. USDA lists espresso at 212 mg per 100 g and drip at 40 mg per 100 g, as reported by caffcalc.com. That makes espresso more than five times as concentrated.

Espresso gets there because hot water is forced through finely ground coffee under pressure. The result is a small, thick drink with a lot of coffee packed into very little water.

Which coffee drink has the most caffeine per serving?

A large cold brew or a large drip coffee usually has the most caffeine per serving. The reason is size, not strength. You drink 12 or 16 ounces of it instead of one.

The FDA puts a 12 fl oz cup of regular brewed coffee at 113 to 247 mg. Typical ranges for 12 fl oz of cold brew run about 150 to 250 mg, per My Caffeine Calculator. A single espresso shot, at about 64 mg, falls well short of both.

That surprises a lot of people. A single shot has less caffeine than an 8 oz cup of drip, which is about 95 mg. It takes a double shot, about 126 mg, to pass it, as caffcalc.com points out. For more on how cup size changes the number, see our chart of caffeine in a cup of coffee by size.

What is the strongest coffee drink?

If "strongest" means the most caffeine per sip, it is espresso. If it means the most caffeine in the cup you are holding, it is usually a big cold brew or drip.

Taste is a third meaning. A dark roast can taste strong and bold without having more caffeine. In brewing, "strength" really means how much coffee you use for the amount of water. More grounds per cup makes a stronger brew in both flavor and caffeine.

We rank brew methods and grocery brands in our guide to the strongest coffee, so we will keep this short here.

Which concentrate has the best caffeine-to-volume ratio?

Among common coffee drinks, espresso has the best caffeine-to-volume ratio. At about 212 mg per 100 g against 40 mg for drip, per caffcalc.com, no everyday cup comes close.

Cold brew concentrate can be strong too. Concentrate is cold brew made with extra coffee, meant to be diluted with water or milk before drinking. One site lists it at 200 mg per 60 ml, or roughly 333 mg per 100 ml by our math, per Coffee Craft Guide. That is a single source, and concentrates vary a lot by recipe, so treat it as a rough guide. Once you dilute it, the caffeine per ounce drops to regular cold brew levels.

Latte or cappuccino: which has more caffeine?

A latte and a cappuccino have the same caffeine when they have the same number of shots. Milk and foam add no caffeine, so the shots decide everything.

A latte is espresso with lots of steamed milk and a thin layer of foam. A cappuccino is espresso with less milk and more foam. Both are typically made with one or two shots, according to the Center for Science in the Public Interest, which notes that at one large chain the smaller sizes use one shot and the larger sizes use two.

So a one-shot latte and a one-shot cappuccino both land around 63 mg. A bigger latte only has more caffeine if it has more shots. If you want more, ask for an extra shot, not a bigger cup.

Cold brew or shaken espresso: which has more caffeine?

It depends on the shot count. A shaken espresso is espresso shaken with ice and usually a little sweetener, then topped with milk. Its caffeine comes only from the shots.

At one major coffee chain, a 16 fl oz shaken espresso with three shots is reported at about 225 mg, slightly above the same size of cold brew at about 205 mg, per caffcalc.com and Tasting Table. Those are one chain's approximate numbers, not a standard.

At home, the math is simple. Each shot adds about 63 mg. A two-shot shaken espresso will have less caffeine than a 12 oz cold brew, and a three- or four-shot version can pass it.

Which iced coffee has the most caffeine?

Among iced drinks, cold brew or a shaken espresso with three or more shots usually has the most caffeine. Classic iced coffee, which is coffee brewed hot and poured over ice, tends to come in lower.

We found no neutral, brand-independent figure for iced coffee. It starts as regular brewed coffee, then melting ice thins it out. At the same chain mentioned above, a 16 oz iced coffee is reported at roughly 165 to 185 mg, below its cold brew, per Tasting Table.

To keep homemade iced coffee from tasting weak, brew it stronger than usual. A good rule is to use the normal amount of coffee with about half the hot water, then pour it straight over a full glass of ice.

How to make a higher-caffeine cup at home

The easiest way to get more caffeine is to use more coffee, not a different drink. Here is how we would do it.

1. Weigh your coffee. Start at 1 gram of coffee for every 15 grams of water, then move toward 1 to 14 for a stronger cup.
2. Use water at 195 to 205°F (90 to 96°C) for hot brewing, so the grounds extract fully.
3. Match the grind to the method: fine for espresso, medium for drip, coarse for cold brew and French press. Our grind size chart shows each one.
4. For cold brew, steep coarse grounds in cold water for 12 to 18 hours, then strain.
5. For espresso drinks, add a shot rather than going up a cup size.

How much caffeine is too much?

For most healthy adults, the FDA says 400 mg a day is not generally linked to negative effects. That is about two to three 12 oz cups of brewed coffee. The FDA also notes that caffeine varies with how coffee is grown, processed and prepared, and that people differ in how sensitive they are.

A very large cold brew plus an afternoon double shot can add up fast. We cover limits and side effects in how much coffee is too much.

Where our coffee fits

Whatever drink you make, the beans set the flavor. Kirenge Gold is 100% Kenyan Arabica from one family farm, Kirenge Farm in Kiambu County, where our family has grown coffee since the 1950s. The cherries are hand-picked at 1,500 to 1,800 meters on red volcanic soil.

Our coffee is low acid and makes a smooth cup. The light and medium roasts bring bright, fruity flavor, and the dark roast brings dark chocolate for a bold espresso or cold brew. Caffeine is in the normal range for 100% arabica coffee, as we explain in our Kenyan coffee caffeine guide. We roast in small batches every week in Atlanta and ship within 48 hours.

Brew your favorite drink with fresh Kenyan coffee

Pick light, medium or dark roast of our 100% Arabica, single-origin coffee from Kirenge Farm, low acid and smooth, roasted fresh every week in Atlanta and shipped within 48 hours. Shop our Kenyan coffee in whole bean, ground or pods, with free shipping on orders over $55.

Frequently asked questions

Does a double shot have twice the caffeine of a single?

Roughly, yes. A double is about 126 mg against about 63 mg for a single, because it uses about twice the coffee.

Does adding milk lower the caffeine?

No. Milk dilutes the flavor and lowers caffeine per ounce, but the total caffeine in the cup stays the same.

Is an americano stronger than drip coffee?

An 8 oz americano with two shots has about 125 mg, a bit more than 8 oz of drip at about 96 mg. A one-shot americano has less.

Which roast should I use for cold brew?

Any roast works. Medium and dark roasts give a chocolatey, mellow cold brew, while a light roast gives a brighter, fruitier one.

Can I make espresso drinks with pre-ground coffee?

Yes, if it is ground fine for espresso. For the freshest shot, grind whole beans right before brewing and store them as shown in our guide to storing coffee beans.