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A latte carries 63mg of caffeine per espresso shot, so the standard double-shot latte lands at 126mg, a single at 63mg, and a triple at 189mg, using USDA's figure of 63mg per 1oz shot. The milk contributes nothing. That means the size of the cup barely matters: a 16oz latte and a 12oz latte with the same two shots have the same caffeine, just different amounts of milk. For a chain reference point, Starbucks lists its grande iced latte at 150mg.
Caffeine by shot count
| Latte build | Espresso | Caffeine |
|---|---|---|
| Single-shot latte | 1 x 1oz shot | 63mg (USDA) |
| Double-shot latte (the default at most shops) | 2 x 1oz shots | 126mg |
| Triple-shot latte | 3 x 1oz shots | 189mg |
| Starbucks grande iced latte | Starbucks shots | 150mg (published menu value) |
| 8oz brewed coffee, for scale | none | 95mg (USDA) |
Chains pull their own shot volumes, so published menu numbers run above the USDA per-shot baseline. The FDA considers up to 400mg per day generally safe for healthy adults.
Why the milk is a decoy
People assume a bigger, milkier latte means more caffeine, and shops quietly encourage that by charging more for larger sizes. But upsizing usually adds milk, not shots. If a cafe builds every size on two shots, the venti-sized latte is just a double shot swimming in more steamed milk. When you want more caffeine, order more shots, not more ounces. When you want less, ask for a single: most shops will pull it, and the drink tastes nearly identical because milk dominates the flavor anyway.
Latte vs a plain cup of coffee
A double latte at 126mg beats one 8oz cup of brewed coffee at 95mg, but a 12oz or 16oz brewed coffee overtakes it fast because drip caffeine scales with volume while latte caffeine scales with shots. If you drink lattes for the caffeine, you are paying milk prices for espresso dosing. The full drink-by-drink picture is in the caffeine database, and you can line drinks up head to head with the caffeine comparison tool.
Making a latte at home
The caffeine math is identical at home: your shot count sets the dose, your milk sets the texture. A basic espresso machine and a milk frother cover the whole drink, and pulling your own shots means you always know exactly how many are in the cup, which no chain receipt tells you.
Related reading
FAQ
How much caffeine is in a latte? 63mg per espresso shot (USDA), so the standard double-shot latte has 126mg. Milk adds nothing. Starbucks lists its grande iced latte at 150mg.
Does a bigger latte have more caffeine? Usually not. Larger sizes typically add milk, not shots, so a 16oz latte built on two shots has the same 126mg as a 12oz double.
Does a latte have more caffeine than regular coffee? A double latte at 126mg beats one 8oz brewed cup at 95mg, but larger brewed sizes overtake it because drip caffeine scales with volume.
Sources: USDA FoodData Central (espresso, brewed coffee); Starbucks published menu caffeine values; FDA guidance on caffeine. This page is information, not medical advice.
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