How Much Caffeine Is in a Latte? (Starbucks, Homemade & More)

A standard double-shot latte contains approximately 128–150mg of caffeine. The exact number depends on how many espresso shots are in the drink, which varies by size and coffee shop. Here’s the complete breakdown.

Caffeine in a Latte by Size (Starbucks)

At Starbucks, each espresso shot contains approximately 75mg of caffeine. Standard shot counts by size:

Important note: A Tall and a Grande Starbucks latte have the same 2 shots for iced versions (Grande gets 2, Tall sometimes gets 1 depending on drink type). Always ask if you want to be sure. For iced drinks specifically, the Venti gets an extra shot over the hot Venti — so iced Venti lattes have meaningfully more caffeine than hot Venties of the same size.

Caffeine in a Generic Latte (Not Starbucks)

The average espresso shot at a standard coffee shop contains approximately 63–75mg of caffeine. So for a generic double-shot latte:

• 1 shot latte: ~63–75mg caffeine
• 2 shot latte: ~126–150mg caffeine
• 3 shot latte: ~189–225mg caffeine

The FDA recommends a maximum of 400mg of caffeine per day for healthy adults. That means you can safely drink 2–3 standard Grande lattes (2 shots each) per day without approaching the limit.

Caffeine in Different Types of Lattes

The matcha and chai difference: These popular “latte” options at Starbucks don’t contain espresso. A matcha latte’s caffeine comes from matcha powder (~80mg Grande), and a chai latte’s caffeine comes from black tea (~70mg Grande). If you’re tracking caffeine carefully, these are significantly lower than espresso-based lattes.

How Latte Caffeine Compares to Other Drinks

Despite being made with espresso — which is extremely concentrated — a latte actually has less caffeine than a similar-sized drip coffee. This is because a latte uses only 1–2 oz of espresso in 16 oz of total drink, while drip coffee is uniformly caffeinated throughout. More total coffee → more total caffeine.

How to Customize Caffeine in Your Latte

You have full control over caffeine when ordering a latte:

• Add a shot: One extra espresso shot adds ~75mg caffeine and only 5 calories — the most efficient caffeine boost available
• Half-caff: Ask for one regular shot and one decaf shot in a Tall, or two regular and two decaf in a Grande — cuts caffeine by approximately 50%
• Decaf: Asks for all shots to be decaf — reduces caffeine to approximately 15–30mg total (not zero, because decaf espresso still contains trace caffeine)
• Size down for less caffeine: A Tall hot latte has only 1 shot (~75mg) versus Grande’s 2 shots (~150mg)

Does Milk Affect Caffeine in a Latte?

The type of milk (dairy or non-dairy) does not change the caffeine content of your latte. Milk dilutes the espresso and affects how quickly you absorb caffeine — fats and proteins slow absorption — but the total milligrams of caffeine remain the same regardless of milk choice. Choosing almond milk instead of 2% milk saves calories but doesn’t reduce caffeine.

Frequently Asked Questions

Is a latte stronger than regular coffee?

No — regular brewed coffee typically has more caffeine than a latte of the same size. A 16oz drip coffee contains 200–300mg caffeine, while a 16oz Grande latte has ~150mg. Espresso is more concentrated per ounce, but a latte contains only 2 oz of espresso in 16 oz total — most of which is milk.

How long does caffeine from a latte last?

Caffeine from a latte is absorbed more slowly than caffeine from black coffee or espresso because the milk fats and proteins slow gastric emptying. Effects typically peak 30–90 minutes after consumption and have a half-life of approximately 5–6 hours for most adults — meaning half the caffeine is still in your system 5–6 hours after drinking.

Can a latte keep you awake?

Yes. A Grande latte contains 150mg of caffeine — enough to cause alertness and potentially disrupt sleep if consumed in the afternoon or evening. General guidance is to avoid caffeine after 2–3pm if you have trouble sleeping, as residual caffeine can still be active in your system at bedtime.