How Much Caffeine Is In One Scoop Of Starbucks Matcha?

A single scoop of Starbucks matcha powder contains about 20–25 mg of caffeine, based on the official nutrition data for their drinks.

You probably know Starbucks matcha lattes have a distinct, vibrant green color and a mildly sweet, grassy flavor. What’s less obvious is the caffeine content hiding inside that scoop of powder the barista uses. Matcha has a reputation as a gentler energy source than coffee, but the Starbucks version requires a closer look to understand how much you’re actually getting.

A single scoop of Starbucks matcha powder packs roughly 20 to 25 milligrams of caffeine. That might sound modest, but consider that a standard Starbucks matcha latte uses two scoops, plus milk, to reach about 40 to 65 mg depending on size. If you’re customizing your drink or tracking your daily caffeine, knowing the per-scoop number helps you estimate more precisely.

The Short Answer: Caffeine Per Scoop

Starbucks uses a pre-sweetened matcha blend that combines Japanese green tea powder with sugar. The official Starbucks nutrition page for a tall Iced Matcha Latte lists 40 mg of caffeine for the 12-ounce drink. Since the standard recipe calls for two scoops of matcha powder, the math works out to about 20 to 25 mg per scoop.

A grande Iced Matcha Latte bumps that total to 65 mg of caffeine at 16 ounces. Both hot and iced versions show the same caffeine numbers at matching sizes, which confirms the powder itself is the caffeine source — not the milk or the temperature.

How The Estimate Works

Starbucks does not list the per-scoop caffeine figure separately on its nutrition page. The 20–25 mg range is derived by dividing the tall drink’s 40 mg by two scoops. A venti or custom-size drink may use more scoops, so the total can rise accordingly.

Why The Per-Scoop Number Matters

Many people who order Starbucks matcha drinks want to customize their caffeine intake. Maybe you’re asking for an extra scoop for more energy, or requesting less matcha to dial it back. Without a baseline, it’s hard to predict how your custom drink will compare to your usual coffee or tea.

• Customizing your order: An extra scoop adds roughly 20–25 mg of caffeine to your drink total, giving you control over the strength.
• Tracking daily intake: The FDA suggests most adults stay under 400 mg of caffeine per day. A matcha latte with two scoops (40–50 mg) fits comfortably within that range for most people.
• Comparing to other drinks: A grande Starbucks brewed coffee contains about 310 mg of caffeine. A matcha latte with two scoops provides much less by comparison.
• Matching your sensitivity: If you’re sensitive to caffeine, knowing the per-scoop amount helps you request a smaller or lighter matcha drink more confidently.

Whether you’re a regular at Starbucks or just curious about the numbers, the per-scoop estimate turns a vague question into something you can actually use when placing your next order.

How Starbucks Matcha Compares To Coffee

If you’re accustomed to coffee’s caffeine punch, Starbucks matcha will feel noticeably lighter. A grande Iced Matcha Latte with 65 mg of caffeine has about one-fifth the caffeine of a grande brewed coffee, which delivers roughly 310 mg. Even a grande Caffè Americano (about 225 mg) leaves matcha far behind. Tasting Table’s matcha vs coffee caffeine breakdown walks through these differences in detail.

That doesn’t mean matcha is negligible. A tall matcha latte (40 mg) is roughly equivalent to a cup of standard brewed black tea. Two scoops of matcha powder provide about as much caffeine as a can of some sodas. It’s enough to feel alert without the abrupt spike many people associate with coffee.

The caffeine difference also shapes how Starbucks positions these drinks. Coffee is marketed as a morning energizer, while matcha lattes often appeal to people who want a moderate lift with a different flavor profile. Knowing the numbers lets you decide which drink fits your energy needs on any given day.

This table shows the range at a glance. The matcha latte’s caffeine stays consistent whether served hot or iced — the powder is the source, not the preparation method.

How Matcha Grade Changes The Caffeine Level

Not all matcha is created equal when it comes to caffeine. The grade of matcha — ceremonial versus culinary — affects both flavor and stimulant content. Ceremonial grade, traditionally used in Japanese tea ceremonies, is made from the youngest leaves and tends to have a higher price and a more delicate taste.

Some tea companies report that ceremonial grade matcha contains roughly 30 to 70 mg of caffeine per gram of powder, though the exact amount varies by harvest, region, and processing method. Culinary grade, which is designed for mixing into milk or baked goods, generally has less caffeine per gram. Starbucks uses a culinary-grade matcha blend that’s pre-sweetened, which helps explain why the per-scoop estimate (20–25 mg) sits at the lower end of the matcha spectrum.

Culinary grade is purpose-built for lattes, smoothies, and recipes, which matches how Starbucks uses it. If you buy ceremonial grade matcha to make drinks at home, expect a potentially higher caffeine content per gram — and a very different flavor profile entirely.

Why Matcha’s Caffeine May Feel Different

The Role Of L-Theanine

Part of matcha’s appeal is the way its caffeine interacts with your body. Unlike coffee, matcha contains L-theanine, an amino acid that can promote a sense of calm without drowsiness. Some research suggests L-theanine and caffeine together may improve focus and alertness more smoothly than caffeine alone, which is why many people describe matcha energy as sustained rather than jittery.

Per the ceremonial grade matcha caffeine guide, ceremonial grade matcha is particularly rich in both caffeine and L-theanine. This combination may explain the smoother energy effect that matcha drinkers often report. The exact experience varies by individual, but it’s a consistent theme in how people describe matcha compared to coffee.

Starbucks’ culinary-grade blend likely contains less L-theanine than premium ceremonial grades, but the drink still provides a different energy profile than coffee. If you find coffee too intense, a matcha latte with one or two scoops might be a gentler option worth trying.

The Bottom Line

One scoop of Starbucks matcha powder delivers about 20–25 mg of caffeine, making a two-scoop latte a moderate caffeine choice compared to brewed coffee. The exact amount can vary slightly by preparation, but the estimate gives you a solid baseline for customizing your order or tracking your daily intake.

If you’re pregnant, manage a heart condition, or take medications that interact with caffeine, your doctor can help you determine how many scoops of matcha fit safely into your day.