Does Matcha Have Caffeine? Per Gram, Per Cup, and vs Coffee
Roon Team
Does Matcha Have Caffeine? Per Gram, Per Cup, and vs Coffee
Yes, matcha has caffeine. Every gram of matcha powder contains roughly 19 to 44 mg of caffeine, depending on grade, origin, and harvest. A standard one-teaspoon serving (about 2 g) delivers approximately 38 to 88 mg, putting a typical cup in the same neighborhood as a small drip coffee. The "gentler than coffee" reputation is real, but it comes from matcha's chemistry, not from low caffeine.
Below: caffeine per gram, per serving style, per Starbucks size, and against six common benchmarks.
The Full Matcha Caffeine Table
Matcha's caffeine varies more than most people expect. Grade, growing conditions, and how much powder you use all shift the number. Here is what the data looks like across formats.
| Format | Powder (g) | Estimated Caffeine (mg) | Notes |
|---|---|---|---|
| Per gram, matcha powder | 1 | 19 to 44 | Range across grades; not a single lab figure |
| Usucha (thin tea, typical home serving) | 1 to 2 | 19 to 88 | Most common preparation |
| Standard 1 tsp serving | ~2 | 38 to 88 | Mid-range estimate |
| Koicha (thick tea, ceremonial) | 3 to 4 | 57 to 176 | Double-strength preparation |
| Starbucks Matcha Latte, Tall (12 oz) | ~2 scoops | ~40 | Tasting Table reports ~40 mg for a Tall |
| Starbucks Matcha Latte, Grande (16 oz) | ~3 scoops | ~65 to 80 | Most-ordered size; range reflects sourcing variability |
| Starbucks Matcha Latte, Venti (24 oz) | ~4 scoops | ~80 to 85 | Tasting Table reports ~85 mg |
A note on precision: The 19 to 44 mg/g range appears across multiple nutrition sources, but no single peer-reviewed paper pins it to one number. Matcha is a natural product. Treat these figures as reliable estimates, not lab-certified doses.
How Matcha Compares to Coffee, Tea, Cola, and an 80 mg Pouch
Matcha's typical serving stacked against six beverages you probably already know:
| Beverage / Format | Serving Size | Caffeine (mg) | Source |
|---|---|---|---|
| Matcha (1 tsp, ~2 g) | 8 oz prepared | ~38 to 88 | Calculated from 19-44 mg/g range |
| Drip coffee | 8 oz | ~96 | Mayo Clinic |
| Espresso (single shot) | 1 oz | ~63 | Mayo Clinic; see also espresso's own caffeine range |
| Black tea, brewed | 8 oz | ~47 | Mayo Clinic |
| Green tea, brewed | 8 oz | ~28 | USDA-derived |
| Cola (Coca-Cola) | 12 oz | ~34 | Coca-Cola product label |
| Roon pouch | 1 pouch | 80 | Roon (plus 60 mg L-theanine, 25 mg Dynamine, 5 mg TeaCrine) |
A typical matcha serving lands between green tea and drip coffee. Use more powder and you approach coffee territory. Use less and you are closer to green tea. For a deeper comparison, see the full coffee vs matcha comparison or the head-to-head caffeine breakdown.
Why Matcha Feels Different Than Its Caffeine Number Suggests
Two cups can carry the same milligrams and feel nothing alike. Matcha's smoothness comes from L-theanine, an amino acid concentrated in shade-grown tea leaves. A 2022 study in IJMS confirmed that shading increases both theanine and caffeine in the tea plant while decreasing certain catechins.
L-theanine promotes alpha-wave brain activity, associated with relaxed concentration. Because you consume the entire powdered leaf (rather than steeping and discarding), matcha's L-theanine-to-caffeine ratio is higher than brewed green tea's. That is why 70 mg from matcha can feel gentler than 70 mg from coffee. For more on the mechanism, see why matcha's L-theanine changes the feel.
Is Matcha Caffeine Free?
No. Matcha is made from the same Camellia sinensis plant that produces all true teas, and shade-growing actually raises its caffeine relative to sun-grown green tea. Even a light half-teaspoon contains roughly 19 to 44 mg. If you need zero caffeine, look to herbal infusions like rooibos or chamomile, which come from entirely different plants.
Does Starbucks Matcha Have Caffeine? By Size
Yes, and the amount scales with size. A Tall Matcha Tea Latte uses about 2 scoops of matcha powder and delivers roughly 40 mg of caffeine. Third-party trackers place the Grande at around 65 to 80 mg and the Venti at 80 to 85 mg.
For comparison, a Grande Caffè Latte (espresso-based) contains about 150 mg, roughly double the matcha version. Starbucks uses a pre-sweetened matcha blend (matcha powder mixed with sugar), so caffeine per scoop is diluted compared to pure powder. That is one reason Starbucks numbers sit toward the lower end of the per-gram range.
Will Matcha Keep You Awake?
It can. Any drink containing 38 to 88 mg of caffeine has the potential to affect your sleep, and the FDA notes that caffeine's half-life in the body averages roughly 5 hours. Drink a matcha at 4 PM and a meaningful fraction of that caffeine is still circulating at 9 PM.
Matcha's L-theanine may soften the subjective "wired" feeling, but the caffeine is still there. If you are sensitive to caffeine or trying to protect sleep quality, treat matcha like coffee: stop at least 6 to 8 hours before bed.
Ceremonial vs Culinary Grade: Does Caffeine Differ?
Slightly, but less than marketing implies. Ceremonial-grade matcha comes from the youngest, most shaded first-harvest leaves, which tend toward higher caffeine and L-theanine per gram. Culinary-grade uses older leaves or later harvests and falls toward the lower end of the 19 to 44 mg/g range.
The practical gap in a single cup is maybe 10 to 20 mg. You will notice the taste difference (ceremonial is smoother, less bitter) and color difference (more vivid green) long before you notice the caffeine difference. The powder-to-water ratio matters far more than the grade label.
The Number You Actually Need
Matcha has caffeine, always. A typical cup delivers 38 to 88 mg, depending on how much powder you use and what grade you buy. That is less than drip coffee, more than brewed green tea, and well within the FDA's 400 mg daily guideline for healthy adults. The "gentler" reputation is earned by L-theanine, not by low milligrams. Know your dose, time it well, and matcha fits comfortably into a caffeine budget.
Pregnant or breastfeeding individuals, children, and anyone on medication that interacts with caffeine should talk to a clinician before relying on general thresholds.
Frequently Asked Questions
How much caffeine is in one teaspoon of matcha?
One level teaspoon is roughly 2 grams. At 19 to 44 mg per gram, that yields approximately 38 to 88 mg of caffeine. The exact amount depends on grade and how tightly you pack the spoon.
Is matcha stronger than coffee?
Per gram of dry product, yes. Matcha has 19 to 44 mg/g versus coffee's roughly 10 to 12 mg/g. But per prepared cup, drip coffee (~96 mg per 8 oz) usually wins because you use far more grounds per cup than matcha powder. For the full breakdown, see matcha vs coffee, mg by mg.
Does matcha have more caffeine than green tea?
Yes, substantially. An 8 oz cup of brewed green tea contains about 28 mg of caffeine. A standard matcha serving (2 g in 8 oz of water) contains roughly 38 to 88 mg, because you consume the whole leaf rather than steeping and discarding it.
How much caffeine is in a Starbucks Matcha Latte?
A Tall (12 oz) has approximately 40 mg, a Grande (16 oz) roughly 65 to 80 mg, and a Venti (24 oz) about 80 to 85 mg. These are estimates; Starbucks uses a pre-sweetened matcha blend, and exact caffeine varies with batch and measurement.
Can I drink matcha at night?
You can, but caffeine's average half-life of about 5 hours means a meaningful amount will still be active hours later. If sleep quality matters to you, stop consuming matcha at least 6 to 8 hours before your target bedtime, the same rule that applies to coffee.
Is there a caffeine-free version of matcha?
No true matcha is caffeine free. Some brands sell "decaffeinated matcha," but decaffeination strips catechins and L-theanine along with the caffeine, removing much of what makes matcha distinctive.
Does water temperature change matcha's caffeine?
Not meaningfully. Matcha is a powder that fully suspends in water, so you consume the entire leaf regardless of temperature. Unlike steeped tea, where hotter water pulls more caffeine from the leaf, matcha delivers its full dose whether hot or iced.
Is matcha safe during pregnancy?
Talk to your clinician. General caffeine guidance for pregnancy is typically well below the 400 mg adult ceiling, and individual tolerance varies. A doctor or midwife can give you a personalized recommendation based on your health history.
Where Caffeine Meets L-Theanine, Without the Kettle
Matcha's appeal is the pairing: caffeine for alertness, L-theanine for smoothness. If that combination sounds right but the variability, prep time, or sugar in a Starbucks matcha latte does not, Roon was built around the same principle in a more controlled format.
Each Roon pouch delivers a fixed 80 mg of caffeine and 60 mg of L-theanine, plus 25 mg of methylliberine (Dynamine) and 5 mg of theacrine (TeaCrine). Methylliberine slows caffeine clearance: a randomized, double-blind PK study found it cut caffeine's oral clearance roughly in half and extended its half-life, though that study used 100 mg methylliberine + 150 mg caffeine (about 4x and 1.9x Roon's doses), so the magnitude at Roon's lower dose is directionally similar, not identical. The felt window is 6 to 8 hours. A longer half-life also means stopping at least 8 hours before bed.
Roon is a zero-sugar, zero-nicotine oral pouch, not a tea replacement. It does not contain the catechins or EGCG that make matcha interesting as a whole food. What it offers is a precise, consistent caffeine-plus-L-theanine dose with no brewing and no variation. Tins start at $9.16 for a 12-tin subscription (as little as $0.61 per pouch) or $15.00 per tin for a one-time 4-tin order.
Related from Roon
- The Full Coffee vs Matcha Comparison
- Head-to-Head Caffeine Breakdown: Matcha vs Coffee
- Why Matcha's L-Theanine Changes the Feel
- How Much Caffeine in a Shot of Espresso?
Written by Roon Team
