Quick answer: Yes — matcha contains caffeine, roughly 60–70 mg per standard 2 g serve (about 1 teaspoon), or 30–35 mg per gm of powder. That puts one bowl of matcha at about half the caffeine of a drip coffee and a touch above a single espresso shot's effect spread over a longer curve. The reason matcha feels so different from coffee is L-theanine, an amino acid concentrated by shade-growing, which research shows smooths caffeine's absorption into steady, calm alertness rather than a spike and crash. The exact amount in your cup depends entirely on how much powder you use — so here's the full breakdown by teaspoon and by gm.
| Amount of matcha | Approx. weight | Caffeine | Roughly equal to |
|---|---|---|---|
| ½ teaspoon | 1g | 30–35 mg | A cup of steeped green tea |
| 1 teaspoon (standard serve) | 2g | 60–70mg | 1 espresso shot |
| 1½ teaspoons | 3g | 95–105 mg | 1 drip coffee |
| 2 teaspoons | 4g | 125–140 mg | 1 large flat white |
| 1 tablespoon | 6g | 190–210mg | 2 drip coffees |
| Per gram of powder | 1g | ~32mg | — |
| 7g (a very strong latte) | 7g | 220–245mg | Approaching half the daily adult limit |
| 8g | 8g | 250–280mg | — |
Based on iki Matcha ceremonial grade at approximately 34 mg of caffeine per gram. Caffeine varies by harvest and grade — first-harvest ceremonial matcha typically contains more caffeine than culinary grade.
Does matcha have caffeine?
Yes, matcha contains caffeine. A standard serving of 2g (one teaspoon) of matcha powder
contains approximately 64–70mg of caffeine, according to USDA FoodData Central data.
This is more than a bag of green tea (~25–30mg) but less than a shot of espresso (~75mg) or a cup of brewed coffee (~95–140mg).
What makes matcha caffeine feel different is L-theanine, an amino acid found almost
exclusively in tea plants. L-theanine slows caffeine absorption and promotes alpha brain
wave activity, producing calm, sustained focus without the jitteriness or crash associated
with coffee.
Iced matcha contains the same caffeine as hot matcha; the temperature of preparation does not affect caffeine content. A matcha latte with 2g of powder also contains ~64–70mg, regardless of the milk added.
For most adults, up to 400mg of caffeine daily is considered safe (FDA guideline), meaning
3–5 standard matcha servings fall within safe limits.
📋 Key Facts: Matcha Caffeine at a Glance
- A standard 1-tsp (2 g) serving of matcha contains 64–70 mg of caffeine
- Matcha has more caffeine per gram than brewed green tea, you consume the whole leaf, not just an extract
- Caffeine in matcha is paired with L-theanine, an amino acid that smooths the stimulant effect and reduces jitteriness
- Ceremonial grade matcha has slightly more caffeine, and considerably more L-theanine than culinary grade
- A matcha latte and iced matcha contain the same caffeine as regular matcha; only the powder amount matters
- The FDA recommends no more than 400 mg of caffeine per day for healthy adults; that's around 5–6 matcha servings
How Much Caffeine Is in Matcha Per Gram and Per Serving?
Matcha powder contains approximately 19–44 mg of caffeine per gram, depending on the grade and growing conditions. In practical terms, one level teaspoon (2 g) delivers 64–70 mg. Use two teaspoons and you're looking at 128–140 mg, comparable to a large brewed coffee.
The reason matcha has more caffeine per gram than regular green tea is simple: you're consuming the entire leaf. With brewed green tea, you steep leaves in water, extract a portion of their compounds, then discard the leaves. With matcha, the leaves are ground to a fine powder and fully suspended in the liquid. Nothing is thrown away, including the caffeine.
Here's how matcha caffeine content compares across common drinks:
| Drink | Serving Size | Caffeine (mg) | L-Theanine |
|---|---|---|---|
| Brewed Coffee | 240 ml (8 oz) | 95–100 mg | Negligible |
| Matcha (1 tsp / 2 g) | 150 ml (5 oz) | 64–70 mg ✦ | High (~30 mg) |
| Espresso | 30 ml (1 shot) | 63 mg | Negligible |
| Black Tea | 240 ml (8 oz) | 47 mg | Low |
| Green Tea (brewed) | 240 ml (8 oz) | 28–30 mg | Moderate |
✦ Matcha range. Sources: USDA FoodData Central; FDA caffeine guidance; Journal of Analytical Toxicology (2021); Kochman et al., Nutrients (2021).
Caffeine Per Standard Serving — Visual Comparison
Why Matcha Caffeine Feels Different — The L-Theanine Mechanism
This is where matcha actually gets interesting.
Regular coffee gives you a spike. You know the pattern: sharp alertness, sometimes a tight chest, and then a drop somewhere around mid-afternoon. Matcha doesn't work like that for most people, and it's not just a matter of lower caffeine. The difference is L-theanine, an amino acid found in high concentrations in shade-grown tea leaves.
L-theanine promotes alpha-wave brain activity, the kind associated with calm, focused attention. Caffeine increases alertness and speeds reaction time. Together, the two interact in a way neither manages alone. A 2008 double-blind trial published in Nutritional Neuroscience found that the caffeine–L-theanine combination improved sustained attention and accuracy on cognitive tasks more than either compound taken separately.
Matcha contains significantly more L-theanine than ordinary green tea. Shade-growing the plants, typically 3–4 weeks before harvest, blocks photosynthesis, causing the leaves to hold onto L-theanine rather than converting it to catechins. The typical L-theanine-to-caffeine ratio in quality ceremonial matcha runs around 1:1 to 2:1. Coffee has essentially zero L-theanine. That's a real difference, not a marketing claim.
The practical result: clean energy without the crash. The caffeine onset is slower, the effect lasts longer, and there's no hard comedown. Most regular matcha drinkers also notice it doesn't trigger the cortisol spike that coffee can cause first thing in the morning.
For a broader look at what's happening in your body, our article on matcha's caffeine explained covers the full picture.
Does Iced Matcha Have Caffeine? What About a Matcha Latte?
Two of the most-searched questions about matcha, and both have the same short answer: yes.
Iced matcha caffeine: Exactly the same as hot matcha. Temperature has no meaningful effect on caffeine content. The caffeine is in the powder, it doesn't need heat to become active. Whether you whisk matcha into hot water first and pour it over ice, or shake it cold from the start, you're getting about 64–70 mg per teaspoon. Is matcha caffeinated when served cold? Every bit as much as hot.
Does a matcha latte have caffeine: Yes. Milk, oat milk, almond milk, none of these add caffeine. What does change with a latte is the rate of absorption. Fat in milk slightly slows how quickly caffeine enters your bloodstream, so a matcha latte can feel marginally gentler than straight matcha tea. But the total caffeine you're consuming? Set entirely by the powder.
If this is your first time with matcha and you're wondering what to expect, our beginner's guide including what does matcha have caffeine mean for your routine — walks through the basics.
How Matcha Grade Affects Caffeine — Ceremonial vs Culinary
Both ceremonial and culinary grade matcha are caffeinated. But they're not the same drink in terms of what you actually experience.
Ceremonial grade comes from the first harvest of tencha leaves, shade-grown, hand-picked, and stone-ground. The shading process drives up L-theanine and chlorophyll, giving ceremonial matcha its vivid green colour and naturally sweet, umami-rich flavour. Caffeine content runs around 34–44 mg per gram. Culinary grade, made from later-harvest leaves, contains around 19–30 mg per gram, and considerably less L-theanine.
The bigger difference isn't the raw caffeine number. It's the L-theanine. Ceremonial grade delivers a noticeably smoother energy experience at the same serving size, more focused and less stimulating, because the L-theanine is doing more modulating work.
Culinary grade is fine for smoothies, baking, or lattes where strong flavour isn't the point. For drinking straight — or if you want the cleanest caffeine experience, ceremonial grade is worth it. Our Premium Ceremonial Matcha is first-harvest, shade-grown, and stone-ground in Japan. The L-theanine content is where it should be.
How Much Matcha Caffeine Is Safe Per Day?
The FDA recommends no more than 400 mg of caffeine per day for healthy adults. At 64–70 mg per teaspoon, that's room for 5–6 matcha servings before hitting the ceiling. Most regular drinkers are comfortable at 2–3 per day.
A few practical things to keep in mind:
- Timing: Caffeine has a half-life of roughly 5–6 hours in most people. A matcha at 3 pm means half the caffeine is still circulating by 8–9 pm. Morning or early afternoon works best.
- Caffeine sensitivity: Matcha is gentler than coffee for most people, but if you're sensitive, start with half a teaspoon and see how you feel.
- Stacking: If you're also drinking coffee or other caffeinated drinks, count all sources together against that 400 mg daily ceiling.
For a detailed breakdown, including serving recommendations by health goal and time of day, read our guide on how much matcha you should drink in a day.
Is Matcha Safe During Pregnancy?
One matcha serving (64–70 mg of caffeine) falls below the 200 mg daily limit recommended by the NHS, WHO, and most health authorities during pregnancy. Two servings brings you to 128–140 mg, still within range if you're not consuming other caffeinated drinks.
That said: this is general information, not medical advice. If you're pregnant, talk to your doctor or midwife before making any changes to your caffeine intake. They'll take your individual situation into account, which matters more than a general guideline.
Experience Matcha's Calm, Focused Energy
Our Premium Ceremonial Matcha is first-harvest, shade-grown, and stone-ground in Japan — high in L-theanine, smooth on caffeine, and nothing like what you get from culinary powder.
Shop Ceremonial Matcha Powder →
The Bottom Line
Matcha is caffeinated, around 64–70 mg per teaspoon, which is more than espresso and less than a regular coffee. Whether you're drinking it hot, iced, or as a latte, the caffeine content stays the same. It's determined by how much powder you use, not how you prepare it.
What makes matcha worth talking about isn't just the caffeine number. It's the combination with L-theanine that makes the energy feel genuinely different — focused and calm rather than wired. That's not something coffee delivers, and it's not a small thing.
If you're looking at the numbers and wondering which grade to start with, our article on does matcha have caffeine — a beginner's guide explains what to expect from your first few weeks. And if you've already made up your mind, the ceremonial matcha is the place to start.
