Reference
Almost every figure published for matcha caffeine is quoted per cup, which is close to useless, because nobody agrees what a cup is. The honest unit is milligrams per gram of powder, and there the published laboratory range is wide: roughly 19 to 44mg of caffeine per gram. Everything else follows from how many grams you actually used.
The short answer. Matcha carries roughly 19 to 44mg of caffeine per gram of powder in published analyses. A standard 2g bowl therefore lands somewhere around 38 to 88mg, with most everyday matcha in the middle of that band. A 240ml cup of drip coffee sits near 95mg. So a typical bowl of matcha is a little under a cup of coffee, not a fraction of it and not more than it.
A factor of more than two between the bottom and top of the range is not measurement sloppiness. It reflects real differences in the powder:
We have not run our own laboratory panel, so the range above is what published analyses report, and we are stating it as a range on purpose. A single confident number would be more satisfying to read and less true.
| Preparation | Matcha used | Approximate caffeine |
|---|---|---|
| Light bowl of usucha | 1g | 19 to 44mg |
| Standard bowl of usucha | 2g | 38 to 88mg |
| Cafe matcha latte, small | 2g | 38 to 88mg |
| Cafe matcha latte, large | 3g | 57 to 132mg |
| Koicha, thick preparation | 4g | 76 to 176mg |
Milk changes nothing. Caffeine comes from the powder, so a latte and a plain bowl made with the same scoop carry the same dose. The only reason a latte often feels milder is that it is diluted across more liquid and drunk more slowly.
| Drink | Serving | Approximate caffeine |
|---|---|---|
| Drip coffee | 240ml | Around 95mg |
| Espresso | 30ml single | Around 63mg |
| Matcha, 2g bowl | 60 to 70ml | 38 to 88mg |
| Black tea, brewed | 240ml | Around 47mg |
| Steeped green tea | 240ml | Around 28mg |
| Hojicha | 240ml | Around 7 to 20mg |
Note the gap between matcha and ordinary steeped green tea. With matcha you drink the whole leaf, so you get everything in it. With steeped tea you drink an extraction and throw the leaf away. That difference, not any special property of the plant, is why matcha is the more caffeinated drink.
Matcha contains L-theanine, an amino acid concentrated by shading, and it is frequently credited with producing a calmer, longer alertness than coffee. The mechanism is plausible and there is human research on L-theanine and on caffeine plus L-theanine combinations. What is not established is that a normal bowl of matcha reliably produces a distinct, measurable state that a cup of coffee does not. Many people report it, we report it ourselves, and self-report at that level is weak evidence.
We are explicit about this because this site previously published an L-theanine figure that was wrong by a factor of a thousand and has since corrected it. That is logged on our corrections page. Health claims on this site are graded by evidence strength on the benefits page, and this one is graded as plausible but not established.
General guidance for healthy adults puts a moderate daily intake at up to about 400mg of caffeine, which is four to ten 2g bowls depending where in the range your powder falls. Pregnancy guidance is substantially lower, commonly around 200mg, and that is a conversation for a doctor rather than a tea site.
FAQ
Published analyses put matcha at roughly 19 to 44mg of caffeine per gram of powder. A standard 2g bowl therefore lands around 38 to 88mg, with most everyday matcha in the middle of that band. Anyone quoting a single precise number per cup is not accounting for dose, cultivar, harvest or shading.
Usually less, per serving. A 240ml cup of drip coffee sits near 95mg, while a 2g bowl of matcha lands around 38 to 88mg. A large cafe matcha latte made with 3g can reach or exceed a cup of coffee, so the honest answer depends entirely on the scoop.
No. Caffeine comes from the powder, so the same scoop gives the same dose whether you add milk or not. A latte often feels milder only because it is spread across more liquid and drunk more slowly.
Generally slightly more, because ceremonial grades use younger first-harvest leaf that has spent longer under shade, and both raise caffeine. The difference is small and inconsistent compared with just changing how much powder you use.
Because you consume the entire leaf. Steeped green tea is an extraction and the leaf is discarded, so much of the caffeine stays behind. Matcha is suspended powdered leaf, so you get all of it.
No, and it is worth being careful here. Matcha does contain L-theanine, and the idea that it produces a calmer alertness than coffee is plausible with some supporting research on L-theanine itself. What is not established is that a normal bowl reliably produces a distinct measurable state that coffee does not. We grade this as plausible but unproven on our benefits page.
General guidance for healthy adults is up to about 400mg of caffeine a day, which works out to roughly four to ten 2g bowls depending where your powder falls in the range. Pregnancy guidance is commonly around half that, and is a question for a doctor rather than a tea site.
Health claims about matcha are graded by evidence strength on our benefits page, and anything we have got wrong and fixed is logged on our corrections page. We do not sell matcha and we do not sell rank order, which is explained in our editorial policy.