How much caffeine is in a teaspoon of matcha?
A level teaspoon of matcha holds about 2 grams of powder and carries roughly 66 mg of caffeine — close to a single espresso. A scant or loosely filled teaspoon is nearer 1 gram and 33 mg, which is the dose most café lattes actually use. Below: every common measure converted, and the honest ranges behind the averages.
Caffeine by measure
Figures use 33 mg of caffeine per gram — a middle value from published analyses, which span roughly 19–44 mg/g across commercial matcha. Your tin may sit anywhere in that range; the proportions between measures hold regardless.
| Measure | Matcha | Caffeine | For context |
|---|---|---|---|
| ½ teaspoon (scant, sifted) | ~1 g | ~33 mg | The typical café latte dose. Comparable to half an espresso shot. |
| 1 chashaku scoop (heaping) | ~1 g | ~33 mg | The traditional bamboo scoop. Two scoops make a standard bowl. |
| 1 level teaspoon | ~2 g | ~66 mg | A standard usucha bowl or a strong latte. Comparable to a single espresso (~64 mg). |
| 1 heaping teaspoon | ~3 g | ~100 mg | Slightly more than an 8 oz drip coffee (~95 mg). |
| 2 level teaspoons / koicha | ~4 g | ~130 mg | Thick ceremonial matcha, or a double-strength latte. More than most coffees. |
| 1 level tablespoon | ~6 g | ~200 mg | A baking or smoothie quantity — half the FDA's 400 mg daily guideline in one measure. |
Why "a teaspoon" is a slippery measure
The spoon problem
Matcha is a fine, fluffy powder, and how it sits in a spoon changes the dose dramatically. A scant, loosely filled teaspoon of sifted matcha weighs about 1 gram. Levelled off, around 2 grams. Heaping, closer to 3. That's a 3× spread — and a 3× caffeine spread — from the same "1 tsp" in a recipe. When a recipe or café says one teaspoon, it usually means the lighter end (~1 g); when caffeine tables say one teaspoon, they usually mean level (~2 g).
The fix: think in grams
Every reliable matcha dose is a gram figure: 1 g for a light latte, 2 g for a standard bowl of usucha, 4 g for koicha. At 33 mg of caffeine per gram, the math stays honest no matter what spoon you own. A $10 pocket scale — or the traditional chashaku, whose heaping scoop is reliably about 1 g — beats any teaspoon for consistency.
Frequently asked
How much caffeine is in 1 teaspoon of matcha?
A level teaspoon holds about 2 grams of matcha, which carries roughly 66 mg of caffeine — close to a single espresso shot and about two-thirds of an 8 oz drip coffee. A loosely filled or scant teaspoon is closer to 1 gram and 33 mg, which is why café lattes often taste (and feel) lighter than a home bowl.
How much caffeine is in half a teaspoon of matcha?
About 33 mg, from roughly 1 gram of powder. That's the dose many cafés and recipes actually use for a single matcha latte — comparable to a cup of steeped green tea plus a little, or half an espresso.
How much caffeine is in a tablespoon of matcha?
A level tablespoon is about 6 grams of matcha — roughly 200 mg of caffeine. That's a baking or smoothie quantity, not a drinking dose: one tablespoon puts you at half the FDA's 400 mg/day guideline for healthy adults. Recipes using a tablespoon usually serve two or more portions.
How much caffeine is in matcha per gram?
Published analyses of commercial matcha span roughly 19 to 44 mg of caffeine per gram, depending on cultivar, harvest, shading, and grade. We use 33 mg/g as a realistic middle figure across this site. Ceremonial grades made from young shaded leaves tend toward the upper half of the range.
How much caffeine is in 4 grams of matcha?
Around 130 mg at the 33 mg/g average — the classic koicha (thick matcha) dose, and more caffeine than a typical 8 oz drip coffee. The honest range is wide, though: 4 g of a low-caffeine matcha could carry ~80 mg, and 4 g of a strong ceremonial could exceed 170 mg.
How much caffeine is in one chashaku scoop?
A heaping chashaku (the traditional bamboo scoop) holds about 1 gram of matcha — roughly 33 mg of caffeine. Traditional usucha uses two scoops (~2 g, ~66 mg); koicha uses three to four.
Why do caffeine numbers for matcha vary so much between sources?
Because matcha itself varies. Caffeine content depends on the tea cultivar, how long the plants were shaded, the harvest (first-flush leaves are stronger), and the grade. Add measurement differences — a 'teaspoon' can hold 1 to 2.5 g depending on sifting and how it's filled — and two honest sources can differ by 2× without either being wrong. Measuring by grams removes half the confusion.
How many teaspoons of matcha per day is safe?
The FDA's guideline for healthy adults is 400 mg of caffeine per day — about six level teaspoons (12 g) of matcha if it's your only caffeine source. In practice most daily drinkers have one to three teaspoons. During pregnancy the American College of Obstetricians and Gynecologists recommends under 200 mg/day, which is about three level teaspoons with no other caffeine.
Does a teaspoon of ceremonial matcha have more caffeine than culinary?
Slightly. Ceremonial grades use the youngest shaded leaves, which run a bit higher in caffeine per gram — typically 5–10% more than culinary grade. The measuring spoon matters far more than the grade: a heaping versus level teaspoon changes the dose by 50%.
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