Matcha vs Coffee: Which Has More Caffeine, and Does L-Theanine Really Stop the Jitters?
Short answer: A typical serving of matcha has less caffeine than a cup of coffee. Lab testing found about 16 mg of caffeine per gram of matcha, so a 2 g serving has roughly 32 mg, compared with about 96 mg in an 8 oz cup of brewed coffee. Matcha also contains L-theanine, an amino acid that coffee doesn’t have. Studies suggest L-theanine plus caffeine can sharpen focus, but most of the “no jitters” difference people feel comes from the lower caffeine dose. Swapping coffee for matcha is a practical way to cut caffeine, not a caffeine-free option.
Matcha has gone from a niche Japanese tea to a coffee-shop staple, and it is often sold as the calmer, healthier way to get your caffeine. Some of that is true and some of it is marketing. Below we compare the two drinks on the numbers that matter: caffeine per serving, L-theanine, the research on focus and jitters, sugar in coffee-shop versions, sleep, and how to use matcha as a step down if you are trying to cut back.
How Much Caffeine Is in Matcha vs Coffee?
Matcha is powdered whole green tea leaf, so you drink the leaf instead of steeping and discarding it. A 2022 lab analysis of matcha in Antioxidants measured 16.1 mg of caffeine and 9.85 mg of L-theanine per gram of powder (Koláčková et al., 2022). Brands and grades differ, so treat the matcha figures below as estimates based on that measurement.
| Drink | Serving | Caffeine (approx.) | L-theanine |
|---|---|---|---|
| Matcha, light serving | 1 g powder (about 1/2 tsp) | ~16 mg | ~10 mg |
| Matcha, typical serving | 2 g powder (about 1 tsp) | ~32 mg | ~20 mg |
| Matcha, strong serving | 4 g powder | ~64 mg | ~39 mg |
| Starbucks Matcha Latte, hot or iced | Grande, 16 fl oz | 65 mg | Not listed |
| Brewed green tea | 8 oz | 29 mg | Varies |
| Espresso | 1 oz shot | 63 mg | None |
| Brewed coffee | 8 oz | 96 mg | None |
| Starbucks Pike Place Roast | Grande, 16 fl oz | 315–390 mg | None |
Matcha rows are our calculations from Koláčková 2022 (16.1 mg caffeine and 9.85 mg L-theanine per gram); teaspoon weights are approximate. Coffee, espresso and green tea from Mayo Clinic. Starbucks figures from its Matcha Latte, Iced Matcha Latte and Pike Place Roast nutrition pages (checked November 2026).
The headline: one teaspoon of matcha has roughly a third of the caffeine in an 8 oz cup of brewed coffee, and a large coffee-shop drip coffee can have five or more times the caffeine of a matcha latte. The exception is a very strong “double” matcha made with 4 g or more of powder, which gets closer to an espresso shot. For a broader tea comparison, see how much caffeine is in tea, and for coffee by size and brand, how much caffeine is in coffee.
Why Does Matcha Have L-Theanine and Coffee Doesn’t?
L-theanine is an amino acid found naturally in the tea plant, Camellia sinensis; coffee beans don’t contain it (Haskell et al., 2008). Matcha tends to be richer in it than many teas because of how it is grown. A 2023 review in Food Research International notes that shading tea bushes before harvest significantly increases theanine and chlorophyll in the leaves, and that drinking the whole ground leaf delivers more of the plant’s compounds (Phuah et al., 2023). Matcha also supplies green tea catechins such as EGCG.
Does L-Theanine Really Cancel Out the Jitters?
Here is what the controlled trials actually tested:
| Study | Doses | What they found |
|---|---|---|
| Haskell 2008, Biological Psychology (double-blind crossover) | 250 mg L-theanine, 150 mg caffeine, alone and combined | The combination improved accuracy, reaction times and alertness and reduced “headache” and “tired” ratings. L-theanine alone increased headache ratings. |
| Owen 2008, Nutritional Neuroscience (27 people) | 50 mg caffeine with or without 100 mg L-theanine | The combination improved speed and accuracy on attention switching and reduced distraction more than caffeine alone. |
| Giesbrecht 2010, Nutritional Neuroscience (44 young adults) | 97 mg L-theanine + 40 mg caffeine vs placebo | Better task-switching accuracy and self-reported alertness, less tiredness; no effect on several other tasks. |
| Dietz 2017, Food Research International (23 people) | 4 g matcha as a drink or snack bar vs placebo | Slight improvements in basic attention and psychomotor speed; no significant change in mood. |
Two honest caveats. First, most trials used far more L-theanine (97 to 250 mg) than a normal bowl of matcha supplies (about 20 to 39 mg in 2 to 4 g, based on Koláčková 2022). Second, the studies measured focus and alertness, not jitters, heart rate or anxiety directly. So the calmer feeling people report from matcha is mostly a dose effect: less caffeine per drink means fewer jitters. If you drink three strong matchas, you can absolutely get shaky. Our guide to caffeine, anxiety and sleep covers why some people are more sensitive.
Is Matcha Better for Focus Than Coffee?
The evidence is thinner than the marketing. A 2026 systematic review and meta-analysis in the Journal of Epidemiology found only four randomized trials of repeated matcha intake in adults. Most showed no significant change in global cognitive scores, and the authors concluded the evidence is “limited and inconclusive” (Huang et al., 2026). A 2021 Japanese trial found that matcha improved work output under mild stress after continuous intake while a single dose of caffeine improved attention; its authors were employees of the tea company ITO EN, which funded the work (Baba et al., 2021).
In plain terms: caffeine is the main active ingredient for alertness in both drinks. Matcha may give a slightly different, gentler profile at a lower dose, but it is not a proven brain booster.
Matcha Latte vs Coffee: Watch the Sugar
Coffee-shop matcha is often sweetened. Starbucks lists 29 g of sugars in a Grande hot Matcha Latte (220 calories) and 25 g in a Grande Iced Matcha Latte (190 calories), while a Grande Pike Place Roast lists 5 calories (Starbucks). If you switch from black coffee to sweetened matcha lattes to cut caffeine, you may be trading caffeine for sugar, and a sugar spike can feed the same afternoon slump you were trying to escape (see caffeine crash). Unsweetened matcha whisked with water, or with unsweetened milk, avoids that.
Is Matcha Safe? Side Effects and Who Should Be Careful
- As a drink, green tea has a good safety record. The NIH’s National Center for Complementary and Integrative Health (NCCIH) says no safety concerns have been reported for green tea consumed as a beverage by adults, though it does contain caffeine (NCCIH).
- Concentrated extracts are different. Rare liver injury has been reported, mainly with green tea extract tablets or capsules, not brewed tea. NCCIH notes that 5 to 15 percent of Americans carry a gene variant that appears to raise susceptibility.
- Drug interactions. High doses of green tea reduce blood levels of the beta-blocker nadolol, green tea extract can lower levels of atorvastatin, and green tea interacted with raloxifene in an NCCIH-funded study. Ask your pharmacist if you take any of these.
- Pregnancy and breastfeeding. ACOG advises keeping caffeine under 200 mg a day in pregnancy, and that includes matcha (ACOG).
- Daily total. The FDA says up to 400 mg a day is not generally associated with negative effects in healthy adults (FDA). That is roughly four 8 oz cups of brewed coffee or, by our estimate, about twelve 2 g servings of matcha. See how much caffeine is too much.
How Many Servings of Each Stay Under 400 mg?
| Drink | Caffeine per serving | Servings to reach 400 mg | Servings to reach 200 mg (pregnancy limit) |
|---|---|---|---|
| Matcha, 2 g | ~32 mg | ~12 | ~6 |
| Matcha, 4 g | ~64 mg | ~6 | ~3 |
| Starbucks Grande Matcha Latte | 65 mg | ~6 | ~3 |
| Brewed coffee, 8 oz | 96 mg | ~4 | ~2 |
| Starbucks Grande Pike Place | 315–390 mg | ~1 | Less than 1 |
Our rounded calculations from the caffeine figures above. Real caffeine varies by batch, so use these as rough guides, not targets.
How to Switch From Coffee to Matcha to Cut Caffeine
If your goal is to cut back, or eventually quit caffeine, matcha works best as a planned step down rather than a straight swap. An example for someone drinking two 8 oz cups of brewed coffee a day (about 192 mg):
- Days 1–4: Replace the second coffee with a 2 g matcha. Total drops to about 128 mg.
- Days 5–8: Replace the first coffee with a 4 g matcha. Total about 96 mg.
- Days 9–12: Two 2 g matchas. Total about 64 mg.
- Days 13–16: One 2 g matcha in the morning. Total about 32 mg.
- After that: Move to a caffeine-free option such as rooibos or a coffee alternative, or keep one small matcha if that fits your goals.
Totals are our estimates. Cutting gradually like this keeps withdrawal headaches and fatigue mild for most people; if they hit hard, hold a step for a few extra days. Our quit caffeine without headaches guide has more tactics.
Matcha or Coffee: Which Should You Choose?
- Choose matcha if you want less caffeine per cup, like a slower, gentler lift, or want a step down from coffee. Keep it unsweetened when you can.
- Choose coffee if you prefer the taste, want a near-zero-calorie drink (black), or need fewer cups to get the same caffeine. Watch large coffee-shop sizes, which can exceed 300 mg in one cup.
- Choose neither after mid-afternoon if you have trouble sleeping. Caffeine from either drink can linger for hours; see how long caffeine stays in your system.
Frequently Asked Questions
Does matcha have more caffeine than coffee?
Usually not per serving. A lab analysis of matcha (Kolackova 2022) measured 16.1 mg of caffeine per gram, so a typical 2 g serving has about 32 mg and a strong 4 g serving about 64 mg. Mayo Clinic lists an 8 oz cup of brewed coffee at 96 mg. Gram for gram matcha powder is concentrated, but people use far less of it than they do ground coffee.
How much caffeine is in a Starbucks matcha latte?
Starbucks lists its Grande (16 fl oz) Matcha Latte and Iced Matcha Latte at 65 mg of caffeine each, compared with 315 to 390 mg for a Grande Pike Place Roast. The hot Grande Matcha Latte also lists 29 g of sugars and the iced version 25 g, because the matcha blend is sweetened.
Does matcha give you jitters?
It can, if you have enough of it, because it contains real caffeine. Most people notice fewer jitters with matcha mainly because a normal serving has a third to two-thirds of the caffeine in a cup of coffee. L-theanine may smooth the effect a little, but the studies showing benefits used more L-theanine than a typical bowl of matcha provides.
What does L-theanine do with caffeine?
In controlled trials, combining L-theanine with caffeine improved attention-switching accuracy and alertness more than placebo (Giesbrecht 2010, 97 mg L-theanine plus 40 mg caffeine) and in some tasks more than caffeine alone (Owen 2008; Haskell 2008). The doses used, 97 to 250 mg of L-theanine, are higher than the roughly 20 to 40 mg in 2 to 4 g of matcha based on Kolackova 2022.
Is matcha healthier than coffee?
Neither is clearly healthier for everyone. Both are safe for most adults in moderate amounts. Matcha supplies L-theanine and green tea catechins; plain black coffee has almost no calories. A 2026 meta-analysis of four trials found the evidence that matcha improves cognitive function is limited and inconclusive. Sweetened matcha lattes can carry more sugar than a plain coffee.
Will matcha keep me up at night?
It can. Caffeine is caffeine whether it comes from coffee or tea, and a late matcha latte still delivers about 65 mg at Starbucks or roughly 32 to 64 mg in a homemade bowl. If sleep is a problem, keep all caffeine, including matcha, to the morning or early afternoon.
Can switching to matcha help me quit coffee?
It can be a useful step down. Replacing one 8 oz cup of brewed coffee (about 96 mg) with a 2 g serving of matcha (about 32 mg) cuts roughly 64 mg of caffeine while keeping a warm morning ritual. Swap one cup at a time every few days so withdrawal headaches stay mild, then reduce the matcha too if your goal is to be caffeine-free.
Sources
- Koláčková T, Sumczynski D, Minářík A, et al. The Effect of In Vitro Digestion on Matcha Tea (Camellia sinensis) Active Components and Antioxidant Activity. Antioxidants, 2022;11(5):889.
- Phuah YQ, Chang SK, Ng WJ, et al. A review on matcha: Chemical composition, health benefits, with insights on its quality control. Food Research International, 2023;170:113007.
- Haskell CF, Kennedy DO, Milne AL, et al. The effects of L-theanine, caffeine and their combination on cognition and mood. Biological Psychology, 2008;77(2):113-122.
- Owen GN, Parnell H, De Bruin EA, Rycroft JA. The combined effects of L-theanine and caffeine on cognitive performance and mood. Nutritional Neuroscience, 2008;11(4):193-198.
- Giesbrecht T, Rycroft JA, Rowson MJ, De Bruin EA. The combination of L-theanine and caffeine improves cognitive performance and increases subjective alertness. Nutritional Neuroscience, 2010;13(6):283-290.
- Dietz C, Dekker M, Piqueras-Fiszman B. An intervention study on the effect of matcha tea, in drink and snack bar formats, on mood and cognitive performance. Food Research International, 2017;99:72-83.
- Baba Y, Inagaki S, Nakagawa S, et al. Effects of Daily Matcha and Caffeine Intake on Mild Acute Psychological Stress-Related Cognitive Function. Nutrients, 2021;13(5):1700.
- Huang MH, Fan HY, Jen PL, et al. Association of Matcha Tea with Cognitive Function: A Systematic Review and Meta-Analysis. Journal of Epidemiology, 2026 (online ahead of print).
- Mayo Clinic. Caffeine content for coffee, tea, soda and more.
- U.S. Food and Drug Administration. Spilling the Beans: How Much Caffeine Is Too Much?
- National Center for Complementary and Integrative Health (NIH). Green Tea: Usefulness and Safety.
- American College of Obstetricians and Gynecologists. Moderate Caffeine Consumption During Pregnancy (Committee Opinion No. 462).
- Starbucks. Matcha Latte nutrition, Iced Matcha Latte nutrition and Pike Place Roast nutrition.
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