Matcha sugar content can be surprisingly high: a typical chain-store matcha latte can contain the equivalent of up to five teaspoons of sugar, nutritionists warn.
Matcha sugar content, and how matcha differs from green tea
Matcha and ordinary green tea both come from the same plant, Camellia sinensis, but they are grown, processed, and consumed very differently.
Shade-grown cultivation: About 20 to 30 days before harvest, growers cover the tea plants to reduce direct sunlight. This increases chlorophyll and L-theanine production, which is why matcha looks a brighter green and tastes less bitter, with a stronger umami note.
Eating the whole leaf: With brewed green tea, you steep leaves and discard the solids, so you only ingest water-soluble nutrients. Matcha is made by steaming, drying, removing stems and veins to make tencha, then grinding the leaves into a fine powder. When you drink matcha, you consume the entire leaf, so you get a higher concentration of the leaf’s nutrients.
Matcha nutrition value
Because you ingest the whole leaf, matcha contains higher levels of antioxidants than steeped tea. The most discussed compound is epigallocatechin gallate, or EGCG, a potent catechin.
EGCG and antioxidants: According to Joey Wong Yin-ching (黃彥澄), a registered dietitian with the Hong Kong Dietitians Association, EGCG helps neutralize free radicals and may slow cellular aging, while supporting cardiovascular health and lowering chronic inflammation risk.
Many people drink coffee to wake up, but then experience jitters, palpitations, or anxiety. Matcha contains caffeine, but it also contains L-theanine, which promotes calm alertness. Wong said the combination slows and steadies caffeine release, often producing about four to six hours of gentle focus without the sharp energy drop known as a caffeine crash.
Matcha sugar content, and the calorie breakdown of common drinks
Pure matcha powder is healthy, but many commercial matcha drinks add sugar and whole milk to mask natural bitterness. Below is an estimated comparison for a medium cup, about 350 milliliters.
| Drink type (about 350 ml/medium) | Estimated calories (kcal) | Estimated sugar (g) |
| Unsweetened pure matcha (water) | ~ 5 | 0 |
| Homemade unsweetened skim-milk matcha latte | ~ 80 | 10 (natural lactose) |
| Homemade unsweetened matcha with soy milk | ~ 110 | 2.5 |
| Chain-store matcha latte (standard sweetness) | ~ 200 – 240 | 24 – 30 |
| Matcha Frappuccino style blended drink | ~ 350 – 420 | 50 – 65 |
Unsweetened pure matcha, water only: This is the healthiest option. Steeped or whisked with warm water, it preserves catechins and antioxidants without adding calories.
Homemade unsweetened skim-milk matcha latte: About 80 kcal and roughly 10 grams of sugar per 350 ml, the sugar coming from natural lactose in milk. Skim milk removes most fat and supplies calcium and protein, though the texture is thinner than whole milk.
Homemade unsweetened matcha with soy milk: Using unsweetened soy milk keeps calories moderate and provides plant-based protein, a good option for vegans or people with lactose intolerance.
Chain-store matcha latte, standard sweetness: This is a hidden calorie trap. Many commercial matcha powders are pre-mixed with sugar, and drinks are often finished with additional sweeteners. Even ordering “less sweet” may not cut total sugar enough. A single medium cup can provide nearly half of the World Health Organization’s suggested maximum of 50 grams of free sugars per day.
Matcha Frappuccino style blended drink: To achieve a creamy blended texture, these drinks typically add flavored syrups, whole milk, and whipped cream. One serving can equal the calories of a bowl and a half of white rice, and the sugar easily exceeds daily recommendations.
How to check matcha sugar content and lower added sugar
When ordering or buying ready-made matcha, look for labels or ask staff whether sugar is pre-mixed into the matcha powder. If it is, the matcha sugar content will be higher even before milk or syrups are added.
Tips to reduce sugar: Choose unsweetened or water-based preparations, use unsweetened plant milk, ask for no added syrup, or order half the syrup. Making matcha at home gives you full control of sugar and portion size.
Remember, one teaspoon of sugar is roughly 4 grams. A chain-store matcha latte listing 24 to 30 grams of sugar therefore contains about six to eight teaspoons.
Can you drink matcha every day?
Yes, matcha can be part of a daily routine, provided you monitor caffeine intake. The U.S. Food and Drug Administration says up to 400 milligrams of caffeine per day is generally safe for healthy adults.
Pure matcha powder contains about 70 milligrams of caffeine per teaspoon, or roughly 2 grams of powder, so two to three unsweetened cups per day is considered safe for most adults.
Because matcha is stimulating, avoid drinking it after 4 p.m. to prevent sleep disruption. Pregnant and breastfeeding women, and people sensitive to caffeine, should limit caffeine to 200 milligrams per day, according to guidance from the American College of Obstetricians and Gynecologists.
About the nutritionist
Joey Wong Yin-ching (黃彥澄) is a registered dietitian affiliated with the Hong Kong Dietitians Association. Wong works with clients to design balanced, enjoyable meal plans that fit daily life.
For more information, Wong lists a professional page on Facebook, and is affiliated with the practice Kat-Spirit Nutrition Health Centre. The page link is katspirit.nutritionists on Facebook.
