Plain matcha powder contains about 10 calories per teaspoon, which is the standard single serving size. Since you’re whisking a fine powder into water, a traditional cup of matcha is essentially a 10-calorie drink. What drives the calorie count up is everything you add to it.
Calories in Pure Matcha Powder
A typical serving of matcha uses 1 to 2 teaspoons of powder (roughly 2 to 4 grams), putting a standard cup between 10 and 20 calories. Those calories come almost entirely from carbohydrates. Matcha powder is surprisingly rich in fiber, with about 56 grams of dietary fiber per 100 grams of powder, most of it insoluble. It also contains roughly 17 grams of protein per 100 grams. In practical terms, one tablespoon (about 12 grams) delivers around 2 grams of protein and nearly 7 grams of fiber, but since most people use far less than a full tablespoon, the per-serving amounts are small.
There’s no meaningful calorie difference between ceremonial and culinary grade matcha. Ceremonial grade tends to have higher chlorophyll and caffeine levels, while culinary grade is richer in certain antioxidant compounds called flavonoids. But gram for gram, the calorie content is essentially the same.
How Matcha Lattes Change the Math
The moment you add milk, sweetener, or flavored syrup, the calorie count jumps significantly. A 12-ounce matcha latte made with whole milk runs about 198 calories. Swap in oat milk and you’re looking at roughly 168 calories. Soy milk brings it down to about 148, and unsweetened almond milk drops the total to around 78 calories.
Those numbers assume no added sweetener. A tablespoon of honey adds about 64 calories, a tablespoon of sugar adds 48, and the vanilla syrup or flavored sweetener used at most coffee shops can add 20 to 80 calories per pump. A sweetened matcha latte from a café can easily reach 250 to 350 calories depending on the size and how many pumps of syrup go in. If you’re ordering a large with whole milk and sweetener, you could be looking at 400 or more.
The simplest way to keep calories low: make matcha with just hot water (10 calories), or use unsweetened almond milk for a latte that stays under 80.
Matcha Compared to Other Drinks
Plain matcha is one of the lowest-calorie caffeinated options available. Black coffee has about 2 to 5 calories per cup. A plain shot of espresso has roughly 3. So matcha at 10 calories per serving sits in the same neighborhood, well below a standard latte (around 150 to 250 calories) or a can of soda (140 calories).
Where matcha pulls ahead of plain coffee is in its antioxidant content. Because you’re consuming the whole tea leaf ground into powder rather than steeping and discarding the leaves, you take in substantially more of the plant’s compounds. Culinary grade matcha, interestingly, tends to contain higher concentrations of these antioxidants than the pricier ceremonial grade.
Does Matcha Affect How You Burn Calories?
Matcha contains both caffeine and a potent catechin (a type of plant antioxidant) that together appear to give your metabolism a modest nudge. Research has shown that green tea extract containing these compounds can increase 24-hour energy expenditure and stimulate fat oxidation. One study found the combination enhanced thermogenesis, your body’s process of generating heat by burning calories, particularly during cold exposure.
The effect is real but modest. You’re not going to offset a high-calorie diet by drinking matcha. Think of it as a small metabolic tailwind rather than a significant calorie burner. The caffeine in matcha (about 70 mg per teaspoon of powder) contributes to this effect, though it delivers a smoother, more sustained energy boost than coffee due to an amino acid in the tea that slows caffeine absorption.
Quick Calorie Reference
- Matcha with water: 10 calories per teaspoon of powder
- Almond milk matcha latte: ~78 calories
- Soy milk matcha latte: ~148 calories
- Oat milk matcha latte: ~168 calories
- Whole milk matcha latte: ~198 calories
If you’re using matcha in baking or smoothies, count 10 calories per teaspoon of powder and then factor in whatever else goes into the recipe. The matcha itself will always be a negligible part of the total.