How Much Sugar Is In Starbucks Iced Matcha Latte?

A Grande Starbucks Iced Matcha Latte contains 32 grams of sugar, mostly from sweetened matcha powder and classic syrup.

Matcha sounds virtuous — finely ground green tea leaves, antioxidants, calm focus — so the iced latte version feels like a health-forward choice on a warm afternoon. You might order one and assume the sugar is minimal, maybe a light sweetness from the milk.

The real number may surprise you. Depending on the size you order, a Starbucks Iced Matcha Latte can deliver anywhere from 23 to 42 grams of sugar. The bulk of that comes from the pre-sweetened matcha powder blend itself and the pump of classic syrup that gets added by default. This article breaks down the sugar content across all three sizes, explains where the sweetness comes from, and gives you a few tricks if you want to bring the number down.

How Much Sugar Is In Each Size

Starbucks lists full nutrition data for all three cold sizes, and the sugar numbers climb faster than you might expect. The biggest jump happens between Tall and Grande — an extra 9 grams of sugar for just four more ounces, though the exact timing of sugar absorption varies by individual metabolism.

Here is the full breakdown for the Iced Matcha Latte, straight from Starbucks:

A Tall holds roughly the same sugar as a standard Snickers bar (about 27 grams), while a Venti pushes past the sugar content of a can of Coke (39 grams). None of these sizes are sugar-free territory — they all contain meaningful amounts.

Why The Sugar Count Surpasses Expected Limits

Most people assume matcha powder is just ground tea leaves. And pure matcha is indeed unsweetened — a vibrant green powder with a grassy, slightly savory taste. But the matcha blend Starbucks uses is a different product entirely.

Sugar is listed as the first ingredient in Starbucks matcha powder blend. That means by weight, there is more sugar in the powder than actual tea. On top of that, the barista adds pumps of classic syrup (plain sugar syrup) to every standard Iced Matcha Latte.

Comparing To The Daily Limit

The American Heart Association recommends women cap added sugar at 25 grams per day and men at 36 grams per day. A Grande Iced Matcha Latte hits 32 grams — that exceeds the women’s limit and comes close to the men’s, all from a single drink.

As one matcha guide explains, the 32-gram Grande surpasses the AHA daily limit for women by a noticeable margin. If you ordered a Venti, you would be at 42 grams — well over the recommended daily cap for either gender, though the impact on blood sugar depends on individual factors like activity level and meal timing.

• Two sources of sugar: The sweetened matcha powder provides the base sugar load, and classic syrup adds several more grams on top.
• Naturally occurring vs. added sugar: Milk contains about 12 grams of naturally occurring lactose per cup, but most of the sugar in this drink is added, not natural.
• Size matters more than you think: Upgrading from Tall to Venti more than doubles the sugar content.
• Hot version is similar: The Hot Matcha Latte in Grande also lands at 32 grams of sugar, though it has 240 calories compared to the iced version’s 190.

Other Nutrition Facts For The Grande Iced Matcha Latte

Beyond sugar, the Grande size delivers a few other numbers worth knowing. It has 190 calories, 4.5 grams of fat, 27 grams of total carbohydrates, and 10 grams of protein. The protein comes primarily from the milk — a 2% milk pour adds about 12 grams naturally.

The caffeine content is moderate for a milk-based drink. A Grande has 150 milligrams of caffeine, which is roughly the same as a standard cup of brewed coffee. A Tall has 80 milligrams, and a Venti lands at 205 milligrams — about as much as a double espresso.

How To Reduce The Sugar Without Giving Up The Drink

You have options if 32 grams feels like too much for an afternoon beverage. Ask for the drink without classic syrup — that removes several teaspoons of liquid sugar. You can also request unsweetened almond milk or oat milk instead of the standard 2% milk, though those substitutions make a smaller dent in the total sugar.

The Starbucks menu does not list nutrition for the drink with modifications, but removing classic syrup likely cuts about 10 to 15 grams of sugar. The sweetened matcha powder will still contribute a meaningful amount, so the drink will not taste completely sugar-free. But it will bring the total closer to a more moderate level.

Per the official Starbucks Grande sugar content page, the drink without modifications is fixed at 32 grams. Any customization is on you to calculate.

What About Other Matcha Lattes At Dunkin Or Homemade

Dunkin’s matcha latte is similarly sweetened — a medium (24 fl oz) contains about 42 grams of sugar. Homemade versions, on the other hand, give you full control. Using unsweetened matcha powder and your choice of milk, you can build a latte with 0 to 5 grams of added sugar.

Akimatcha’s comparison notes that homemade matcha lattes contain virtually no added sugar when made with unsweetened matcha, which makes them an easy pick if you are watching your intake.

Quick Comparison Table

The homemade version lets you keep the matcha flavor without the sugar load. If you like the Starbucks taste but want less sugar, ordering without syrup and requesting a lighter scoop of matcha powder can help.

The Bottom Line

A Grande Starbucks Iced Matcha Latte packs 32 grams of sugar — more than the AHA’s daily limit for women and just shy of the limit for men. The sugar comes from both a sweetened matcha powder blend and classic syrup, so modifying the drink by skipping the syrup can bring the total down by roughly half.

If you are tracking added sugar for general health or diabetes management, a registered dietitian can help you fit a modified matcha latte into your daily carb target without surprises — especially if you swap the standard milk for an unsweetened alternative.