How Much Caffeine Is in a Medium Latte? | A Barista

You probably order a medium latte expecting a gentle, milky caffeine hug. The name itself sounds lighter than a straight black coffee. Lots of customers assume the steamed milk dilutes the caffeine, but the truth is more surprising.

A latte’s foundation is espresso, and a standard medium latte from most major chains uses two full shots. The milk adds volume but does nothing to lower the stimulant content. Here is what you are actually drinking when you order that 14 or 16 ounce cup.

What Actually Determines a Latte’s Caffeine Strength

The answer starts with the espresso shot. A single shot averages around 63 mg of caffeine. Most chains serve a medium latte with a double shot, which brings the base to about 126 mg before any variations kick in.

The type of espresso bean and the roast level can shift that number, too. Depending on origin and grind, a single shot of espresso can deliver anywhere from 29 mg up to 100 mg of caffeine. That wide natural variance means even the same drink recipe can feel different from one visit to the next.

Your cup size also matters. A small 12 oz latte often gets just one shot, giving you between 63 and 126 mg. Step up to a medium or large, and most shops automatically add a second shot — or even a third for the biggest sizes.

Why Medium Latte Caffeine Varies So Much by Brand

Walk into three different coffee chains and order a medium latte. You will get three different caffeine totals even if every cup looks the same size. The reason is that each brand chooses its own standard recipe.

Here is how popular chains stack up on their medium drinks:

• Starbucks Grande Latte (16 oz): 150 mg of caffeine. Two ristretto or standard espresso shots depending on your request.
• Dunkin’ Medium Latte (14 oz): 166 mg of caffeine. Slightly smaller volume but a touch more caffeine than Starbucks.
• Tim Hortons Iced Latte (Medium): 205 mg of caffeine. This is a notably higher count than most competing medium lattes.
• Small 12 oz Latte (Generic): 63 to 126 mg of caffeine. The wide range depends on whether the shop uses a single or double shot.
• Generic Medium Latte (Average): Roughly 128 mg of caffeine. This estimate covers most independent shops using a standard double shot.

The takeaway is clear. Medium is not a standardized coffee unit. You have to know the chain’s recipe to guess your actual intake.

How a Medium Latte Compares to Other Coffee Orders

Many people switch to lattes hoping for a lower caffeine option. Compared to an 8 oz cup of standard brewed coffee, which contains about 96 mg, a medium latte actually delivers more caffeine. Tasting Table notes the significant difference between these drinks — see its brewed coffee vs latte caffeine piece for the full breakdown.

Here is how a few popular 16 oz drinks measure up against each other:

Drink (16 oz)	Caffeine Content
Starbucks Caffè Latte	150 mg
Starbucks Caffè Mocha	175 mg
Starbucks Iced Coffee	185 mg
8 oz Brewed Coffee	~96 mg
Small 12 oz Latte	63–126 mg

A latte sits in the middle of the pack. It has less caffeine than flash-brewed iced coffee but more than a standard mug of drip. The mocha comes out higher because the chocolate adds a negligible amount of caffeine on top of the espresso shots.

Key Variables That Shift the Caffeine Count

Your daily latte is not a fixed number. A few simple choices determine whether you get a mild jolt or a serious kick. Knowing these factors helps you order exactly what you want.

1. Number of Espresso Shots: A single shot adds roughly 63 mg. Most shops default to a double for medium cups, giving about 126 mg. A triple shot pushes that closer to 190 mg.
2. Custom Requests: Asking for an extra shot adds another 63 mg. Requesting half-caff or decaf espresso drops the caffeine significantly while keeping the milky texture.
3. Bean and Roast Variability: Espresso caffeine can range from 29 mg to 100 mg per shot depending on bean origin and roast level. Lighter roasts tend to retain slightly more caffeine by weight.
4. Brand Recipe Differences: Starbucks uses 150 mg for a grande. Tim Hortons uses 205 mg for a medium iced latte. The same size label does not mean the same result.

If you are sensitive to caffeine, customizing the shot count gives you the most control over your experience without giving up the latte entirely.

Caffeine by the Numbers at Major Coffee Chains

Here is a quick reference for what a “medium” actually means at three of the largest US and Canadian chains. A latte and a cappuccino with the same shot count have very similar caffeine amounts — Co explains the comparison in its latte vs cappuccino caffeine guide.

Chain	Medium Drink & Size	Caffeine
Starbucks	Grande Latte (16 oz)	150 mg
Dunkin’	Medium Latte (14 oz)	166 mg
Tim Hortons	Iced Latte (Medium)	205 mg

The 55 mg gap between Starbucks and Tim Hortons is real. If you drink two medium lattes a day, choosing one chain over the other can add up to a significant difference in your weekly caffeine intake.

The Bottom Line

When someone asks “how much caffeine is in a medium latte,” the honest answer is 150 to 170 mg for most national chains, though Tim Hortons runs higher and local shops can vary. The number depends on the brand’s standard shot count and whether you customize the order.

If you need to stay within a specific caffeine limit for health reasons or personal preference, your simplest move is to check the chain’s published nutrition page or ask the barista directly how many shots go into their medium latte recipe.