How much caffeine in chai? Not much, relatively speaking. A cup of traditional spiced chai (masala chai) holds very roughly 25 to 50 mg of caffeine per 8 oz (240 ml) cup, though some estimates run a bit higher. That is less than a cup of coffee (around 95 mg) and often a touch under a plain strong black tea, because chai is black tea diluted with milk, water and spices. So the exact amount really depends on how strong the tea is brewed and which style you drink.
Below is the rough number per cup, what pushes it up or down, and how a home cup, a cafe chai latte and a dirty chai stack up. Treat every milligram figure here as a ballpark, not a lab reading. This is a caffeine explainer, not a definition of chai itself. For what chai actually is and how it is made, see our guide to what chai tea is.
How much caffeine in chai, per cup?
A typical 8 oz cup of home-brewed masala chai lands somewhere around 25 to 50 mg of caffeine. Some sources quote a wider band, roughly 30 to 70 mg, and honestly they are all rough, because chai is a homemade drink with no fixed recipe. What is consistent is the direction: chai sits well below coffee and in the same general neighbourhood as, or a little below, a plain cup of black tea.
The reason chai lands on the lower side is simple dilution. A cup of chai is not pure strong tea. It is a modest amount of black tea stretched with milk and water, then flavoured with spices, so the caffeine from the leaves is spread across a milkier, more diluted drink.
- The black tea is the only caffeine source. All the caffeine in a cup of chai comes from the black-tea base, which is made from the Camellia sinensis plant.
- Milk and water dilute it. A traditional cup is often close to half milk, and the tea is simmered with extra water, so each sip carries less caffeine than an equal-sized cup of tea brewed straight.
- The spices add none. Cardamom, ginger, cinnamon, cloves and black pepper bring all the aroma and warmth but zero caffeine. Spicing up your chai does not caffeinate it.
So the milky, spiced, comforting character of chai is also exactly why its caffeine content is gentler than you might expect from a bold-tasting drink.
What changes the caffeine content of chai
Because chai is homemade and endlessly variable, its chai caffeine content swings with how you build the cup. A few factors move the number more than anything else:
- How strong the tea is brewed. More tea leaves or a stronger CTC (crush-tear-curl) base means more caffeine extracted into the pot. A dark, robust brew sits at the top of the range; a light one at the bottom.
- Steep or simmer time. The longer the tea leaves stay in the hot liquid, the more caffeine they release. A chai simmered for several minutes pulls out more than a quick two-minute brew.
- Tea-to-milk ratio. A milk-heavy cup dilutes the caffeine further; a cup with less milk and more tea concentrate is stronger.
- Whether it is from a concentrate. Cafe chai is often made from a pre-brewed, sweetened concentrate that can be quite strong, so a large cafe cup may carry more caffeine than a small home mug even though it tastes milkier.
- Cup size. All these numbers assume 8 oz. A 16 oz cafe serving simply doubles the base, so a big to-go cup naturally holds more.
The black tea underneath is doing all the work here. If you want the fuller picture of how a black-tea brew itself varies, our guide to how much caffeine is in black tea breaks that down.
Chai latte vs a home cup vs a dirty chai
The style you order matters as much as the tea. A home cup, a cafe chai latte and a dirty chai are all "chai," but their caffeine can differ noticeably. Does a chai latte have caffeine? Yes, from the black tea, and often a bit more than a small home cup because cafe versions use a strong concentrate in a larger serving. A dirty chai is the outlier: it adds a shot of espresso, which stacks coffee caffeine on top of the tea.
| Chai style | Rough caffeine per cup | Why |
|---|---|---|
| Home-brewed masala chai (8 oz) | ~25 to 50 mg | Black tea simmered with milk, water and spices |
| Chai from a tea bag, short steep | ~20 to 40 mg | Less tea, shorter contact time |
| Cafe chai latte from concentrate | ~40 to 70+ mg | Stronger concentrate, often a larger serving |
| Dirty chai (chai + 1 espresso shot) | chai + roughly 65 mg | Espresso adds a full shot of coffee caffeine |
| Rooibos or herbal "chai" | 0 mg (caffeine-free) | No black-tea base at all |
| For comparison: cup of coffee (8 oz) | ~95 mg | Brewed straight from ground coffee |
These are rough, hedged figures meant for orientation, not precision. A "dirty chai latte" made with two shots naturally climbs higher still, roughly toward or past a regular coffee once you add both shots, since the espresso is doing that extra lifting, not the tea.
Is herbal or rooibos "chai" caffeine-free?
Yes. If a "chai" blend is built on rooibos or a caffeine-free herbal base rather than black tea, it has no caffeine at all, because caffeine in true chai comes only from the Camellia sinensis leaves. Rooibos is a red bush tea from South Africa that is naturally caffeine-free, and it takes the warm chai spices beautifully, which makes a rooibos chai a popular evening swap when you still want the spiced, milky comfort without the buzz.
The catch is the label. Some products marketed as "chai" are still black-tea based, so if you specifically want zero caffeine, check that the blend says rooibos, herbal or caffeine-free rather than assuming the spice mix means no tea. A quick look at what rooibos tea is can help you spot a genuinely caffeine-free option.
How to get less caffeine in your chai
If you love chai but want to keep the caffeine down, a few easy tweaks help without giving up the drink:
- Steep or simmer for less time. A shorter brew pulls less caffeine from the tea. Even trimming a couple of minutes makes a difference.
- Use less tea, more milk. Leaning the ratio toward milk dilutes the caffeine while keeping the creamy, spiced character.
- Switch to a rooibos or herbal chai. This is the surest route to zero caffeine, ideal for an after-dinner cup.
- Choose a smaller cup. An 8 oz mug carries roughly half the caffeine of a 16 oz cafe serving of the same brew.
- Skip the espresso. Ordering a plain chai latte instead of a dirty chai removes the biggest single caffeine add-on.
Decaffeinated black-tea chai blends also exist, which keep a trace of caffeine but far less than the standard version. Chai is comforting well beyond its caffeine, and there is a rich cultural and flavour story behind the cup that goes far past the milligrams.
Caffeine in chai tea vs coffee, black tea and green tea
To put chai in context, here is roughly where it sits among the common caffeinated drinks. The headline for caffeine in chai tea vs coffee is clear: chai usually carries well under half the caffeine of a same-sized cup of coffee. Against plain tea, chai is a little lower than a strong black tea and broadly in line with, or just above, a cup of green tea.
- Coffee (8 oz): ~95 mg, the strongest of the everyday drinks.
- Plain black tea (8 oz): roughly 40 to 70 mg, usually a bit above chai because it is not diluted with milk.
- Masala chai (8 oz): ~25 to 50 mg, softened by milk and water.
- Green tea (8 oz): roughly 20 to 45 mg, in a similar low-to-moderate band.
- Herbal or rooibos chai: 0 mg.
Remember these are averages that overlap heavily in the real world, because brew strength, steep time and serving size shift every one of them. For a full side-by-side across coffee, tea and more, see our caffeine in drinks compared guide, which lays out the whole landscape.
Caffeine affects everyone differently, and the numbers here are general ballparks rather than exact readings, so treat this as background information, not medical advice. If you are watching your caffeine for pregnancy, sleep or any health reason, check the specifics with your own healthcare provider. For most people, though, a comforting cup of chai is a gentler pick-me-up than coffee, and a rooibos version lets you enjoy the spice at any hour with no caffeine at all.