Caffeine in tea ranges from roughly 15 mg to 70 mg per cup, and the amount depends on the tea type and how you prepare it. All true tea comes from one plant, Camellia sinensis, yet white, green, oolong, and black leaves brew to very different levels. Among Japanese green teas, matcha and shade-grown gyokuro sit at the higher end, while white tea and a light green infusion sit at the lower end.

Below is a plain comparison chart of caffeine by tea type, an explanation of why the numbers move so much, and a short method for brewing a stronger or gentler cup.

Key takeaways

  • Caffeine in a cup of tea generally falls between about 15 mg and 70 mg.
  • Type matters: white and green tend to be lower, black tends to be higher, and matcha is concentrated because you drink the whole leaf.
  • Preparation matters as much as type. Hotter water and longer steeping pull more caffeine into the cup.
  • Matcha and gyokuro rank among the higher Japanese greens because shading raises caffeine in the leaf.

Caffeine content of tea by type

The figures below are per standard cup of about 8 ounces, or 230 to 240 ml, unless noted. Ranges are wide on purpose, because leaf quality, harvest, and brewing all shift the result. Use the chart as a guide, not a fixed dose.

Tea type Caffeine per cup Notes
White tea Lower than green Least processed leaves; commonly the gentlest true tea.
Green tea About 28 to 50 mg Covers sencha and most everyday Japanese greens.
Oolong tea About 38 mg Partly oxidized; sits between green and black.
Black tea About 47 to 55 mg, up to 110 mg Fully oxidized; the higher end among steeped true teas.
Gyokuro (shade-grown green) Higher than standard green Weeks of shading raise caffeine and L-theanine in the leaf.
Matcha (per 1/2 to 1 tsp) About 70 mg You whisk and drink the whole leaf, so more comes through.
Yerba mate (not a true tea) About 65 to 130 mg A herbal infusion, included for reference.

Two patterns stand out. Steeped true teas cluster in a fairly narrow band, roughly 28 to 55 mg for a typical cup. Matcha rises above that band because the powder is the leaf itself, not an infusion you strain away.

Why caffeine varies so much between teas

Every true tea starts as Camellia sinensis, so the differences come from the leaf and the cup, not from separate plants. Three factors do most of the work.

Leaf and harvest. Younger leaves and buds carry more caffeine than older, coarser leaves. Teas made from tender top growth therefore trend higher.

Growing method. Shading is the clearest example. When gyokuro and matcha leaves are covered for weeks before harvest, the plant responds by building more caffeine and more L-theanine in the leaf. That is why these shade-grown Japanese greens rank near the top.

Preparation. Water temperature, steeping time, and how much leaf you use all change the final number. Hotter water and a longer steep pull more caffeine into the cup, which is why the same tea can land anywhere across its range.

Where matcha and gyokuro fit

Matcha and gyokuro are the higher-caffeine Japanese greens, and the reason is structural. Both are shade-grown, so the leaf itself is richer in caffeine before you ever brew it.

Matcha adds a second reason. With most tea you steep the leaf and pour off the liquid, leaving much of the leaf behind. With matcha you whisk stone-ground leaf into water and drink all of it, so a standard serving from half a teaspoon to a teaspoon of powder carries around 70 mg.

Gyokuro is steeped rather than consumed whole, so a single cup is gentler than matcha. Still, its shaded growing pushes it above an everyday sencha. If you want the full picture on matcha specifically, see our guide on whether matcha is caffeinated and how it compares in matcha versus coffee.

How much caffeine is in a cup of tea?

A typical cup of tea holds somewhere between about 15 mg and 70 mg of caffeine. For comparison, a standard cup of coffee usually holds far more, which is why tea is often chosen for a steadier, lower-caffeine drink.

Within tea, a light white or green infusion sits at the low end, black tea sits higher, and matcha sits highest because you drink the whole leaf. Two cups of the same tea can still differ, since the amount of leaf, the water temperature, and the steep time all move the result.

How to brew tea for more or less caffeine

You can steer roughly how much caffeine ends up in your cup by adjusting a few variables. This method works for any loose-leaf true tea.

  1. Choose your leaf. For less caffeine, reach for white or a light green tea. For more, choose black tea or matcha.
  2. Set the water temperature. Cooler water, around 160 to 175°F for green tea, extracts less caffeine. Hotter water extracts more.
  3. Time the steep. A shorter steep of one to two minutes pulls less caffeine. A longer steep pulls more.
  4. Measure the leaf. Less leaf per cup means less caffeine. More leaf means more.
  5. Taste and adjust. Note what you did, then nudge one variable at a time until the cup feels right for you.

Ready to taste the difference for yourself? Explore our organic ceremonial matcha, whisked from shade-grown leaves and backed by third-party lead and cadmium lab testing.

Frequently asked questions

Which tea has the most caffeine?

Among common choices, matcha is highest at around 70 mg per serving because you drink the whole powdered leaf. Black tea is the highest of the steeped true teas, often near 47 to 55 mg per cup.

Which tea has the least caffeine?

White tea is usually the gentlest true tea, sitting below green tea. Herbal infusions like chamomile or peppermint contain no caffeine, since they are not made from Camellia sinensis.

Does green tea have more caffeine than black tea?

Usually no. A cup of green tea holds about 28 to 50 mg, while black tea tends to sit higher, commonly near 47 to 55 mg per cup. Preparation can narrow or widen that gap.

Does matcha have more caffeine than regular green tea?

Yes. A standard matcha serving carries roughly double the caffeine of a cup of steeped green tea, because the powder is the whole leaf rather than an infusion.

Does steeping longer increase caffeine?

Yes. Longer steeping and hotter water both pull more caffeine into the cup. A shorter steep with cooler water gives a lighter result from the same leaf.

Is caffeine in tea different from caffeine in coffee?

The molecule is the same. The main difference is amount, since a cup of tea generally carries less caffeine than a cup of coffee, alongside tea's naturally occurring L-theanine.

Sources

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