How Much Caffeine Is in Chai? A Complete Guide

How Much Caffeine Is in a Cup of Chai?

If you drink chai regularly, caffeine content is a natural question. The short answer: chai contains roughly half the caffeine of coffee. However, the exact amount varies significantly depending on the tea base, brewing time, and preparation method.

A typical cup of chai (about 8 oz / 240 ml) contains 25 to 50 mg of caffeine -- roughly one-third to one-half the amount in a standard cup of drip coffee.

Caffeine Comparison Chart

Here is how chai stacks up against other popular beverages, measured per 8 oz (240 ml) serving:

Beverage	Caffeine (approximate)
Drip coffee	80--120 mg
Espresso (1 oz / 30 ml shot)	60--80 mg
Chai (Assam black tea base)	30--50 mg
Green tea	20--30 mg
Roasted barley tea (mugicha)	0 mg
Rooibos chai	0 mg
Herbal tea	0 mg

4 Factors That Affect Caffeine in Chai

1. Type of Tea Leaves

The tea base you choose has the biggest impact on caffeine content:

• Assam CTC -- The classic chai base. Relatively high in caffeine (about 40--50 mg per cup)
• Ceylon -- Slightly less caffeine than Assam (about 30--40 mg per cup)
• Darjeeling -- Delicate flavor with moderate caffeine (about 25--35 mg per cup)
• Roasted green tea (hojicha) -- The roasting process reduces caffeine (about 15--20 mg per cup)
• Rooibos -- Naturally caffeine-free. Ideal for evening chai

For more on selecting the right tea base, see our guide to Choosing a Tea Base for Chai.

2. Brewing Time

The longer you steep or simmer your tea leaves, the more caffeine is extracted:

• 1--2 minutes: Lower caffeine, lighter flavor
• 3--4 minutes: Standard caffeine level, balanced taste
• 5+ minutes: Higher caffeine, increased bitterness and astringency

3. Amount of Tea Leaves

More tea leaves means more caffeine. If you reduce the amount from 2 teaspoons to 1 teaspoon for two cups, you can cut caffeine by roughly 30 percent. The trade-off is a lighter tea flavor, which you can compensate for by adding more spices.

4. Milk-to-Water Ratio

More milk means proportionally less brewed tea in each cup, which lowers the caffeine concentration. A standard chai uses a 1:1 ratio of water to milk. To reduce caffeine, try increasing the milk portion -- for example, 2/3 cup milk to 1/3 cup water (about 160 ml milk to 80 ml water per serving).

5 Ways to Reduce Caffeine in Your Chai

Method 1: Switch Your Tea Base

The simplest approach. Swapping Assam CTC for rooibos eliminates caffeine entirely. Roasted green tea (hojicha) is another excellent lower-caffeine option that adds a toasty, nutty dimension to chai. See our Hojicha Chai Recipe for a unique twist.

Method 2: Shorten the Brewing Time

Since caffeine extracts over time, reducing your simmer time to 1--2 minutes keeps caffeine low while preserving the tea's essential character.

Method 3: Increase the Milk Ratio

Using a higher proportion of milk (for example, 2/3 cup milk to 1/3 cup water) dilutes the caffeine while creating a creamier, more velvety texture.

Method 4: Use a "Rinse" Technique

Pour hot water over your tea leaves and let them sit for about 30 seconds, then discard that water. Brew your chai with the rinsed leaves. This technique can remove approximately 30 to 40 percent of the caffeine while leaving most of the flavor compounds intact. The resulting chai will be slightly milder, but the spices more than compensate.

Method 5: Use Decaffeinated Tea Leaves

Decaf black tea is now widely available, including decaf Assam varieties that work well in chai. This lets you enjoy the familiar flavor of black tea chai with almost zero caffeine.

Caffeine-Free Chai Recipe: Rooibos Chai

For a completely caffeine-free chai experience, rooibos is an excellent base. It has a naturally sweet, slightly nutty flavor that pairs beautifully with traditional chai spices.

Ingredients (makes 2 cups / 16 oz)

• Water: 1 cup (240 ml)
• Whole milk or oat milk: 1 cup (240 ml)
• Rooibos tea: 2 tablespoons loose leaf
• Cinnamon: 1/2 stick
• Cardamom: 3 pods, crushed
• Fresh ginger: 2 thin slices
• Cloves: 1 whole
• Honey or sweetener: to taste

Instructions

1. Combine water, rooibos, and all spices in a small saucepan
2. Bring to a gentle boil, then reduce heat and simmer for 4--5 minutes
3. Add milk and heat until just simmering (do not boil)
4. Strain into cups and sweeten to taste

Rooibos is also rich in antioxidants and minerals, making it a health-conscious choice. For the full recipe with variations, see our Rooibos Chai Recipe.

When to Drink Each Type of Chai

Matching your chai to the time of day is a smart way to enjoy the benefits of caffeine without the downsides:

• Morning: Full-strength Assam CTC chai for a focused, energizing start
• Afternoon: Roasted green tea (hojicha) chai for a gentle, sustained lift
• Evening: Rooibos or herbal chai for relaxation without sleep disruption

For more evening chai ideas, check out our Evening Relaxation Chai article.

Find Your Ideal Caffeine Balance

At ChaiHolic, our Taste Diagnosis takes your caffeine preferences into account alongside your flavor profile to recommend personalized blends. Whether you want a bold morning chai or a soothing caffeine-free nightcap, we can help you find the perfect cup.

Visit our Order Page to explore caffeine-free base options.

FAQ

Does chai have more caffeine than green tea?

Yes, typically. A standard cup of chai made with Assam black tea contains about 30--50 mg of caffeine, while green tea has about 20--30 mg per cup. However, if you make chai with a green tea or rooibos base, the caffeine content can be equal to or lower than regular green tea.

Can I drink chai before bed?

It depends on your caffeine sensitivity. Standard chai with black tea contains enough caffeine to affect sleep for many people. For evening drinking, switch to rooibos chai (zero caffeine) or decaf tea-based chai. A general guideline is to avoid caffeinated beverages 4 to 6 hours before bedtime.

Is the caffeine in chai different from coffee caffeine?

The caffeine molecule is identical, but the experience can differ. Black tea contains L-theanine, an amino acid that promotes calm alertness and may moderate the jittery effects some people feel from coffee. Many chai drinkers report a smoother, more sustained energy boost compared to the sharper spike and crash associated with coffee.

References

• Caffeine Content for Coffee, Tea, Soda and More - Mayo Clinic
• Scientific Opinion on the Safety of Caffeine - EFSA Journal
• Tea and Health - Harvard T.H. Chan School of Public Health
• L-Theanine and Caffeine - Nutritional Neuroscience