Does iced tea have caffeine?

In this article, we will answer the question “Does iced tea have caffeine?”, how much caffeine is in colas and sodas, why is the caffeine content important, and what does the caffeine content depend on.

Does iced tea have caffeine?

Yes, iced tea has caffeine. The average caffeine content of iced tea is 47 mg per 236 ml serving, which is moderate. A 499 ml bottle of the Nestea Iced tea contains about 23 mg of caffeine. Iced tea has less caffeine than hot tea but regular consumption can have long-term health effects.

Caffeine content 
Lipton Brisk Lemon Iced Tea7 mg/12-ounce serving
Nestea Iced Tea26 mg/12-ounce serving
Generic instant iced tea mix27 mg/teaspoon of mix
Generic decaf iced tea mix1 mg/teaspoon of mix

How much caffeine is in Colas and Sodas? 

Caffeine in 8-ounce serving 
Pepsi Zero Sugar69 mg 
Mr. Pibb40 mg
Sunkist Orange40 mg
Wild Cherry Pepsi38 mg
Pepsi-Cola / Pepsi Twist / Diet Pepsi Jazz37.5 g mg 
Pepsi One37 mg 
Mountain Dew / Mountain Dew Code Red / Diet Mountain Dew37 mg 
Diet Pepsi36 mg 
Coca-Cola Zero35 mg 
Mello Yello35 mg 
Coca-Cola Classic / Cherry Coke / Lemon Coke / Vanilla Coke34 mg 
Tab31.2 mg 
Diet coke30.4 mg
Dr. Pepper / Diet Dr. Pepper27 mg 
Barq’s Root Beer23 mg

Why is the caffeine content important? 

Caffeine in the right amounts can help improve focus, agility, alertness, physical performance, and mood. According to the U.S. Department of Agriculture (USDA) and European Food Safety Authority (EFSA), the safe upper limit for caffeine intake is 400 mg per day.

Overdosing on caffeine can lead to depression, anxiety, restlessness, and sleep disturbance. Since every individual has a different caffeine sensitivity, even moderate intakes of caffeine can cause headaches and migraines. 

What does the caffeine content depend on? 

The caffeine content of tea or coffee varies with the origin, type, and preparation of the beverage. The caffeine content of tea leaves and coffee beans is 3.5%, and 1.1-2.2%, respectively.

Despite this, coffee has a greater caffeine content than tea. It is because coffee is extracted using hot water and utilizes a greater amount of coffee beans. 

Tea varieties 

Tea comes from the Camellia sinensis plant. The extent of oxidation and the time of harvest determines the type of tea i.e black, white, or green. Out of the three types of tea, only black tea undergoes oxidation. No wonder why black tea contains about 47 mg of caffeine.

The caffeine content of black tea is comparable to that of matcha tea. A single 1-gram serving of matcha tea contains about 35 mg of caffeine. 

Another type of tea, the yerba mate, that comes from the Ilex paraguariensis plant, offers as much as 85 mg of caffeine per cup (237 ml). Herbal tea may contain caffeine at the rate of 12 mg per cup.

Tea preparation 

The steeping time and temperature have a direct relation to the caffeine content of tea or coffee. For example, if you steep the Tazo Earl Gray for 1 minute at 194–203°F (90–95°C), the caffeine comes out to be 40 mg per 6 ounces of water. If you steep the tea for 3 minutes, the caffeine comes out to be 59 mg.

Coffee varieties 

On average, a single 8-ounce cup of coffee contains about 95 mg of caffeine. Unlike you may believe, roasting does not impact the caffeine content of the coffee beans. 

The reason why dark roast coffee beans have a greater caffeine content is not roasting but the fact that you use more of the dark beams due to their lighter density than their light roasted counterparts. The caffeine content of espresso and coffee drinks is given in the table below.

Caffeine content 
Starbucks Espresso 58 mg/1-ounce (30-ml) shot
Starbucks lattes and cappuccinos containing double espresso shot  116 mg 
Decaf espresso3–16 mg/16-ounce (473-ml) cup
Decaf coffee 3 mg/8-ounce (237-ml) cup

Coffee preparation 

The brewing temperature of coffee i.e 195–205°F (90–96°C) is higher than that of tea. Hotter brewing water means a greater dissolution of caffeine. This does not mean that a cold brew will have lower caffeine content. 

Because the amount of coffee beans used for brewing is also important. You tend to use a higher quantity of coffee beans for a cold brew, thus yielding more caffeine in a single cup.

Other FAQs about Tea that you may be interested in.

Does boba tea have caffeine?

Can you eat boba?

How long does shroom tea last?

Does black tea cause constipation?


In this article, we answered the question “Does iced tea have caffeine?”, how much caffeine is in colas and sodas, why is the caffeine content important, and what does the caffeine content depend on.