20 tea drinks, from herbal (caffeine-free) to matcha and strong black tea, ranked by caffeine per serving. Figures come from the manufacturer's own nutrition data, USDA FoodData Central or the product's official label, with the date each was last checked on the drink's own page.

Tea's caffeine range is wide: the strongest cup on this list carries several times the caffeine of the weakest. To see how tea fits into a full day of caffeine against your personal limit, use the caffeine calculator.

Tea, strongest to weakest

Drink Serving Caffeine Source
Iced tea, brewed black, unsweetened Small, 12 fl oz (355 ml) 72 mg USDA FoodData Central (FNDDS), iced tea, brewed, black, unsweetenedSource
Starbucks Matcha Latte Grande, 16 fl oz (473 ml) 65 mg Starbucks published nutritionSource
Starbucks Iced Matcha Latte Grande, 16 fl oz (473 ml) 65 mg Starbucks published nutritionSource
Starbucks Iced Chai Latte Grande, 16 fl oz (473 ml) 60 mg Starbucks published nutritionSource
Starbucks Chai Latte Grande, 16 fl oz (473 ml) 55 mg Starbucks published nutritionSource
Pure Leaf Unsweetened Black Tea Bottle, 18.5 fl oz (547 ml) 54 mg PepsiCo Product FactsSource
Black tea, brewed 8 fl oz (237 ml) 47 mg USDA FoodData Central, black tea brewed with tap waterSource
Bottled iced tea, black 16 fl oz (473 ml) 45 mg USDA FoodData Central (FNDDS), iced tea, bottled, blackSource
Kombucha 12 fl oz (355 ml) 41 mg USDA FoodData Central (FNDDS), tea, kombuchaSource
Starbucks London Fog Latte Grande, 16 fl oz (473 ml) 40 mg Starbucks published nutritionSource
Starbucks Royal English Breakfast Tea Grande, 16 fl oz (473 ml) 40 mg Starbucks published nutritionSource
Starbucks Earl Grey Tea Grande, 16 fl oz (473 ml) 40 mg Starbucks published nutritionSource
Oolong tea, brewed 8 fl oz (237 ml) 38 mg USDA FoodData Central, oolong tea, brewedSource
Bubble tea (boba) 1 drink 35 mg USDA FoodData Central (FNDDS), tea, bubbleSource
Starbucks Iced Green Tea Grande, 16 fl oz (473 ml) 25-30 mg Starbucks published nutritionSource
Starbucks Iced Black Tea Grande, 16 fl oz (473 ml) 25-30 mg Starbucks published nutritionSource
Green tea, brewed 8 fl oz (237 ml) 29 mg USDA FoodData Central, green tea, brewedSource
Starbucks Emperor's Clouds & Mist green tea Grande, 16 fl oz (473 ml) 16-25 mg Starbucks published nutritionSource
Decaf black tea, brewed 8 fl oz (237 ml) 2 mg USDA FoodData Central, decaffeinated black teaSource
Herbal tea (chamomile, peppermint and similar) 8 fl oz (237 ml) 0 mg USDA FoodData Central, herb tea, brewedSource