How much caffeine is in teas?
We track 42 teas with caffeine figures from the brand, USDA FoodData Central, DailyMed or a published lab test.
The typical one has about 29 mg in its usual serving. Gyokuro is the strongest at 160 mg (100 ml, brewed); Decaf Tea is the mildest with caffeine at 4 to 6 mg.
Herbal Tea, Starbucks Iced Passion Tango Tea, Starbucks Mint Majesty Tea have no caffeine at all.
For an 11 pm bedtime, 37 of the 38 with caffeine can still be started at 3 pm or later by an average adult; 0 are too strong to fit into the same day at all.
Each page shows the sizes, how much is still in you at bedtime if you have one at 3 pm, and the latest time to drink it for your bedtime.
Tea, strongest first
| Serving | for an 11 pm bed | ||
|---|---|---|---|
| Gyokuro | 100 ml, brewed | 160 mg | 2:05 pm |
| Iced Tea | 1 medium drink (about 17 fl oz) | 99 mg | 5:35 pm |
| Sweet Tea | 1 medium drink (about 17 fl oz) | 92 mg | 6:05 pm |
| Bigelow American Breakfast Tea | 1 cup (size not stated) | 60 to 90 mg | 7:40 pm |
| Bigelow Peak Energy Plus | 1 cup (size not stated) | 75 mg | 7:40 pm |
| Chick-fil-A Iced Tea | Medium | 72 mg | 7:50 pm |
| Yerba Mate | 6 fl oz cup | 40 to 80 mg | 9:20 pm |
| Gold Peak Unsweetened Black Tea | 18.5 fl oz bottle | 50 mg | Any time |
| Matcha | 1 bowl (1.5 g in 70 ml), ITO EN | 48 mg | Any time |
| Yorkshire Tea | 200 ml mug, brewed 5 min | 48 mg | Any time |
| Black Tea | 8 fl oz cup | 47 mg | Any time |
| Dona Masala Chai Concentrate | 1 serving | 45 mg | Any time |
| Yorkshire Gold | 200 ml mug, brewed 5 min | 43 mg | Any time |
| Kombucha | 12 fl oz bottle | 41 mg | Any time |
| Starbucks Earl Grey Tea | Grande | 40 mg | Any time |
| Starbucks Royal English Breakfast Tea | Grande | 40 mg | Any time |
| Honest Tea Mint Green Tea | 16.9 fl oz bottle | 35 mg | Any time |
| Oolong Tea | 6 fl oz cup | 30 to 40 mg | Any time |
| Snapple Tea | 16 fl oz bottle | 30 mg | Any time |
| Green Tea | 8 fl oz cup | 28 mg | Any time |
| Jade Leaf Matcha | 1 serving, powder | 16 to 40 mg | Any time |
| Starbucks Iced Black Tea | Grande | 25 to 30 mg | Any time |
| Starbucks Iced Green Tea | Grande | 25 to 30 mg | Any time |
| Starbucks Iced Peach Green Tea | Grande | 25 to 30 mg | Any time |
| Gold Peak Chai Tea Latte | 14 fl oz bottle | 25 mg | Any time |
| Starbucks Chamomile Mint Blossom Tea | Grande | 25 mg | Any time |
| Gold Peak Sweet Tea | 16.9 fl oz bottle | 20 mg | Any time |
| Hojicha | 100 ml, brewed | 20 mg | Any time |
| Sencha | 100 ml, brewed | 20 mg | Any time |
| Starbucks Emperor's Clouds & Mist Tea | Grande | 16 to 25 mg | Any time |
| Starbucks Honey Citrus Mint Tea | Grande | 16 to 25 mg | Any time |
| Bubble Tea | 8 fl oz cup | 19 mg | Any time |
| White Tea | 6 fl oz cup | 15 to 20 mg | Any time |
| AriZona Arnold Palmer | 12 fl oz serving | 12 to 14 mg | Any time |
| Fuze Mango Green Tea | 16.9 fl oz bottle | 10 mg | Any time |
| AriZona Green Tea | 12 fl oz serving | 8 to 10 mg | Any time |
| GT's Synergy Kombucha | 8 fl oz serving | 4 to 8 mg | Any time |
| Decaf Tea | 8 fl oz cup | 4 to 6 mg | Any time |
| Yorkshire Tea Decaf | 200 ml mug, brewed 5 min | 1.5 to 2 mg | Any time |
| Herbal Tea | 8 fl oz cup | None | Any time |
| Starbucks Iced Passion Tango Tea | Grande | None | Any time |
| Starbucks Mint Majesty Tea | Grande | None | Any time |
"Finish by" is the latest time to start one serving so that an average adult is under 50 mg of caffeine from 11 pm through the night. Each product page has other bedtimes and sensitivity levels.