Caffeine in Earl Grey Tea
47 mg
per 8 oz cup Moderate
≈ 5.9 mg per fl oz
A respectable dose. The office approves.
Every serving size
| Serving | Caffeine | % of 400 mg day | Finish by (10:30 PM bed) |
|---|---|---|---|
| 8 oz cup (8 oz) | 47 mg | 12% | 10:30 PM |
Cutoff column: average metabolism (5 h half-life), ~50 mg bedtime threshold — run it with your bedtime →
How it compares
Earl Grey Tea 47 mg
Green tea (8 oz) 28 mg
Black tea (8 oz) 47 mg
Brewed coffee (8 oz) 96 mg
Monster (16 oz) 160 mg
Bang (16 oz) 300 mg
Roughly a standard cup of coffee's worth. Fine in the morning; for an average metabolizer, finish it a few hours before bed. At 47 mg per 8 oz cup, this drink is 12% of the FDA's 400 mg daily ceiling for healthy adults.
Black tea base plus bergamot — caffeine identical to plain black.
Source: USDA FoodData Central · confidence: medium
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Related reading: coffee vs tea vs energy drinks · when to stop before bed