How Much Caffeine Is in Black Tea? The Complete Guide
Black tea is one of the world's most caffeinated beverages — but how much caffeine is actually in your cup? The answer varies significantly based on tea variety, steep time, water temperature, and leaf grade. Here's the complete breakdown.
Average Caffeine in Black Tea
A standard 8 oz cup of brewed black tea contains approximately 47–90 mg of caffeine. That's roughly half the caffeine of a standard drip coffee (80–100 mg), making black tea an excellent choice for people who want a meaningful caffeine lift without the intensity of coffee.
Caffeine by Black Tea Variety
| Black Tea Variety | Caffeine per 8 oz |
|---|---|
| Assam (robust Indian) | 60–90 mg |
| Ceylon (Sri Lankan) | 50–75 mg |
| Earl Grey (bergamot black) | 40–70 mg |
| Darjeeling | 40–70 mg |
| English Breakfast (blend) | 60–90 mg |
| Masala Chai (spiced black) | 50–70 mg |
Black Tea Caffeine vs. Other Drinks
| Drink (8 oz) | Caffeine |
|---|---|
| Drip Coffee | 80–120 mg |
| Black Tea (avg) | 47–90 mg |
| Green Tea | 20–45 mg |
| White Tea | 15–30 mg |
| Yerba Mate | 65–85 mg |
| Herbal Tea (rooibos, chamomile, etc.) | 0 mg |
What Affects Caffeine Levels in Black Tea?
- Steep time: The longer you steep, the more caffeine extracts. 3 minutes extracts ~50% of available caffeine; 5 minutes extracts ~70%+.
- Water temperature: Hotter water extracts caffeine faster — boiling water on a high-caffeine Assam will produce a more caffeinated cup than 190°F water on the same tea.
- Leaf grade: Dust and fannings (used in most tea bags) have higher surface area and release caffeine faster and more completely than whole-leaf teas.
- Tea origin: High-altitude teas (Darjeeling, Ceylon high-grown) tend to have lower caffeine than low-grown robust teas (Assam, CTC English Breakfast).
Does Rinsing Remove Caffeine?
The popular belief that a 30-second "rinse steep" removes most caffeine is largely a myth. Studies show that only about 9–15% of caffeine is released in the first 30 seconds. If you're sensitive to caffeine, your best option is to switch to a naturally caffeine-free herbal tea.
Our Black Teas — Organic, Full-Flavor, Dog-Themed
Browse our Black Teas collection — from the bergamot elegance of Earl Greyhound to the bold spice of Chai-huahua Spice and the smooth Ceylon of Orange Pooch-koe. All organic, all delicious, all supporting dog rescue.
Prefer caffeine-free? Our Caffeine-Free collection has you covered.