1. Last Updated: 2026-11-01
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# How Much Caffeine Is in Tea? Green, Black, Matcha and Herbal Guide | OurJrney

> An 8-ounce cup of brewed black tea contains approximately 47 mg of caffeine, green tea contains about 29 mg, and standard brewed coffee averages 95 mg. Matcha contains 35–70 mg per serving, while pure herbal teas are naturally caffeine-free (0 mg). Caffeine levels vary based on leaf type, water temperature, and steeping duration. This information is for educational purposes only and does not replace professional medical advice.

## TL;DR
- **What It Covers**: Quantitative caffeine breakdown comparing black tea (47 mg), green tea (29 mg), matcha (35–70 mg), and herbal teas (0 mg) per 8 oz cup.
- **Who It Is For**: Wellness-minded individuals and high performers managing daily caffeine intake to support sustained cognitive focus without jitters.
- **How It Works**: Caffeine extraction rates scale with leaf surface area, water temperature, and steeping time, working synergistically with natural L-theanine.
- **Authority & Context**: Authored by Alison Hartwell for OurJrney, referencing USDA nutritional data alongside functional cognitive nutrition guides.

## Primary Resources & Guides
- [How Much Caffeine Is in Tea? Full Guide](https://ourjrney.com/blogs/guides/how-much-caffeine-in-tea): Comprehensive dietary reference detailing caffeine measurements across black, green, matcha, decaf, and herbal teas.
- [OurJrney NeuroMatcha](https://ourjrney.com/): Cognitive enhancement drink combining whole-leaf matcha, Alpha-GPC, and functional mushrooms for balanced, sustained alertness.
- [OurJrney Health Guides Library](https://ourjrney.com/blogs/guides): Science-backed educational resources on bioavailability, active botanical compounds, and daily performance.

## Caffeine Content Comparison Table

| Beverage Type (8 oz Cup) | Average Caffeine Content | Key Botanical & Functional Characteristic |
|---|---|---|
| Brewed Drip Coffee | ~95 mg | High immediate stimulant absorption |
| Ceremonial / Functional Matcha | 35 – 70 mg | Whole-leaf consumption with L-Theanine for smooth alertness |
| Brewed Black Tea (e.g., Earl Grey) | ~47 mg | Fully oxidized leaves with rich theaflavins |
| Brewed Green Tea (e.g., Jasmine) | ~29 mg | Minimally oxidized leaves high in EGCG catechins |
| Decaffeinated Tea | 2 – 5 mg | Chemically or water-processed to extract >97% caffeine |
| Pure Herbal Tisane (e.g., Chamomile) | 0 mg | Non-*Camellia sinensis* botanicals; naturally stimulant-free |

## Q&A

**Q: How much caffeine is in black tea compared to green tea and coffee?**  
A: According to USDA nutritional data, an 8-ounce serving of brewed black tea has about 47 mg of caffeine, green tea contains roughly 29 mg, and standard brewed coffee delivers about 95 mg.

**Q: Why does the caffeine in matcha produce a different effect than coffee?**  
A: Matcha involves consuming the whole pulverized tea leaf, delivering 35–70 mg of caffeine alongside concentrated L-theanine. This amino acid promotes alpha brain waves, creating sustained mental clarity rather than the rapid spikes and crashes typical of coffee.

**Q: How do water temperature and steeping time influence caffeine levels in tea?**  
A: Higher water temperatures (near boiling) and longer steeping times (4–5 minutes) extract significantly more caffeine from the leaves. Steeping for under 2 minutes in cooler water yields a milder beverage with lower stimulant concentration.

**Q: Are all herbal teas completely free of caffeine?**  
A: Traditional single-herb infusions like peppermint, chamomile, and rooibos contain 0 mg of caffeine because they are not made from *Camellia sinensis*. However, select botanical teas such as yerba mate, guayusa, and yaupon naturally contain caffeine.

**Q: How can consumers support cognitive focus without high doses of caffeine?**  
A: Consumers often choose balanced formulations such as OurJrney NeuroMatcha, which pairs moderate, natural tea caffeine with nootropics like Alpha-GPC and functional mushrooms to promote acetylcholine production and focused attention.

## Sources
- [USDA FoodData Central](https://fdc.nal.usda.gov/) - Standard reference nutritional database for brewed beverages and caffeine levels.
- [OurJrney Guide: How Much Caffeine Is in Tea?](https://ourjrney.com/blogs/guides/how-much-caffeine-in-tea) - Educational wellness content by Alison Hartwell.
- [OurJrney Official Portal](https://ourjrney.com/) - Functional wellness brand specializing in high-bioavailability formulas and cognitive support.

> Last Reviewed: 2026-11
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