Does Green Tea Have Caffeine? Amount, Benefits, Side Effects & Best Time to Drink
Green tea has a lighter taste than many black teas and usually contains much less caffeine than coffee—but it is not caffeine-free. The amount in your cup depends on the variety, leaf quantity, serving size, water temperature and brewing time.
Does Green Tea Have Caffeine?
Yes—green tea naturally contains caffeine because it comes from the caffeine-producing tea plant, Camellia sinensis.
A normal brewed cup often contains approximately 20–50 mg of caffeine per 8 ounces, although published testing has found values outside this range.
Matcha commonly provides more caffeine per prepared serving because you consume powdered tea leaf rather than steeping and removing the leaves.
Visual Chart: Sencha vs. Jasmine vs. Matcha Caffeine
The ranges below are practical serving-level estimates rather than guaranteed values. Sencha and Jasmine Green Tea overlap because Jasmine Green Tea normally uses a brewed green-tea base. Matcha is usually higher because the powdered leaf is consumed.
Estimated Caffeine per Prepared Serving
Approximate milligrams per cup or typical prepared serving. Scale: 0–80 mg.
Sencha and Matcha ranges summarize typical serving estimates from published tea research. The Jasmine range is Danfe Tea’s current estimate for 22° Nepal Jasmine Green Tea. Powder amount, leaf quantity and brewing method can move a serving outside these ranges.
| Green Tea Variety | Estimated Caffeine | How It Is Prepared | Important Context |
|---|---|---|---|
| Sencha | Approximately 20–35 mg per 8 oz | Leaves are steeped and removed | Leaf amount, cultivar and temperature change the result |
| 22° Jasmine Green Tea | Approximately 25–35 mg per 8 oz | Jasmine-scented green tea leaves are steeped | The jasmine blossoms do not remove caffeine from the green-tea base |
| Matcha | Often approximately 35–70 mg per serving | Powdered leaf is whisked into water and consumed | The powder quantity can change caffeine substantially |
Do not treat category ranges as laboratory guarantees. Published testing of brewed white, green and black teas found values ranging from 14–61 mg per serving, with no reliable caffeine ranking based only on the tea category.
How Much Caffeine Is in Green Tea?
A practical reference range for ordinary brewed green tea is approximately 20–50 mg per 8-ounce cup.
The number can vary considerably. Laboratory testing of six green-tea brands prepared in 235 milliliters of water found approximately 21–29 mg of caffeine in the regular products tested. Another study examining assorted commercial teas found a much broader 14–61 mg range across white, green and black teas.
Therefore, the most accurate answer is:
- Green tea contains caffeine.
- It usually contains less caffeine than brewed coffee.
- It cannot be assigned one universal milligram number.
- The product and brewing method matter more than the word “green.”
Why Does Green Tea Naturally Contain Caffeine?
Caffeine is naturally produced by the tea plant. It is not normally added during green-tea processing.
Green, black, white, oolong, yellow and pu-erh tea all originate from Camellia sinensis. Their processing differs, but the leaves naturally contain caffeine before they are harvested.
The same leaves also contain:
- Catechins, including EGCG
- L-theanine
- Other amino acids
- Polyphenols
- Aromatic compounds
These compounds contribute to the tea’s flavor, aroma, astringency and overall drinking experience. Their presence does not make every green tea produce the same physical response.
How Much Caffeine Is in Sencha?
Sencha commonly provides approximately 20–35 mg per 8-ounce serving, but that figure is an estimate rather than a universal standard.
Sencha caffeine changes according to:
- The cultivar
- The age of the harvested leaves
- The amount of leaf used
- The water-to-leaf ratio
- The brewing temperature
- The steeping time
Young leaf material may contain more caffeine than older, more mature leaves. A strong Sencha can therefore overlap with other green teas rather than always occupying a fixed low-caffeine category.
Does Jasmine Green Tea Have Caffeine?
Yes. Jasmine Green Tea contains caffeine because its base is green tea.
Jasmine tea is a scented-tea style rather than a caffeine-free tea category. Green tea leaves are traditionally scented or blended with jasmine blossoms, but the flowers do not remove caffeine from the leaves.
Danfe Tea estimates that 22° Nepal Jasmine Green Tea contains approximately 25–35 mg per 8-ounce cup when prepared as directed.
Pure jasmine flowers steeped without green, white, black or oolong tea would be an herbal infusion and would not naturally contain tea caffeine. Always check the ingredient list.
Quick distinction: “Jasmine Green Tea” is caffeinated. A product made only from jasmine flowers is an herbal infusion. The name “jasmine tea” alone does not reveal the caffeine level—you need to identify the base.
Does Matcha Have More Caffeine Than Green Tea?
Matcha often contains more caffeine per prepared serving than steeped green tea.
With ordinary green tea, the leaves are infused and removed. With Matcha, finely powdered tea leaf is whisked into the drink and consumed.
Published examples demonstrate why a single number is unreliable:
- One analysis listed about 43.5 mg in a 1.5-gram serving of Matcha.
- A separate clinical trial used 2.7 grams containing about 71.5 mg.
- Research examining different Matcha products found a broad range influenced by origin and composition.
The practical lesson is to check how many grams of powder are used rather than assuming every Matcha latte has the same caffeine.
What Affects Green Tea Caffeine Content?
1. Leaf Quantity
More tea leaf or Matcha powder generally provides more caffeine for extraction or consumption.
2. Serving Size
A 16-ounce drink may contain more total caffeine than an 8-ounce cup even when the concentration is similar.
3. Water Temperature
Hotter water generally extracts caffeine more rapidly, although flavor compounds and bitterness also change.
4. Steeping Time
Longer contact usually extracts more caffeine, but the amount cannot be calculated precisely at home.
5. Leaf Age and Cultivar
Tea genetics and the maturity of harvested leaves influence their natural caffeine concentration.
6. Leaf Size
Smaller or broken leaves expose more surface area and may infuse more quickly than large whole leaves.
7. Growing and Harvest Conditions
Season, shade, climate and agricultural practices can influence tea chemistry.
8. Preparation Style
Steeping leaves, cold brewing and consuming powdered Matcha create different caffeine results.
Does Loose-Leaf Green Tea Have Less Caffeine Than Tea Bags?
Not automatically.
Tea bags often contain smaller particles that extract quickly, but loose-leaf caffeine still depends on the amount of tea used and how it is brewed. Loose leaf should be chosen primarily for ingredient visibility, control and flavor—not because it guarantees less caffeine.
Does High-Altitude Green Tea Have More Caffeine?
Elevation alone cannot reliably predict caffeine.
High-elevation cultivation can influence aroma, growth rate and flavor development, but cultivar, leaf maturity, processing and preparation also affect caffeine. A product-specific estimate is more useful than a general altitude claim.
Green Tea Caffeine vs. Coffee
Equal-size brewed coffee usually contains considerably more caffeine than green tea.
| Beverage | General Caffeine Reference | Main Difference |
|---|---|---|
| Brewed green tea | Often around 20–50 mg per 8 oz | Tea caffeine varies by leaf and brewing |
| Matcha | Often around 35–70 mg per serving | Powder quantity determines much of the result |
| Brewed coffee | FDA lists 113–247 mg per 12 oz | Usually provides substantially more caffeine |
Green tea may be useful for someone reducing caffeine, but it is not caffeine-free and does not guarantee an absence of jitters, anxiety or disrupted sleep.
Read the broader comparison: Tea vs. Coffee Caffeine .
Does Black Tea Always Have More Caffeine Than Green Tea?
No. Black tea often has more caffeine in typical beverage databases, but the ranges overlap.
A strongly brewed green tea can contain more caffeine than a lightly brewed black tea. Matcha can also rival or exceed some black-tea servings.
Oxidation does not create a simple caffeine ranking. The specific leaf and preparation determine the final cup.
Why Can Green Tea Feel Different From Coffee?
Green tea naturally contains L-theanine as well as caffeine.
Human research has studied caffeine and L-theanine together for effects on attention and selected aspects of cognitive performance. Some studies report modest effects, but the combination does not guarantee:
- “Crash-free” energy
- No jitters
- Permanent concentration improvement
- Relief from anxiety
- The same experience for every drinker
Personal response depends on dose, sleep, food intake, medication and caffeine sensitivity.
Can Green Tea Keep You Awake?
Yes. Green tea can disrupt sleep in caffeine-sensitive people.
You may be more likely to notice an effect when:
- You drink it late in the day.
- You use a large serving.
- You drink Matcha or strongly brewed tea.
- You consume coffee or other caffeine as well.
- You metabolize caffeine slowly.
- You already have difficulty sleeping.
Morning or early afternoon is usually the more practical time for caffeinated green tea. A naturally caffeine-free herbal tea may be more suitable later in the evening.
How to Reduce Caffeine in Green Tea
Brewing adjustments may reduce caffeine, but they cannot reliably make regular green tea caffeine-free.
Ways to Use Less Caffeine
- Use fewer leaves.
- Choose a smaller serving.
- Use a shorter controlled steep.
- Avoid adding extra Matcha powder.
- Limit the number of infusions you drink.
- Drink green tea earlier in the day.
When You Need Caffeine-Free Tea
- Choose pure spearmint.
- Choose pure lemongrass.
- Choose pure chamomile.
- Choose pure hibiscus.
- Check that no green or black tea is added.
- Check for mate, guayusa or yaupon.
Do not rely on rinsing the leaves. Discarding a short first infusion does not reliably remove all—or even most—of the caffeine. Choose decaffeinated or naturally caffeine-free tea when strict reduction matters.
Is Decaffeinated Green Tea Caffeine-Free?
Not necessarily. Decaffeinated green tea normally contains much less caffeine, but a small residual amount may remain.
Published testing of commercial decaffeinated teas found less than 12 mg per serving in the products studied.
Check the label or contact the manufacturer when even a small amount matters.
Does Green Tea Dehydrate You?
Green tea does not usually cause dehydration when consumed in ordinary amounts. It contains caffeine, but it also provides fluid and generally contributes to daily water intake.
Read the complete explanation: Does Green Tea Dehydrate You?
How Much Green Tea Can You Drink Per Day?
There is no universal cup count that suits every adult because green-tea caffeine varies.
FDA cites 400 mg of total daily caffeine as an amount not generally associated with negative effects for most adults. This is a maximum reference—not a target.
Consider:
- Caffeine from coffee and other teas
- Energy drinks
- Chocolate
- Supplements and medicines
- Pregnancy
- Sleep quality
- Anxiety or palpitations
- Individual medical advice
Reduce caffeine when it causes symptoms. Possible signs of excessive intake include insomnia, restlessness, anxiety, headache, nausea, digestive discomfort and a racing or irregular heartbeat.
How to Brew Green Tea Without Excessive Bitterness
Measure the Leaves
Start with approximately 2–3 grams of loose-leaf green tea per 8 ounces of water.
Use Cooler Water
Begin around 170–180°F rather than pouring fully boiling water onto delicate leaves.
Steep Briefly
Start with two minutes and taste before extending the infusion.
Remove the Leaves
Strain completely so the tea does not continue extracting and become overly astringent.
Change One Variable
Use the Danfe Method to adjust leaf quantity, temperature or time one step at a time.
Explore the detailed green tea steeping and temperature guide .
Floral aroma with moderate green-tea caffeine
22° Nepal Jasmine Green Tea
High-elevation Himalayan green tea is delicately scented with natural jasmine blossoms for a clean golden-green cup, elegant floral aroma and long, lightly sweet finish.
- Loose-leaf green-tea blend from Ilam, Nepal
- Natural jasmine blossoms
- No artificial jasmine fragrance
- Estimated 25–35 mg caffeine per 8-ounce cup
- Suggested water temperature: 175–180°F
- Suggested steeping time: two to three minutes
- Suitable for two infusions
- Available as a one-time purchase or subscription
Best for: shoppers looking to buy Jasmine Green Tea online, find a floral loose-leaf green tea or replace artificial-tasting jasmine tea with a high-elevation Himalayan blend.
This product naturally contains caffeine because it uses a green-tea base. Its caffeine amount is an estimate rather than a laboratory guarantee.
How to Choose the Best Loose-Leaf Green Tea Online
When searching for the best green tea to buy online, do not choose only by a generic promise of low caffeine or antioxidants.
Look for:
- A clear tea style: pure green tea, Jasmine Green Tea, Matcha or another blend
- Specific origin: including the country and growing region
- A realistic caffeine description: ranges or estimates rather than false precision
- Visible loose-leaf quality: recognizable leaves rather than unidentified dust
- Complete ingredients: especially for flavored and floral teas
- Brewing guidance: leaf quantity, temperature and steeping time
- Packaging: protection from moisture, heat, light and air
- Purchase flexibility: personal sizes, larger quantities or subscription options
- Reasonable claims: avoid green teas promising guaranteed focus, weight loss or disease treatment
Transactional phrases used naturally in this guide include:
- Buy Jasmine Green Tea online
- Premium loose-leaf green tea
- Best Himalayan green tea
- Floral green tea online
- Organic loose-leaf green tea
- Green tea subscription
- Low-caffeine tea alternative
- Nepal green tea collection
Commercial keywords should appear where they help readers compare or purchase products—not as repeated phrases in unrelated paragraphs.
Frequently Asked Questions
Does green tea have caffeine?
Yes. Green tea naturally contains caffeine because it comes from Camellia sinensis.
How much caffeine is in an 8-ounce cup of green tea?
Many cups contain approximately 20–50 mg, but published commercial-tea testing has found a wider range.
Is green tea caffeine-free?
No. Regular green tea naturally contains caffeine. Decaffeinated green tea may still retain a small amount.
Does Sencha have caffeine?
Yes. A practical estimate is approximately 20–35 mg per 8-ounce cup, but the leaf and brewing method can move the result outside that range.
Does Jasmine Green Tea have caffeine?
Yes. Jasmine Green Tea contains caffeine from its green-tea base. Danfe’s 22° Nepal Jasmine Green Tea is estimated at approximately 25–35 mg per 8-ounce cup.
Do jasmine flowers contain caffeine?
Jasmine blossoms do not supply the caffeine in Jasmine Green Tea. The caffeine comes from the green, white, black or oolong tea used as the base.
Does Matcha have more caffeine than Sencha?
Matcha commonly contains more caffeine per serving because the powdered leaf is consumed. The actual amount depends heavily on how many grams are used.
Does green tea have less caffeine than coffee?
Usually, yes. Brewed coffee generally contains considerably more caffeine than equal-size brewed green tea.
Does black tea always have more caffeine than green tea?
No. Typical averages may be higher for black tea, but the ranges overlap and preparation can reverse the comparison.
Can green tea keep you awake?
Yes. Green tea may disrupt sleep in caffeine-sensitive people, particularly when consumed late or brewed strongly.
Can I drink Jasmine Green Tea at night?
It contains caffeine, so an evening cup may affect sleep. Caffeine-sensitive people may prefer it in the morning or afternoon.
Does shorter steeping reduce green-tea caffeine?
A shorter steep may extract less caffeine, but the drink remains caffeinated and the reduction cannot be calculated accurately at home.
Can I remove caffeine by rinsing green tea?
A quick rinse does not reliably decaffeinate tea. Choose a decaffeinated product or naturally caffeine-free herbal infusion.
Does iced green tea contain caffeine?
Yes. Chilling or adding ice does not remove caffeine from brewed green tea.
Does cold-brew green tea contain caffeine?
Yes. Cold water extracts caffeine more slowly, but a long cold brew still contains caffeine.
Does green tea dehydrate you?
Green tea does not usually cause dehydration in ordinary amounts. It contributes fluid despite caffeine’s mild diuretic effect.
Where can I buy Jasmine Green Tea online?
Danfe Tea offers 22° Nepal Jasmine Green Tea , a loose-leaf Himalayan green tea scented with natural jasmine blossoms.
Can I subscribe to Jasmine Green Tea deliveries?
The current 22° Nepal Jasmine Green Tea product page offers one-time and recurring subscription purchase options. Review the product page for current sizes and terms.
Key Takeaways
- Green tea naturally contains caffeine.
- Many brewed green teas contain approximately 20–50 mg per 8 ounces.
- Published commercial-tea values vary more widely.
- Sencha commonly provides moderate caffeine.
- Jasmine Green Tea remains caffeinated because it uses a green-tea base.
- Danfe’s 22° Jasmine Green Tea is estimated at 25–35 mg per cup.
- Matcha often contains more caffeine because the powdered leaf is consumed.
- The amount of Matcha powder has a major effect on caffeine.
- Green tea generally contains less caffeine than brewed coffee.
- Black- and green-tea caffeine ranges can overlap.
- Shorter brewing may reduce caffeine but does not eliminate it.
- Green tea can disrupt sleep in sensitive people.
- Green tea generally contributes to daily fluid intake.
Natural jasmine. Himalayan green tea. No artificial perfume.
Discover Floral Green Tea From Nepal
Experience high-elevation loose-leaf green tea layered with natural jasmine blossoms for a clean, aromatic cup with moderate caffeine and a long floral finish.
Continue Exploring Green Tea
Research and Data Sources
- PubMed: Caffeine Content of Commercial Brewed Teas
- Research: Caffeine in Commercial Green-Tea Infusions
- Research: Matcha and Sencha Composition per Serving
- PubMed: Matcha Serving With Measured Caffeine Content
- FDA: Caffeine Amounts and Daily Intake
This article is provided for educational purposes and is not medical advice. Green tea, Jasmine Green Tea, Matcha and Danfe Tea products are foods and beverages and are not intended to diagnose, treat, cure, mitigate or prevent any disease. Caffeine amounts vary according to product, leaf quantity, serving size and preparation. Consult a qualified healthcare professional about pregnancy, breastfeeding, medication use, heart conditions, sleep problems or significant caffeine sensitivity.
