Tea Caffeine Calculator

Find out exactly how much caffeine is in your cup, along with health insights and nutrition data.

Configure Your Brew

Tea Type

Fully oxidized — bold, robust flavor with the highest caffeine among traditional teas.

Tea Amount 1 tsp ≈ 2–3g

grams

Brew Time Longer = more caffeine

minutes

Water Temperature

Cups per Day For daily intake estimate

cups

mg caffeine

⏳ Awaiting Input

Black Tea

—

mg per gram

—

of daily limit

—

max cups/day

Daily Caffeine Limit (400mg) 0%

☕

—

Caffeine / cup

🛡️

—

Antioxidants

🧘

—

L-Theanine

🔥

—

Calories / cup

🌿

—

Polyphenols

📅

—

Daily Total

Health Insights

Configure your brew and click Calculate Caffeine to see health insights.

Caffeine Comparison

Your Tea

0mg

Espresso

63mg

Drip Coffee

95mg

Energy Drink

80mg

Daily Limit

400mg

Nutrition Per Gram (dry leaf)

Calculate to see detailed nutrition data.