Tea Steeping Time Calculator Formula

Understand the math behind the tea steeping time calculator. Each variable explained with a worked example.

Use the Tea Steeping Time Calculator

Formulas Used

Steeping Time

steep_minutes = round(tea_type * format * 10) / 10

Total Tea Needed

total_tea = cups * tea_grams_per_cup

Total Water

total_water = cups * 237

Tea (teaspoons)

tea_tsp = cups * tea_grams_per_cup / 2.5

Variables

VariableDescriptionDefault
tea_typeTea Type4
formatTea Format1
cupsNumber of Cups (8 oz)2
tea_grams_per_cupTea per Cup(grams)3

How It Works

How to Calculate Tea Steeping Time

Guidelines by Tea Type

TeaTemperatureTime Green165-180°F1.5-3 min White175-185°F2-4 min Oolong185-205°F2-4 min Black200-212°F3-5 min Herbal212°F5-7 min

Key Principles

  • Temperature matters more than time. Green tea becomes bitter in boiling water regardless of steeping time.
  • Loose leaf tea generally needs 1 teaspoon (2-3 g) per cup with room to expand.
  • Tea bags steep slightly faster because the leaf is cut smaller, increasing surface area.
  • Multiple infusions: Oolong and pu-erh can be steeped 3-5 times, adding 30 seconds each round.

    • Worked Example

    2 cups of loose-leaf black tea at 3 g per cup.

    tea_type = 4format = 1cups = 2tea_grams_per_cup = 3
    1. 01Steeping time = 4 x 1 = 4 minutes
    2. 02Total tea = 2 x 3 = 6 g (about 2.4 tsp)
    3. 03Total water = 2 x 237 = 474 mL
    4. 04Use boiling water (212°F) for black tea.

    Frequently Asked Questions

    Why is my green tea bitter?

    Green tea becomes bitter when steeped in water that is too hot (above 180°F) or for too long (over 3 minutes). Let boiling water cool for 2-3 minutes before pouring, or use a thermometer. Steep for 1.5-2 minutes initially.

    How do I measure water temperature without a thermometer?

    After boiling, let water sit: 1 minute for about 200°F, 3 minutes for about 185°F, 5 minutes for about 175°F. These are rough estimates and vary by container and room temperature.

    Can I reuse tea leaves?

    Yes. High-quality loose leaf tea, especially oolong, pu-erh, and white tea, can be steeped multiple times. Each infusion reveals different flavors. Add 15-30 seconds to each subsequent steeping.

    Ready to run the numbers?

    Open Tea Steeping Time Calculator