Tools / Brewing calculator

Repeatable preparation

Tea brewing calculator

Scale a profile’s starting leaf range to your vessel, then see the formula and reasoning behind the result.

What does the tea brewing calculator do?

It converts a tea profile’s leaf-to-water ratio to the amount your vessel actually holds, then shows the profile’s suggested temperature and steep time. Use it to reproduce a good cup or adapt a recipe to another mug, pot, or gongfu vessel.

Built from 55 tea profilesMethod updated 2026-08-28Calculator policy

Your setup

Use the actual water held by the vessel, not its advertised brim capacity.

Bancha starting recipe
3.3 g leaf250 ml water80°C / 176°F temperature1.5 min contact time

Brew once, taste, and change one variable if needed.

Read the Bancha guideSee Bancha buying picks

How the result is calculated

Tea-to-water ratio formula

leaf grams = reference leaf grams × vessel milliliters ÷ reference milliliters

Western profiles use a 250 ml reference and gongfu profiles use 100 ml. The lighter, middle, and stronger settings choose the low end, midpoint, or high end of the tea profile’s leaf, temperature, and time ranges. Water volume scales leaf mass; it does not automatically scale steep time or temperature.

Worked example: Sencha in a 400 ml pot

  1. Sencha’s Western leaf range is 2–3 g per 250 ml, so the middle starting point is 2.5 g.
  2. Scale the leaf: 2.5 × 400 ÷ 250 = 4.0 g.
  3. The middle of the listed 70–80°C range is 75°C, and the middle of 60–120 seconds is 90 seconds.
  4. Start with 4.0 g at 75°C for 90 seconds, then change only one variable after tasting.

From result to decision

How to interpret the result

Result patterns, what they mean, and the next useful action
ResultWhat it meansWhat to do next
Thin or wateryThe cup may need more soluble material or better heat retention.Check actual vessel volume, then add a little leaf before making a much longer steep.
Bitter or dryingContact time, temperature, dose, leaf material, or water may be pushing extraction.Shorten the next steep first; then try the cooler end of the listed range.
Balanced and aromaticThe current ratio is a useful personal baseline.Save or share the URL so the same setup is easy to repeat.

Inputs explained

Variables and definitions

Tea
The named tea profile that supplies starting ranges for leaf, water temperature, time, and method.
Method
Western uses a lower leaf-to-water ratio and longer contact; gongfu uses more leaf in a smaller vessel with repeated short infusions.
Water volume
The water that actually contacts the leaf, not the vessel’s advertised brim capacity.
Starting point
The low end, midpoint, or high end of the profile range—not a quality score.

Exceptions that matter

Edge cases and common mistakes

  • Matcha is suspended and whisked rather than strained, so its displayed time describes mixing rather than infusion.
  • Large intact white-tea leaves can occupy substantial space; measure water capacity with the leaves or infuser in place.
  • Tea bags, broken leaf, compressed tea, old leaf, mineral-heavy water, and heat-losing vessels can behave differently from the profile midpoint.
  • For iced tea, scale against the hot water touching the leaves before dilution unless the recipe is specifically a cold brew.

Direct answers

Frequently asked questions

How many grams of tea should I use per cup?

There is no single cup-wide dose. Choose the tea and enter the water that contacts it; the calculator scales that tea’s published starting range to the vessel.

Does a larger teapot need a longer steep?

Not automatically. Scale leaf with water while keeping time and temperature near the tea’s starting range, then adjust from the tasted result.

Should I use teaspoons or grams?

Grams are more repeatable because rolled, broken, powdered, and fluffy leaves occupy very different volumes.

Can I use the calculator for cold brew?

Use the leaf result as a starting ratio, but cold brewing needs its own much longer time and refrigerated food-safety practices; the displayed hot-steep time does not apply.

Why did the result change when I selected another tea?

Each profile has its own editorial leaf, temperature, and time ranges based on style and preparation conventions.

Trace the method

Sources and calculation basis

Method and source review updated .

Apply the tool

Tea guides connected to this calculation

Use a complete profile for identity, history, brewing ranges, quality checks, and current buying picks.

Green

Sencha

Japan

Open profile and buying picks →

Oolong

Tieguanyin

China

Open profile and buying picks →

Black

Assam

India

Open profile and buying picks →

Herbal

Chamomile

Cultivated widely

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Keep planning

Move from one decision to the next without returning to the homepage.

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Move from the calculation to a product comparison built around the same brewing variables.

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Selected from Tealefy’s maintained equipment shortlist for measuring water, leaf, time, or temperature.

COSORI Electric Gooseneck Kettle

Best controlled-pour value

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COSORI Electric Gooseneck Kettle

Amazon's Choice when checked · verified July 22, 2026

Five presets, stainless-steel water contact surfaces, controlled pouring, and a 60-minute hold make it useful across tea styles.

Tradeoff: Its 0.8 L capacity is better for one or two drinkers than a large household.

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OXO Brew Tea Infuser Basket

Amazon's Choice when checked · verified July 22, 2026

Fine perforations, a spacious basket, and a lid that becomes a drip tray make it a strong daily mug brewer.

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KitchenTour Coffee Scale with Timer

Best starter tea scale

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KitchenTour Coffee Scale with Timer

Established 0.1 g model · verified July 22, 2026

A 0.1 g readout and built-in timer make leaf ratios and infusion timing easier to reproduce.

Tradeoff: The large platform is less pocketable than a miniature jewelry scale.

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Affiliate disclosure: As an Amazon Associate I earn from qualifying purchases.