Tea Brewing Calculator

Calculate the right amount of tea leaves and water, plus steep time and temperature, for the tea type you're brewing.

Water Amount

Unit

Tea Type

Result

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Enter a water amount to see your brew recipe

Leaf Amount

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Steep Time

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Water Temp

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Reference leaf ratio, steep time, and water temperature by tea type

Number of Cups (8oz each)

Scaled brew recipe

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Enter a cup count to scale the recipe for the tea type selected on the Brew Recipe tab.

Total Water

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Total Leaf

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4 min read 3 steps 6 terms 3 examples 6 FAQs leafGrams = waterOz × (gPer8oz(teaType) ÷ 8)

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Walk-through

How to Use This Calculator

3 steps

Pick your tea type

Choose Black, Green, White, Oolong, or Herbal from the dropdown. Each type has a different leaf-to-water ratio, steep time, and ideal water temperature — green and white teas use cooler water and shorter steeps, while black and herbal teas use hotter, longer ones.

Enter your water amount

Type the amount of water you're brewing and choose its unit — fluid ounces, milliliters, or standard 8oz cups. The result updates instantly as you type, with no need to press a Calculate button.

Read the brew recipe

The result card shows the leaf amount in grams, plus the recommended steep time and water temperature for the tea type selected. Switch to the By Tea Type tab to compare all five types at a glance, or the Multiple Cups tab to scale the recipe up for a full pot.

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Reference

Formula & Methodology

3 formulas

Leaf amount

leafGrams = waterOz × (gPer8oz(teaType) ÷ 8)

Multiply the water volume (in fluid ounces) by the tea type's leaf-to-water ratio, expressed as grams of loose leaf per 8 fluid ounces. Each tea type has a different baseline ratio because leaf density and desired strength vary by type.

Steep time and water temperature

steepMin, tempF = lookup(teaType)

Steep time and water temperature come from a per-type reference table rather than a formula — they're brewing conventions, not something derived from the water volume. Scaling the batch size changes the leaf and water amounts but not the steep time or temperature.

Scaling to multiple cups

totalWaterOz = cupCount × 8; totalLeafGrams = cupCount × gPer8oz(teaType)

Both leaf amount and water scale linearly with the number of standard 8oz cups being brewed. Steep time and temperature stay the same regardless of batch size.

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Glossary

Key Terms Explained

6 terms

Leaf-to-water ratio The amount of loose-leaf tea, by weight, used per unit of water — typically expressed as grams per 8 fluid ounces (one standard cup). A stronger ratio uses more leaf for the same water volume.

Steep time How long the tea leaves stay in contact with hot water before straining. Steeping too long over-extracts tannins and can make the tea bitter; steeping too briefly under-extracts flavor.

Water temperature The temperature water should be heated to before pouring over the leaves. Delicate teas like green and white use cooler water to avoid scalding the leaves and releasing excess bitterness; robust teas like black and herbal tolerate near-boiling water.

Oxidation The chemical process tea leaves undergo after picking, which determines the tea category. Green and white teas are minimally oxidized, oolong is partially oxidized, and black tea is fully oxidized — this is why they brew so differently.

Loose leaf Whole or broken tea leaves sold unpackaged, as opposed to pre-portioned tea bags. Loose leaf generally allows more precise control over the leaf-to-water ratio, which is what this calculator measures.

Tea type The broad category a tea falls into — Black, Green, White, Oolong, or Herbal — based on its processing method (oxidation level) or, for herbal blends, the fact that it isn't made from the Camellia sinensis plant at all.

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Scenarios

Real-World Examples

3 worked examples

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Morning tea drinker

Brewing a single 8oz cup of black tea

Water Amount 8 oz Tea Type Black

8oz of water needs about 2.25g of black tea leaves, steeped 3-5 minutes at 200-212°F (near boiling). Black tea tolerates hot water and a longer steep without turning bitter, unlike more delicate types.

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Green tea enthusiast

Brewing green tea, which needs cooler water and a shorter steep

Water Amount 8 oz Tea Type Green

8oz of water needs about 2g of green tea leaves, steeped just 2-3 minutes at 170-180°F. Water this much cooler than boiling protects the delicate leaves from turning bitter and grassy.

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Herbal tea drinker

Brewing a caffeine-free herbal blend, which tolerates a longer steep

Water Amount 8 oz Tea Type Herbal

8oz of water needs about 2.5g of herbal blend, steeped 5-7 minutes at 208-212°F. Herbal blends have no tea leaf tannins to over-extract, so a longer steep at near-boiling water pulls out more flavor without bitterness.

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Deep Dive

Understanding the Tea Brewing Calculator

3 chapters · 4 min read

Loose-leaf tea brews best when the leaf amount, water temperature, and steep time all match the tea type — a ratio and steep time that suits black tea will scorch a delicate green tea and under-extract a robust herbal blend. This calculator scales the standard leaf-to-water ratio for five common tea types so you get a consistent cup every time, whether you're brewing one cup or a full pot.

How the Tea Brewing Calculator works

The calculator multiplies your water volume by a per-type leaf ratio: leafGrams = waterOz × (gPer8oz(teaType) ÷ 8). Each tea type's ratio, steep time, and water temperature reflect general tea-industry brewing conventions — black and oolong use roughly 2.25g per 8oz, green and white use about 2g, and herbal blends run slightly heavier at 2.5g since they have no tea-leaf tannins to worry about over-extracting.

Steep time and water temperature aren't derived from the water volume — they come from a fixed reference table per tea type, since those depend on the tea's oxidation level and leaf structure rather than how much water you're using.

Inputs and what they mean

The Water Amount and Unit fields set how much you're brewing — fluid ounces, milliliters, or standard 8oz cups. The Tea Type dropdown is the input with the biggest effect on the recommended steep time and temperature: green and white teas need water 20-40°F cooler than black or herbal tea, and a much shorter steep, to avoid extracting excess bitterness from their less-oxidized leaves.

On the Multiple Cups tab, entering a cup count scales both the water and leaf amounts linearly for the tea type selected on the Brew Recipe tab, which is useful for brewing a full pot or a pitcher of iced tea.

Limits and edge cases

These ratios and temperatures are general brewing conventions, not manufacturer-specific instructions — some single-origin or specialty teas (e.g., delicate Japanese gyokuro, or high-mountain oolongs) recommend narrower ranges than the broad category defaults used here. If a tea's packaging lists its own brewing instructions, follow those instead. This calculator also assumes loose-leaf tea; pre-portioned tea bags are typically calibrated for one cup regardless of the leaf-to-water ratio shown here.

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Questions

Frequently Asked Questions

6 questions

What is the standard tea leaf-to-water ratio?+

A common starting point is about 2g of loose-leaf tea per 8 fluid ounces (one cup) of water, though it varies slightly by type — roughly 2.25g for black and oolong, 2g for green and white, and 2.5g for herbal blends.

What temperature water should I use for green tea?+

Green tea brews best at about 170-180°F, noticeably cooler than boiling. Water that's too hot scalds the delicate, less-oxidized leaves and pulls out excess bitterness and a grassy, astringent flavor.

How long should I steep black tea?+

Black tea typically steeps for 3 to 5 minutes at near-boiling water (200-212°F). Steeping longer than 5 minutes tends to over-extract tannins and make the cup bitter.

Why does herbal tea steep longer than other types?+

Herbal blends aren't made from the tea plant (Camellia sinensis) and contain no tea-leaf tannins, so there's little risk of over-extraction or bitterness from a longer steep. A 5-7 minute steep at near-boiling water pulls out more flavor from the dried herbs, fruit, or flowers.

Does this calculator work for tea bags, or only loose leaf?+

This calculator is calibrated for loose-leaf tea, where you control the exact leaf amount. Pre-portioned tea bags are typically designed for one 8oz cup regardless of type — use roughly one bag per 8oz of water and follow the same steep time and temperature guidance shown here.

How do I scale the recipe for multiple cups?+

Both the leaf amount and water amount scale linearly with the number of cups — double the cups, double the leaf and water. Use the Multiple Cups tab to enter a cup count and get the scaled totals directly, without doing the multiplication by hand. Steep time and water temperature don't change with batch size.

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