Quick answer
Tea ratio = tea leaf ÷ water. 3 g of tea in 240 mL of water is 1.25 g per 100 mL, or 12.5 g per litre.
Enter the weight of tea and the amount of water. The calculator returns the ratio and grams per litre.
Related tools: Coffee Brew Ratio Calculator: Coffee-to-water ratio and grams per liter. Coffee Extraction Yield Calculator: Extraction yield from dose, beverage weight and TDS. Ratio Calculator: Simplify a ratio of two whole numbers.
How to use the Tea Ratio Calculator
- Enter tea leaf (g) (above 0).
- Enter water (mL) (above 0).
- Press Calculate to see the result, and use Reset to start again.
| Input | What to enter | Allowed values |
|---|---|---|
| Tea leaf | A number, in g | > 0 |
| Water | A number, in mL | > 0 |
Formula and method
Formula
ratio = tea ÷ water
IEEE-754 double precision; shown to the decimals indicated.
Packaging directions usually give the best starting point.
Worked examples
These examples are verified: each one is an automated test case that the live calculator must reproduce exactly.
Example 1
Inputs: Tea leaf = 3; Water = 240.
| Result | Value |
|---|---|
| Ratio | 1.25 g per 100 mL |
| Grams per liter | 12.5 |
Example 2
Inputs: Tea leaf = 8; Water = 1000.
| Result | Value |
|---|---|
| Ratio | 0.8 g per 100 mL |
| Grams per liter | 8 |
Example 3
Inputs: Tea leaf = 2; Water = 150.
| Result | Value |
|---|---|
| Ratio | 1.333 g per 100 mL |
| Grams per liter | 13.33 |
The first line is the headline result (ratio). Below it the tea Ratio Calculator lists grams per liter, which describe the same case from other angles. IEEE-754 double precision; shown to the decimals indicated.
Starting points
Many guides suggest about 2 to 3 g of loose tea per 200 to 250 mL cup (roughly one teaspoon), and 10 to 15 g per litre for iced tea concentrates. Green and white teas use cooler water and shorter times than black teas.
Adjust to taste
Taste decides the right ratio. Stronger tea comes from more leaf, not from longer steeping, which brings out bitterness. Leaf size and shape change how much fits in a teaspoon.
How the result changes with tea leaf
Holding every other input at the first worked example, this table changes only tea leaf. It shows how sensitive the answer is to that one value; each row was produced by running this calculator.
| Tea leaf | Ratio | Grams per liter |
|---|---|---|
| 1.5 | 0.625 g per 100 mL | 6.25 |
| 3 | 1.25 g per 100 mL | 12.5 |
| 6 | 2.5 g per 100 mL | 25 |
| 12 | 5 g per 100 mL | 50 |
What happens with invalid input
These messages are produced by the calculator itself, so you know what to fix.
- Tea leaf: entering "0" shows "Tea leaf must be greater than 0." beside that field and no result.
- Water: entering "0" shows "Water must be greater than 0." beside that field and no result.
Choosing between the Tea Ratio Calculator and similar calculators
Each row shows what a related calculator on this site asks for and what it returns, so you can pick the one that matches your question.
| Calculator | You enter | It returns |
|---|---|---|
| [Coffee Brew Ratio Calculator](/cooking/coffee-brew-ratio-calculator/) | coffee and water | Brew ratio |
| [Coffee Extraction Yield Calculator](/cooking/coffee-extraction-ratio-calculator/) | coffee dose, beverage weight and tDS | Extraction yield |
| [Ratio Calculator](/math/ratio-calculator/) | first number and second number | Simplified ratio |
| [Rice to Water Ratio Calculator](/cooking/rice-water-ratio-calculator/) | rice and water per 1 part rice | Water needed |
| [K/D Ratio Calculator](/other/kd/) | kills and deaths | K/D ratio |
Background: cooking measurements
For baking, weight is more reliable than volume. A cup holds a fixed volume but its weight depends on the ingredient's density, and a cup of flour can vary by 20 to 30 grams depending on how it is scooped, so published gram-per-cup values for the same ingredient differ from site to site. Spoon and level flour if you must measure by volume.
Check which cup a recipe uses: the US cup is 236.588 mL, while a metric cup is 250 mL.
Assumptions and limitations
- Taste decides the right ratio
Cooking times are guides. Use a food thermometer to confirm safe internal temperatures.
If a required value is empty, not a number, or outside its allowed range, the form marks that field with a message and shows no result instead of a misleading number. The automated checks deliberately try invalid entries for tea leaf and water to confirm this.
Frequently asked questions
How much tea per cup?
About 2 to 3 g for a 240 mL cup.
How long should black tea steep?
Usually 3 to 5 minutes.
Is a teaspoon of tea 2 g?
Roughly, depending on the leaf.
What does the Tea Ratio Calculator calculate?
Tea leaf per amount of water. It returns Ratio and Grams per liter.
What formula does the Tea Ratio Calculator use?
ratio = tea ÷ water. Packaging directions usually give the best starting point.
What do I need to enter in the tea Ratio Calculator?
You enter Tea leaf (g) and Water (mL).
How is the result rounded or limited?
IEEE-754 double precision; shown to the decimals indicated. Taste decides the right ratio.
What is an example of a tea Ratio result?
With tea leaf 3 and water 240, the ratio is 1.25 g per 100 mL.
Can I rely on this calculator for a decision?
Cooking times are guides. Use a food thermometer to confirm safe internal temperatures. For this calculator in particular: Taste decides the right ratio.
Related calculators
- Coffee Brew Ratio Calculator — Coffee-to-water ratio and grams per liter.
- Coffee Extraction Yield Calculator — Extraction yield from dose, beverage weight and TDS.
- Ratio Calculator — Simplify a ratio of two whole numbers.
- Rice to Water Ratio Calculator — Water needed for rice at the ratio you prefer.
- K/D Ratio Calculator — Kill/death ratio.
- Compression Ratio Calculator — Static compression ratio from bore, stroke and clearance volume.
Sources
- OpenStax, Prealgebra 2e (Rice University): fractions, decimals, percents, ratios and rounding
- NIST Special Publication 811, Guide for the Use of the International System of Units (SI), Appendix B conversion factors (international inch 25.4 mm, avoirdupois pound 0.45359237 kg)
Content last reviewed 2026-11-04. Formulas and worked examples are checked by automated tests against independently computed values.