What Is the Tea Brewing Calculator?
This tool tells you exactly how many grams of loose-leaf tea to use for any volume of water. Instead of guessing, you choose a strength expressed as grams of dry leaves per 100 ml of water, and the calculator scales it to your cup, mug, or full teapot. It works for black, green, oolong, white, and herbal teas — just pick the strength that suits the leaf.
How to Use It
Enter the amount of water you plan to brew in millilitres (a standard mug is about 250 ml, a small teapot around 500 ml). Then set your preferred strength in grams per 100 ml. A common starting point is 1.5 g per 100 ml for everyday black tea; lighter greens may use 1 g and bold breakfast blends 2 g or more. The result shows the grams of leaves to measure out, plus a rough teaspoon estimate.
The Formula Explained
The math is a simple proportion:
$$\text{tea grams} = \text{water ml} \times \frac{\text{grams per 100 ml}}{100}$$
Dividing the strength by 100 converts it into grams per single millilitre, and multiplying by your water volume scales it up. The teaspoon figure assumes roughly 2 grams of loose tea per level teaspoon, though this varies with leaf density.
Worked Example
Say you are brewing a 500 ml pot at a strength of 1.5 g per 100 ml. The calculator computes $$500 \times \left(\frac{1.5}{100}\right) = 500 \times 0.015 = \textbf{7.5 grams},$$ which is about 3.75 teaspoons of leaves.
FAQ
What strength should I use? Start at 1.5 g per 100 ml and adjust to taste — increase for stronger tea, decrease for a lighter brew.
Does this work for tea bags? A typical tea bag holds about 2 g, so divide the gram result by 2 to estimate the number of bags.
How accurate is the teaspoon number? It is an approximation. Light, fluffy teas weigh less per spoon than dense rolled leaves, so a kitchen scale is more precise.
