What does this tool do?
Tea strength depends on the leaf-to-water ratio, water temperature and steep time. This calculator sets a weight of leaves for your volume and style of tea, then shows the temperature and steep range that suit that tea type.
The Formula
Leaves (g) = water (ml) ÷ 100 × base g per 100 ml × strength factorFrequently Asked Questions
How many grams of tea per cup?
Roughly 2–3 g per 250 ml is a common starting point for black or green tea, and more for herbal infusions. This calculator scales the leaf weight to your teapot rather than assuming a fixed cup.
Should I use boiling water?
Use fully boiling water for black tea and herbal infusions, around 80 °C for green tea, 85 °C for white and 90 °C for oolong. Boiling water can make delicate green tea bitter.