Tea Tools: Caffeine, Steeping Time & Brewing Ratio

Free interactive tea tools — estimate caffeine, find steeping times and water temperatures, and calculate leaf-to-water ratios for Western or Gongfu brewing.

Three small calculators for everyday brewing decisions. Numbers are research-style ranges, not medical advice and not lab results for your exact tin.

Tools

calculate

Caffeine calculator

Tea type × cups × method → estimated mg for the day.

timer

Steeping time guide

Recommended water temperature and first-infusion time by tea and method.

scale

Brewing ratio

Vessel volume → leaf weight for Western or Gongfu style.

How to use them

  1. Start with the question you have (caffeine, time, or leaf amount).
  2. Adjust inputs to match how you actually brew.
  3. Cross-check with a guide: caffeine by tea type, brewing, teaware.

Estimates move with leaf grade, brand, and steep length. For wellness context, read the disclaimer on each wellness article and our terms.