Caffeine Calculators
Estimate how much caffeine is in your matcha by grams and grade, add up your day, and see how long caffeine may stay in your system before bed.
Matcha Caffeine Calculator
Estimate the caffeine in your matcha by grams and grade, see how it compares with coffee and tea, and track your daily total against the FDA 400 mg guidance.
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Caffeine Half-Life Calculator
See how much caffeine from your matcha is still in your system at bedtime, with a 12-hour decay curve based on caffeine's roughly five-hour half-life.
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