Caffeine Calculators
Know exactly how much caffeine is in your cup, add up your day, and see when it will clear your system before bed.
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Caffeine Intake Calculator
Add up your daily caffeine across espresso, drip, cold brew, and more — and see how it compares to the FDA limit.
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Caffeine Half-Life Calculator
See how much caffeine is still in your system at bedtime — and whether that afternoon coffee will cost you sleep.
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