Caffeine Timeline
Add drinks and times to estimate how caffeine accumulates and decays throughout the day using a transparent half-life model.
Try it freeCoffee Cutoff Time
Enter a bedtime and drink amount to calculate an estimated cutoff from the same transparent decay model.
Find your cutoffCaffeine Content Database
Look up caffeine content in 80+ popular drinks. Search by name, filter by category, and compare amounts.
Browse drinksCaffeine Comparison
Compare caffeine content in any two drinks side by side using serving and per-volume figures.
Compare drinksBrew Ratio Calculator
Get the perfect coffee-to-water ratio for drip, French press, pour-over, espresso, cold brew, and more.
Get your ratioCoffee Spending Calculator
Find out how much you spend on coffee per week, month, and year. See fun comparisons of what else that money could buy.
Calculate spending
