health, counted
When is your last coffee?
Pick a bedtime. We'll do the half-life math and give you a clock time — not a 6-to-13-hour range.
—
last 8 oz coffee (95 mg), average metabolizer
Use the full calculator
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Tools
Caffeine Cutoff Calculator
Your bedtime, your drinks, one precise time to stop.
Open tool →Caffeine Timeline
Log the whole day. See what's left in your blood at bedtime.
Open tool →Plant Points Tracker
Count 30 different plants a week. Coffee counts.
Open tool →Coffee Nap Calculator
Drink, sleep 20 minutes, wake up twice as sharp — if the window is open.
Open tool →Night Shift Caffeine
Dose the shift, protect the day sleep after it.
Open tool →Sit-to-Stand Test
30 seconds of chair stands, scored against CDC norms.
Open tool →Charts
Food data
89 foods, three lenses on every page: per 100 g, per 100 kcal, and "how much for 30 g of protein" — plus 41 head-to-head comparisons.