Sleep Tools & Calculators
Every sleep tool we make, in one place. Pick one to get started.
Calculators
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Sleep Debt Calculator
See how much sleep you've actually lost this week and how to pay it back without wrecking your weekend.
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Baby Sleep Calculator
Age-aware nap and bedtime windows from 0-24 months, based on what the developmental research actually says.
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Caffeine Half-Life Calculator
Type in your last cup. See how much caffeine is still rattling around your system at bedtime — and whether it's enough to wreck your sleep.
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Bedtime Card
Print a clean half-page bedtime card with your schedule and a few reminders. Stick it on the fridge.
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Planners
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Jet Lag Calculator
Plan your light, caffeine, and sleep timing for any flight so you arrive ready instead of fried.
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Should I Nap Right Now?
Tell us how tired you are and when you need to be sharp again. Get an instant yes or no — and the exact length to set.
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DST Shift Planner
Don't get steamrolled by the time change. Four nights of small 15-minute shifts and you'll sail through without the jet lag.
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Couples Sleep Coordinator
When you and your partner are on different schedules, find the overlap and a compromise bedtime that doesn't ruin either of you.
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Shift Worker Sleep Planner
Built for night shifts, rotating schedules, and early starts. Anchor sleep, light timing, and the small things that keep you human.
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Trackers
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Sleep Journal
Log how you actually slept. After a couple of weeks the patterns become obvious — and the calculator gets smarter at suggesting your real ideal window.
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Sleep Cycle Visualizer
See what your night looks like — light, deep, REM, and where your alarm should land for a clean wake-up.
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Your Settings
One place for everything the site remembers about you. Local to this device, never uploaded.
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