Get an answer to your sleep question. In 10 seconds.
The calculators sleep clinicians use, made free for everyone. No signup. No fluff. Pick a tool, get the answer, get on with your day.
Plus 8 honest gear reviews + 22 reviewer-vetted articles — browse reviews · parent zone · adult sleep
If you wake at
11:16 PM
5 cycles · 7.5h · refreshed
9:46 PM
6c · 9h
11:16 PM
5c · 7.5h
12:46 AM
4c · 6h
- Free tools
- 10
- Honest reviews
- 8
- In-depth articles
- 22
- Sleep consultants
- 2
no signup
no manufacturer payola
clinician-reviewed
PSC + CSSC
Parent zone reviewed by Marie Hansen, PSC. Adult tools and articles reviewed by Logan Foley, CSSC. No medical advice — talk to your doctor for diagnosis.
Pick a question. Get an answer.
Every tool is free, runs in your browser, and produces something you can save, share, or print. Click any card to try it now.
Sleep cycle calculator
When to fall asleep so you wake up refreshed.
11:00 PM
Wake at 7am · 5 cycles · 7.5h
Caffeine cutoff
How late you can drink coffee without disrupting sleep.
2:30 PM
Last cup · 11 PM bedtime
Baby sleep schedule
Age-appropriate naps, feeds, and bedtime in one printable day.
Sample day · 6 mo
- 7am wake
- 9am nap
- 12pm nap
- 7pm bed
Wake windows by age
How long your baby can stay awake before the next sleep.
2.5 h
6-month-old · between sleeps
Jet lag planner
Pre-flight light + meal timing to land already adjusted.
Sample day · 6 mo
- Day -3
- Day -2
- Day -1
- Land
Sleep debt calculator
How much sleep you actually owe yourself this week.
− 6.5 h
Past 7 nights · adult target
Melatonin dose calculator
Right dose at the right time — research-based, not gummy-marketing.
0.3 mg
Adult · 30 min before bed
Nap optimizer
How long to nap and when, based on the time you have.
20 min
Power nap · before 3pm
Sleep score quiz
Rate your sleep on a 0–100 scale in 90 seconds.
72 / 100
8 questions · personalised plan
White noise generator
White, pink, brown, or blue noise — runs free in your browser.
Sample day · 6 mo
- White
- Pink
- Brown
- Blue
Honest gear verdicts.
Saatva Classic
The default 'real bed' pick — feels like a luxury hotel mattress, with the white-glove delivery to match.
Oura Ring 4
The most-cited sleep tracker for a reason — small, comfortable, and the data hooks into actual behaviour change.
Loftie Lamp
The design-first sunrise alarm — beautiful, no subscription, smaller content library than Hatch.
For tired parents.
Newborn sleep: what to expect (0–3 months)
How newborn sleep actually works in the first 12 weeks — wake windows, feeding cadence, day/night confusion, and what's normal vs concerning. Pediatric-reviewer guidance.
Infant sleep: 4–12 months
What infant sleep looks like from 4 months to one year — sleep regressions, nap transitions, sleep training options, and when independent sleep skills emerge. Pediatric-reviewer guidance.
Toddler sleep: 1–3 years
Toddler sleep through ages 1, 2, and 3 — the 2-to-1 nap transition, bedtime resistance, night terrors vs nightmares, and the crib-to-bed move. Pediatric-reviewer guidance.
The printable sleep schedule. Yours free.
Wake windows by age, a sample 6-month-old day, and the five things parents miss most. Subscribe to get the PDF, then one short email every Sunday.