Disclaimer
SleepCalcHub gives general information and estimates. It isn’t medical advice.
Not medical advice
The calculators, answer pages and guides on SleepCalcHub are for general information and education. They don’t diagnose, treat or prevent any condition, and they aren’t a substitute for advice from a doctor or another qualified health professional. Always ask a professional about your own health, your child’s health, or before making changes to medicines or treatment.
Who writes the content
SleepCalcHub is run by Partha Gupta, who isn’t a medical professional. Content isn’t clinically reviewed. It’s based on published guidance and research, which is cited on each page so you can check it yourself.
Calculators give estimates
- Bedtime, wake-up and nap times assume sleep cycles of about 90 minutes. Real cycles vary between people and across the night.
- Sleep needs by age show recommended ranges for healthy people. Individual needs differ.
- Sleep debt is a simple total of the hours you enter against a target. It isn’t a clinical measure.
- Caffeine cutoffs and nap cutoffs are planning rules, not guarantees. Caffeine sensitivity and dose vary.
- Jet lag plans are general examples, not personalised treatment. They don’t account for your health, flights or medicines.
When to seek help
If you think you or someone else may have a medical emergency, call your local emergency number straight away. Talk to a doctor if sleep problems last for weeks, affect your daily life, or come with loud snoring, pauses in breathing or severe daytime sleepiness.
External sources
We link to outside organisations and research for reference. We don’t control those sites and aren’t responsible for their content.