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Reference-only calculation
The result uses your inputs and general reference ranges. Real decisions can change with health status, medication, pregnancy or postpartum status, and medical history.
Sleep duration calculator
Sleep duration calculator. Enter values to calculate a reference result; health decisions should be made with professional guidance.
Inputs
Medical and Safety Note
This tool is for reference only and does not replace medical diagnosis or treatment. Always consult a qualified health professional for diagnosis and care.
This tool is for reference only and does not replace medical diagnosis or treatment. Always consult a qualified health professional for diagnosis and care.
Before You Use It
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How tracker data is stored
Tracker-style tools save only in this browser’s localStorage. Data may disappear if you switch devices, clear browser data, or use private browsing.
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Compare with CDC sleep ranges
CDC guidance lists 7 or more hours as a general adult baseline for ages 18-60, but age, shift work, pregnancy or postpartum status, health conditions, and sleep disorders can change needs.
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Sleep problems are not just duration
Trouble falling asleep, repeated awakenings, or persistent tiredness after enough time in bed may need clinician review or a sleep evaluation regardless of the calculated duration.
Frequently asked questions
Can this diagnose anything?
No. This page is a calculation and logging aid only. It does not replace diagnosis, treatment, or prescribing.
Is my data saved on a server?
No. Tracker features use only this browser’s local storage.