Question 1

How does the sleep calculator work?

Accepted Answer

It counts backward or forward in 90-minute blocks and includes your expected time to fall asleep.

Question 2

Why are there multiple suggested times?

Accepted Answer

Different sleep cycle counts fit different schedules. Most adults aim for roughly 4 to 6 full cycles.

Question 3

Should I use this as medical advice?

Accepted Answer

No. This is a planning tool. Persistent sleep issues should be discussed with a qualified clinician.