How to use a sleep calculator to determine your ideal bedtime

Nov 21, 2025 · 9 min read · sleep — Sep 8 — 9 min readBy Calm's Editorial TeamClinically reviewed by Dr. Chris Mosunic, PhD, RD, MBA To feel more well-rested, you don’t need a fancy app — just a sleep calculator. Learn what it is, why it works, and how to figure out how much sl...