Sleep Temperature Calculator

Most adults sleep best somewhere in the 60–67°F range, but the right number depends on your bedding, sleepwear, age, and whether you tend to run hot or cold. This calculator gives you a personalized starting point instead of a single generic number.

Your core body temperature naturally drops as you fall asleep, reaches its lowest point during deep sleep, then rises as you approach waking. Matching your room to that curve — cooler mid-sleep, warmer near wake — tends to feel better than holding one flat temperature.

No. These results are estimates for educational purposes and are not medical advice. CircadiaOS does not diagnose or treat any condition. Adjust based on how you actually feel.