Chronotype Calculator
Are you a morning person or night owl? Discover your optimal sleep schedule
Discover Your Sleep Chronotype
Find out if you're a morning person or night owl with a few simple questions
❓ What is a Chronotype?
Your chronotype is your natural sleep-wake pattern determined by your biological rhythm. Some people are naturally morning types, others are evening types. It's not laziness—it's a genetically determined biological trait.
Understanding your chronotype helps you know when to sleep, work, and exercise most effectively. Rather than forcing yourself to be a morning person, living according to your natural rhythm is much better for your health and productivity.
🔬 Scientific Basis
This test is based on sleep researcher Dr. Michael Breus's chronotype theory. It classifies 4 sleep patterns based on research on circadian rhythm genes like PER3.
Want automatic app locking?
Good Night Lock helps you sleep better by automatically locking distracting apps during bedtime.
Download AppExplore More Free Sleep Tools
Sleep Calculator
Perfect bedtime based on sleep cycles
Caffeine Calculator
When to stop coffee for better sleep
Sleep Efficiency
Measure your sleep quality
Bedtime Routine
Create your evening routine
Jet Lag Calculator
Beat jet lag when traveling
Power Nap Timer
Perfect nap duration timer
Blue Light Calculator
When to stop using screens
Sleep Debt Calculator
Track your sleep deficit
Sleep Apnea Risk
Assess apnea risk
Optimal Room Temperature
Ideal sleep temperature
Kids Sleep Calculator
Optimal bedtime for your child