Circadian Rhythm Calculator (2025)

November 16, 2025 by Ghazala Shakeel

Circadian Rhythm & Chronotype Calculator | SleepCalculators.Online

🌅 Circadian Rhythm Calculator

Discover your chronotype and optimize your daily schedule with your natural body clock

💡 About This Assessment

Answer these questions based on your natural preferences (not work obligations). This helps identify your chronotype and optimal daily rhythm.

Your Age ?

Typical Wake Time (Free Days) ?

Typical Bedtime (Free Days) ?

1. If you had no commitments, what time would you wake up?

Before 6:30 AM 6:30-7:45 AM 7:45-9:45 AM 9:45-11:00 AM After 11:00 AM

2. At what time of day do you feel your best?

Early morning (5-8 AM) Mid-morning (8-11 AM) Afternoon (11 AM-5 PM) Evening (5-10 PM) Late night (after 10 PM)

3. When do you prefer to exercise?

Early morning Late morning Afternoon Early evening Late evening

4. How difficult is it to wake up in the morning?

Very easy - I wake before the alarm Fairly easy Somewhat difficult Very difficult Extremely difficult

🌅

Complete the assessment to discover your chronotype and personalized daily schedule recommendations

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