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Chronotype Test based on Michael Breus
20 questions about your real sleep hours, and at the end all four scores
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Dr. Michael Breus popularized the idea that our biological clock influences our peaks of energy, creativity and focus. These 20 questions are about the hours you actually keep, not the ones you wish you kept. At the end you get all four scores (Lion, Bear, Wolf and Dolphin) and the chronotype that leads in you, along with what that concretely changes about your day. The calculation runs in your browser, with no email and no account.
Based on the work of Michael Breus (2016)
Independent test offered by Profilia. This is not the official questionnaire by Michael Breus, who is neither associated with nor affiliated with Profilia.
Content updated in October 2026
Is the test scientifically validated?
What is the chronotype test?
What are the limits of this test?
Related articles
Method and numbers
- Questions
- 20 questions
- Actual median time
- 5 min 27 s
- Access
- Free, no account, no email
Observed profile distribution
Based on 238 recorded completions.
- Dolphin
- 37.4%
- Wolf
- 27.3%
- Bear
- 25.2%
- Lion
- 10.1%
These numbers are measured on real completions, not claimed. The time shown is the observed median, not an estimate.
How this result is calculated
- Each of the 20 questions offers 4 answers, one per profile: every profile is offered once per question, so none is favored by how many answers represent it.
- Each answer gives 1 point to the profile it represents, and points add up: a profile can reach at most 20 points.
- Your main profile is the one with the most points.
- The result bars show how many of your 20 answers went to each profile.
- When profiles tie for first place, the tie is shown on the result. Among the tied profiles, the one picked furthest into the questionnaire becomes the main result: it provides the title, the detailed description and the share link. This rule favors no profile.
The numbers in this rule are not written by hand: they are taken from the test's scoring key and automatically checked against the calculation the test actually runs.
Your result as a downloadable PDF, no account needed.
What this test measures, and its limits
This test measures the time of day when you say you feel most alert, and when you prefer to sleep. It does not measure your sleep itself, which only a sleep diary or actigraphy can observe, and it does not screen for any disorder. There is no reference group: your result says which of the four profiles stands out most in your own answers, not where you stand relative to others. It's a tool for organizing your days, not medical advice.
About this test
The concept of chronotype refers to the biological profile that governs your natural preferences for sleep, waking, and activity over a 24-hour cycle. If some people feel at their best at dawn while others do not truly come alive until late evening, it is not a matter of willpower: it is the result of the circadian clock, the internal biological mechanism tied to the day-night rhythm. Research by chronobiologist Jürgen Aschoff in the 1960s, followed by the work of Till Roenneberg (LMU Munich) across tens of thousands of people, established that this circadian rhythm varies considerably from person to person: most people fall somewhere between the two extremes, and only a minority is clearly a morning or evening type.
It was Dr. Michael Breus, a psychologist specializing in sleep disorders, who popularized in 2016 in his book "The Power of When" a classification into four chronotypes: the Lion, an early riser and ambitious planner who goes to bed early and makes best decisions in the morning; the Bear, which Breus presents as the most common profile, aligned with the sun and more efficient in the late morning; the Wolf, a night owl and creative thinker whose mind truly wakes up in the evening; and the Dolphin, a light, often insomniac sleeper with fragmented sleep and unpredictable energy.
Knowing your chronotype is not a trivial curiosity: it is a practical key to optimizing your productivity, health, and wellbeing. Scheduling your most demanding cognitive tasks at your peak hours, adjusting your exercise or eating schedule, and stopping the fight against your natural rhythm can radically transform your daily experience. This free test reveals your chronotype in 20 questions.
One important note: the four animals are a mainstream model, not a researcher's scale. In the lab, chronotype is measured with validated questionnaires like the MEQ (Horne and Ostberg, 1976) or Roenneberg's MCTQ, which place each person on a continuum from most morning-oriented to most evening-oriented. This test is a free adaptation of that idea: it gives you a tendency, not a measurement.
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Your Chronotype
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Chronotype
Who really knows you?
They see the question, not your answer. One guess, then your result is revealed.
Guess my chronotype.
Your strengths
Your areas to watch
Under stress
Your communication rhythm
Interactions with other chronotypes
The answers of this profile mostly describe feeling well at the start of the day and slower at the end of it. If that is true of the person in front of you, a morning conversation may suit them better, which you can check by asking them.
The answers of this profile mostly describe steady energy that is highest around midday. If that is true of the person in front of you, midday may be a good time to talk, which you can check with them.
The answers of this profile mostly describe a slow start and energy that rises in the afternoon and evening. If that is true of the person in front of you, an afternoon conversation may suit them better than an early one, which you can check with them.
The answers of this profile mostly describe light sleep and a rhythm that changes from one day to the next, with no fixed schedule. If that is true of the person in front of you, asking what suits them that day may work better than assuming a schedule.
Ideal environment
Management style
Careers that suit you
What's next
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The more tests you take, the more axes your DNA covers.
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Go further
The chronotype test gives a tendency, based on your stated preferences, using Michael Breus's popular model. It is neither a scientific measurement nor a medical diagnosis. Your chronotype changes with age and lifestyle habits.
Independent test offered by Profilia. This is not the official questionnaire by Michael Breus, who is neither associated with nor affiliated with Profilia.