16-question chronotype test: your morningness-eveningness band plus your estimated mid-sleep time. Not a sleep-disorder screen.
Chronotype Test (Morningness–Eveningness)
Sixteen questions, about three minutes. You get two things: one of five disclosed bands, and the more useful number underneath it — your estimated free-day mid-sleep point. Answer for a day with no alarm, no early start and nowhere you have to be.
Self-reported preference is not circadian phase. The physiological measure is dim-light melatonin onset (DLMO), taken in a lab or from timed saliva samples — something no questionnaire can do.
How the Chronotype Test Works
Answer for a free day, not the schedule you are currently keeping
This is the only instruction that really matters. Picture a day with no alarm, no school run and nothing to get up for: when would you naturally fall asleep, and when would you naturally wake? Chronotype is about your body's preference, not your current timetable. Answer for a work day and what you will measure is your employer's schedule, not your own.
Answer 16 items
The first six are time-window and situation choices — free-day sleep and wake times, how alert you are on waking, when your thinking is sharpest. The remaining ten are agreement statements, five keyed each way. The reverse-keyed half is there to defeat straight-line answering.
Read the band, then read the mid-sleep point
The total runs 16–80, higher meaning more morning-leaning, and maps to five disclosed bands. But the number worth keeping is the mid-sleep point underneath: the midpoint between falling asleep and waking, and the standard summary in chronobiology precisely because it is not confused by how long different people sleep.
Treat it as a description of preference, not a diagnosis
This page measures preference as you report it. It is not a measurement of circadian phase and it is not a screen for any sleep disorder. If your sleep is genuinely troubling you, this result cannot answer that question — the About section below sets out when to see a doctor.
About Chronotype — and What This Page Cannot Measure
The Band Is for Sharing. Mid-Sleep Is for Using.
Everyone understands "morning person" and "night owl", but as a research measure the label is crude, because it conflates two separate things: when you go to bed, and how long you stay there. The summary chronobiology reaches for instead is the mid-sleep point — the exact midpoint between falling asleep and waking. Someone asleep at 23:00 and awake at 07:00 has a mid-sleep of 03:00; someone asleep at 01:00 and awake at 09:00 has 05:00. Why the midpoint rather than bedtime? Because a person who goes to bed at 23:00 and sleeps five hours sits in a very different place from one who goes to bed at 23:00 and sleeps nine, and bedtime alone cannot see the difference. The midpoint takes in both ends. Researchers usually take mid-sleep specifically on free days, because a work-day wake time is amputated by an alarm clock, and the resulting number describes your diary rather than your body. That is why this test keeps insisting on a free day, and why the figure it hands back is a free-day mid-sleep.
The concept that follows directly from mid-sleep is social jetlag: the gap between your free-day mid-sleep and your work-day mid-sleep. If your midpoint is 05:00 at the weekend and an alarm drags it to 02:30 on work days, you are living through roughly two and a half hours of time difference every week — and the direction flips twice a week, so the situation resembles someone shuttling repeatedly across two and a half time zones without ever leaving the city. The idea earns its keep because it locates the problem correctly. For most people the difficulty is not that they lean late; it is that a persistent gap sits between what they prefer and what they are required to do. Narrowing the gap — moving a meeting later, moving morning light earlier, not letting the weekend drift another three hours out of spite — is usually more realistic than trying to become a different kind of person.
"Early risers are not more disciplined and late sleepers are not lazier. This is a difference in physiological position, not a grade for character — and nearly every popular treatment of the subject does the opposite."
This Page Cannot Measure Your Circadian Phase
This has to be said bluntly, because consumer content is almost uniformly vague about it. What you report here is preference — when you feel at your best, when you want to sleep. Your circadian phase is a different quantity: the actual position of your internal clock, whose standard physiological marker is dim-light melatonin onset (DLMO). Establishing it means sampling saliva or blood at intervals through the evening under controlled dim light and identifying the point where melatonin concentration begins to rise. It requires a managed light environment and timed samples, done in a laboratory or under a supervised at-home protocol. A web questionnaire cannot produce that number, and this test does not claim to. The two are related, but related is not the same: a person can come out a definite evening type on a questionnaire and have a DLMO in the ordinary range, and the reverse happens too. So read your band as "how I describe my own preference", not as "where my body clock has been measured to be".
This Is Not a Sleep-Disorder Screen — When to See a Doctor
The second limit matters just as much: this page cannot screen for any sleep disorder. It cannot detect insomnia, it cannot detect sleep apnoea, and it cannot detect delayed sleep-wake phase disorder. "I am a night owl" and "I have a sleep disorder" are different claims, and treating the first as an explanation for the second is the most concrete harm a test like this can do — someone with genuine apnoea can score squarely intermediate here and then reassure themselves that persistent daytime sleepiness is just their chronotype. The following are worth taking to a doctor regardless of which band you land in: loud snoring together with breathing pauses that someone has witnessed; waking unrefreshed despite spending adequate hours asleep; persistent daytime sleepiness, particularly nodding off while driving or when you need to concentrate; and a distressing inability to fall asleep or stay asleep, especially once it has run for weeks and is affecting your days. One further note: delayed sleep-wake phase disorder is a real clinical entity, and diagnosing it takes proper assessment — typically sleep diaries and actigraphy — not a questionnaire. If your timing is delayed enough to damage your schooling, your work or your relationships, take that to a clinician rather than to this page.
One Paragraph About Virtue
This section exists because almost all popular content on the subject is a moral argument in disguise. The entire "wake at 5am and change your life" genre repackages a difference in physiological position as a division between the disciplined and the lazy. It is not. Morning types are not more virtuous and evening types are not less serious; both ends are ordinary variation in the population, substantially shaped by genetics and age. Adolescence is the latest anyone will ever be, peaking around twenty and then shifting steadily earlier for the rest of life. What actually produces consequences is not which end you sit at, but the gap between your preference and the schedule you are required to keep — the social jetlag above. An evening type whose life permits a late start has very little problem; a morning type rostered onto night shifts pays a real price too, and nobody calls them lazy for it. Turning this from a question of character back into a question of scheduling is the last thing this page would like you to take away.
The Five Bands
Definite evening type
Score 16–30 — Mornings are largely a write-off and you do not properly come up until the evening or later. Left without an alarm, your whole schedule drifts noticeably later.
Moderate evening type
Score 31–42 — Later-leaning without being extreme. You can get up early, but it costs you something, and your best hours usually arrive after lunch.
Intermediate type
Score 43–53 — The most common place to sit. You belong to neither the early morning nor the small hours, and your schedule is set more by work and life than by your body pushing.
Moderate morning type
Score 54–65 — Earlier-leaning without being extreme. You come up well in the morning and fall away noticeably late at night, so staying up rarely pays for itself.
Definite morning type
Score 66–80 — Your best hours are early. You tend to wake early even after a late night, and evening commitments cost you disproportionately.
Frequently Asked Questions
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No, and the distinction matters. What this measures is your self-reported preference. Your circadian phase is a physiological quantity whose standard marker is dim-light melatonin onset (DLMO) — saliva or blood sampled at intervals through the evening under dim light, to find the moment melatonin starts rising. It needs controlled lighting and timed samples, done in a lab or under a supervised at-home protocol. No questionnaire, this one included, can produce that number. The two are correlated but not the same: you can be a definite evening type on a questionnaire and have a DLMO in the ordinary range.
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No — not at all. It cannot detect insomnia, it cannot detect sleep apnoea and it cannot detect delayed sleep-wake phase disorder. Treat "I am an evening type" and "I have a sleep disorder" as two separate claims: both can be true, or only one. See a doctor about any of the following regardless of your band: loud snoring with breathing pauses that someone has witnessed; waking unrefreshed despite adequate hours; persistent daytime sleepiness, especially nodding off while driving; and a distressing inability to fall or stay asleep. Explaining those symptoms with a chronotype label is the most practical harm a page like this can cause.
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Mid-sleep is the exact midpoint between falling asleep and waking. Asleep at 23:00, awake at 07:00, and your mid-sleep is 03:00. It beats bedtime because bedtime is contaminated by sleep duration: a person who goes to bed at 23:00 and sleeps five hours sits somewhere very different from one who goes to bed at 23:00 and sleeps nine, yet their bedtimes are identical. The midpoint absorbs information from both ends, which is why chronobiology research generally uses it to summarise where someone sits. The figure on this page is the free-day mid-sleep, because a work-day wake time is cut short by an alarm and describes your diary rather than your body.
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It is the difference between your free-day mid-sleep and your work-day mid-sleep. If your midpoint is 05:00 at the weekend and an alarm pulls it to 02:30 on work days, you carry about two and a half hours of social jetlag, with the direction flipping twice a week — much like someone commuting across two and a half time zones who never actually leaves town. The concept is useful because it puts the conflict where it belongs: in the gap between preference and schedule, not in you. Narrowing the gap is usually more achievable than remaking yourself — more bright natural light in the morning, less bright light and fewer screens late, and not letting the weekend drift another three hours out.
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No, and this page will not join that argument. Morning and evening leanings are ordinary variation, substantially set by genetics and age, and unconnected to discipline or character. Morning types look more successful mostly because school and work timetables were designed around them. Put the same person on permanent night shifts and the cost lands on the morning type instead — and nobody calls them lazy for it. What produces consequences is the gap between preference and schedule, not which end you occupy.
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You can shift it within limits, but you cannot reset it. The movable part runs mainly on light: consistent bright natural light in the morning pulls your timing earlier, and reducing bright light in the evening — particularly screens in the hours before sleep — reduces the drift later. A fixed wake time works better than a fixed bedtime, because the light you meet on waking is the strongest timing signal you get. The immovable part is genetic predisposition and age. A realistic target is an hour or so of movement, not turning a definite evening type into a definite morning type, and it needs maintaining — a couple of indulgent weekends will push it back.
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Because answering for a work day measures your timetable rather than your body. Work-day wake times are set by the alarm, which is early for everyone and therefore carries almost no information about you personally. A free day — no alarm, no school run, nothing to get up for — is the only condition under which your natural sleep and wake times become visible. It is also why the mid-sleep figure on this page is specifically a free-day mid-sleep.
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Several usual suspects. First, you may have had different days in mind — one attempt picturing a genuine free day, the next unconsciously answering for work days. That single factor produces the largest swings. Second, season and light exposure matter, noticeably so at latitudes with dark winters. Third, age shifts timing gradually earlier, though on a scale of years rather than weeks. Fourth, and most honestly: this item set has no test-retest reliability study, so we cannot tell you how stable it is by itself. Scores sitting near a band boundary are especially likely to jump.
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Openly. The total runs 16–80: 16–30 is definite evening, 31–42 moderate evening, 43–53 intermediate, 54–65 moderate morning and 66–80 definite morning. These are fixed cut-points on the scale, not percentiles — the page will never tell you that you are earlier than some percentage of people, because we have no normative sample. If your score sits right on a boundary, read it as falling between two bands, which is closer to the truth than remembering a label.
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Yes, and substantially. Children lean early, timing shifts markedly later through adolescence, reaches the latest point of a lifetime somewhere around twenty, then moves gradually earlier year on year, often returning to genuinely early hours in later life. This is part of why teenagers struggling to get up in the morning has a physiological basis rather than being purely an attitude problem. So a result at twenty differing from a result at forty is entirely normal.
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You can still answer the items, but pay particular attention to the free-day framing and treat the result more cautiously. Shift work makes "a day with no alarm" hard to identify and often splits sleep into segments, and both of those break the questionnaire's assumptions. More importantly, shift-related sleep problems — including shift work sleep disorder — are clinical territory that needs proper assessment, and this page is no substitute for it. If shift work is visibly affecting your health or your safety, especially drowsiness while driving, see a doctor.
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No. Your answers are scored entirely in your browser and are never uploaded or stored by RECATOOLS — including the sleep and wake windows you select. While a test is in progress they are kept in your browser's local storage so you can resume if the tab closes, and they are deleted when you finish. Viewing pages on this site works like any other website and is covered by our Privacy Policy.
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