Standardised · μ=100 · σ=15
What's your IQ?
Find out in 15 minutes.
What you'll see when you finish
A clinically-calibrated assessment across pattern, numerical, verbal, and spatial reasoning. You'll see your standardised score, your percentile, and a four-domain cognitive fingerprint.
- Standardised IQ
- Percentile rank
- Cognitive fingerprint
- No email required
What you'll see when you finish
Principles
Built on the same standards used in clinical psychometrics.
Standardised
Canonical IQ scale
Scores are reported on the standard mean-100, σ-15 scale used in clinical psychology since Wechsler.
Multifactor
Four reasoning domains
Items cover pattern recognition, numerical reasoning, verbal analogy, and spatial transformation.
Transparent
Open methodology
Every item has a published rationale. Percentiles are computed from a normal CDF, not a black box.
Private
No data retention
Results are stored locally on your device. We do not collect, sell or share assessment data.
Item preview
A glimpse of the
instrument.
Every item has been hand-authored and reviewed. There are no advertising trackers, no upsells, and no AI-generated filler — only calibrated questions intended to produce a defensible measurement.
Which figure continues the sequence?
Preview only — answers are not recorded outside the assessment.
Verbal test items remain in English so calibration stays valid; pattern, numerical and spatial items will appear translated in the assessment.
Frequently asked
Common questions.
How is the score calculated?+
Each correct answer contributes points weighted by item difficulty (1, 2, or 3). The total is mapped onto the standardised IQ scale (mean 100, standard deviation 15) and converted to a percentile via the normal cumulative distribution.
Is this a clinical diagnostic?+
No. LabTest IQ is a self-administered cognitive screening tool. A formal clinical assessment requires a licensed practitioner using validated instruments such as the WAIS-IV.
How long does the assessment take?+
Most people complete the 30 items in 15–25 minutes. There is no per-question countdown; you may pace yourself.
What happens to my data?+
All attempts are stored on your device only, in browser storage. Nothing is transmitted to a server unless you sign in. Clearing your browser data erases your local history.
Can I retake the assessment?+
Yes — there is no limit. Note that repeated exposure may produce inflated scores on subsequent attempts.