This free online dyslexia screener is available for adults, children (under 16), and teens (16–17). It uses weighted scoring based on British Dyslexia Association (BDA)-proportional thresholds to produce a low, moderate, or high risk result.
Dyslexia is a specific learning difference that primarily affects reading, writing, and spelling. It is not related to intelligence and affects around 10% of the population. A screening tool cannot diagnose dyslexia — only a qualified assessor can do that.