The IQ was calculated by dividing the individual's mental age (determined by performance on the test) by his or her chronological age and multiplying by 100. Today, the most commonly-used IQ test is the Wechsler Adult Intelligence Scale.
Can you actually test your IQ online?
The HMI™ Certification is the most accurate and regognized online IQ test available, created by professionals in various research fields. It is highly accurate and specifically designed for measuring general intelligence among the entire population.