Cognitive Age Calculator
Take 3 quick cognitive tests and discover your brain age. Is your brain younger or older than you?
Discover Your Brain Age
This calculator tests 3 cognitive abilities that change predictably with age: reaction time, working memory, and processing speed. It takes about 2 minutes.
Reaction Time
5 clicks
Number Memory
Digit span
Quick Math
30 seconds
How Cognitive Age Is Calculated
Your cognitive age is derived from three core metrics that are known to change predictably with age: reaction time, working memory span, and processing speed. Each metric is compared against population norms by age group to determine the age bracket your performance best matches.
Reaction time peaks in the mid-20s at around 190ms and increases by roughly 10-15ms per decade. Working memory (digit span) peaks around age 25-30 at approximately 7-8 digits and declines gradually. Processing speed follows a similar trajectory, peaking in the 20s and declining at about 5% per decade.
Your cognitive age is the weighted average of the age brackets matched by each metric. If your reaction time matches a typical 25-year-old but your memory matches a 40-year-old, your cognitive age will be somewhere in between.
Frequently Asked Questions
What is cognitive age?
Cognitive age is an estimate of how old your brain “acts” based on performance metrics like reaction time, memory span, and processing speed compared to age-normed population data. A 40-year-old with the reaction time of a typical 25-year-old would have a cognitive age younger than their chronological age.
How accurate is this calculator?
This tool provides an estimate based on population averages. It is not a clinical assessment. Factors like sleep, caffeine, and time of day affect results. Take the test multiple times at your best for the most representative score.
Can I improve my cognitive age?
Yes. Regular brain training, physical exercise, quality sleep, and a healthy diet can improve the underlying skills used in this calculator. Use your result as a benchmark you can revisit over time rather than a fixed label.