Reaction Age Test
Reaction time peaks in your early twenties and slowly drifts after that, so your speed hints at a "reaction age". Take the quick test, enter your real age if you like, and find out whether your reflexes are younger or older than you are.
Click to start
Wait for green, then click as fast as you can. Five tries, then see your reaction age.
– yr
your reaction age
Why your reaction time has an "age"
Reaction time follows a clear arc across life. It sharpens through childhood, peaks somewhere in the early twenties, holds fairly steady through the thirties, then slows a little every decade after that. Because the curve is so consistent across large datasets, a single reaction-time number can be read backwards: if you react in 250 ms, that matches the average for a certain age, and that is your reaction age.
It is meant to be fun, not clinical. Your score moves with sleep, caffeine, the device you are on and how warmed up you are, so treat a younger-than-you result as a good day and an older one as a nudge to test again rested. If you want the serious version of the data, the average reaction time by age page has the full table and the sources behind this curve.
How to get an honest reaction age
- Take it rested. Tiredness alone can add 30 to 50 ms, which reads as years older.
- Use a mouse if you can. Touchscreens and trackpads add their own lag on top of your reflexes.
- Run it a few times. We already take the median of five, but a few sessions average out a bad start.
Curious how you stack up against everyone, not just your age group? Take the main reaction time test and then check the rankings.