Auditory Reaction Time Test

What is an auditory reaction test?

An auditory reaction test measures how fast you respond to a sound instead of a sight. The screen stays dark and unchanging, so there is nothing to watch. You wait, a short tone plays at a random moment, and you react the instant you hear it. That is the whole test: turn your sound on, listen, and go.

Like our reaction time test, it runs five trials and reports your median, the middle value, so a single early or late response does not throw off your score. React before the tone plays and it counts as a false start, and that trial restarts.

Why sound beats sight

Most people react faster to sound than to light. Auditory reaction time averages about 140-160ms, while simple visual reaction time sits closer to 200-250ms. The gap is real and it comes from basic physics and biology: a sound signal reaches the brain in roughly 8-10 milliseconds, but a visual signal takes about 20-40 milliseconds to be processed by the eye and passed on.

This is exactly why sprint races start with a gun rather than a light. At the elite level the difference matters: Olympic sprinters at the 2008 Beijing Games reacted to the starting gun in 166ms on average for men and 189ms for women, and the sport rules any start faster than 100ms a false start, because no one can truly react that quickly. You can see how your own visual number compares on our average reaction time page.

How to read your auditory reaction time

Your result is the median of five trials, in milliseconds. The percentile next to it compares that number with a research-based spread of adult auditory scores. A score a little above the lab range of 140-160ms is still normal here, since your speakers or headphones and your keyboard add a small delay that a lab setup would not.

The most useful check is to compare yourself with yourself. Take our simple reaction test on the same device with the same input method. Your sound score should come out faster than your visual one. If it doesn't, check your audio setup first, since Bluetooth headphones can add lag.

Our guide to auditory vs visual reaction time compares the two senses in more detail.

Getting an accurate score

Use headphones or a decent speaker, and set the volume where the tone is clear but not startling. Bluetooth audio can add a little lag between the signal and the sound you actually hear, so wired headphones or your device's built-in speaker will give you a cleaner number. Test in a quiet room so you are reacting to the tone, not a noise from outside.

As with any browser-based test, treat the absolute number as a ballpark and track your own trend instead. Your hardware adds a few milliseconds that a lab setup would not, but that offset is roughly the same every time, so comparing your score today against your score last week is still a fair fight.