Research & scores
Average Reaction Time: What 255 Runs on HumanCalc Show
By HumanCalc · Published · 4 min read
The median run on HumanCalc's reaction test is 283 milliseconds. That number comes from 255 completed runs logged between 14 and 26 October 2026. Each run is the average of five taps on a panel that turns green after a random wait.
Half of those runs fell between 235 and 394 ms, so a result anywhere in that band is normal for this test. Below are the numbers split by device and by player, then the things that move a score by 20 to 50 ms.
The spread of results
The run median (283 ms) is lower than the median personal best (297 ms). That looks backwards, but it has a simple cause. Regular players finish many more runs than one-time visitors, and regulars tend to be quick, so they pull the run median down. The personal-best figure counts each player once.
These are people who chose to try a browser game on this site. They are not a random sample of adults, and the figures describe this test on the devices people used.
| Measure | Value |
|---|---|
| Completed runs | 255 |
| Median run average | 283 ms |
| Middle half of runs | 235–394 ms |
| Players with a saved best | 124 |
| Median personal best | 297 ms |
| Fastest 10% of personal bests | 209 ms or quicker |
Phones are slower than computers
The gap is about 49 ms. Some of it is hardware. A touchscreen has to register the finger, and the phone samples touch input on a fixed cycle, while a mouse click is a single switch closing. A phone screen can also draw the green panel a frame later than a desktop monitor. If you want to compare your own results over time, use the same device every time.
| Device | Runs | Median average |
|---|---|---|
| Desktop or laptop | 171 | 257 ms |
| Phone | 84 | 306 ms |
How this compares with a laboratory test
Woods and colleagues (2015) built a carefully timed reaction test and gave it to 1,469 people aged 18 to 65. Their mean was 231 ms, or 213 ms once they subtracted the delay added by their own computer hardware. Reaction time rose by about 0.55 ms per year of age and did not differ by sex or education.
HumanCalc's median of 283 ms is about 50 ms slower than that lab figure. Most of the gap comes from the setup. A browser, an ordinary screen and a phone touchscreen each add delay that a calibrated lab system removes, and HumanCalc counts an early tap as 1,500 ms, which a lab test would simply discard.
Is 250 ms a good reaction time?
On this test, yes. A 250 ms average beats the median run by about 33 ms and sits close to the fastest quarter of runs (235 ms or quicker). On a phone it is a strong result, since the phone median is 306 ms.
Averages below 200 ms over five taps are rare here. When they appear, the cause is often a lucky tap timed to the wait, which is why HumanCalc counts every early tap as 1,500 ms in the average. A single early tap in five raises the average by more than 200 ms, so guessing does not pay.
What changes your number
- Device and input: a mouse or trackpad is usually faster than a touchscreen, and a wired mouse can be faster than a Bluetooth one.
- Early taps: each one is scored as 1,500 ms on HumanCalc, so one anticipation wrecks the run.
- Warm-up: the first run of a session is often the slowest. Two or three runs settle it.
- Attention: looking at the panel itself, not at the edge of the screen or the score, saves time.
- Age: in the study below, reaction time rose by about half a millisecond per year of age between 18 and 65.
How to get a number you can compare
- Use one device and one input method, and sit the same way each time.
- Do three runs and keep the middle result. One run is too noisy to judge.
- Write down the date and the device next to the number.
- Compare against your own earlier results first, and use the figures on this page as a reference point.
Research sources
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