Sources behind the tools
Your score comes from your inputs and the time on your browser.
Updated
What your score means
Clicks per second is your click count divided by the seconds you chose. Reaction time includes the delay from your device, display and browser. Typing speed uses your final text; aim accuracy includes missed shots.
Compare the same test, timer and input on the same device. These scores do not measure overall gaming skill or diagnose your hardware. The examples on test pages are our own arithmetic, not results from other players.
The references behind the tests
- W3C: browser timingUpdated 2026-09-19.
- WHATWG: browser inputUpdated 2026-09-19.
- NIST: averages and mediansUpdated 2026-09-19.
- W3C: sound timingUpdated 2026-09-19.
- WHATWG: saving on your browserUpdated 2026-09-19.
- W3C: pointer, mouse and touch eventsUpdated 2026-09-19.
- W3C: controller buttons and axesUpdated 2026-09-19.
Published reaction-time studies
The reaction-time guide cites study findings with their participants and test conditions. They are not rankings for our visitors.
- Woods, Wyma, Yund, Herron and Reed (2015), Factors influencing the latency of simple reaction timeFrontiers in Human Neuroscience. Updated 2026-09-19. CC BY.
- Woods, Wyma, Yund and Herron (2015), The Effects of Repeated Testing, Simulated Malingering, and Traumatic Brain Injury on High-Precision Measures of Simple Visual Reaction TimeFrontiers in Human Neuroscience. Updated 2026-09-19. CC BY.
Where the typing words come from
Typing words are adapted from EFF Short Wordlist #1, by the Electronic Frontier Foundation and created by Joseph Bonneau. The full list is reordered for typing and word-memory challenges.
The words are used under Creative Commons Attribution 4.0, as described in EFF’s copyright policy. Updated 2026-09-19.
A closer look at your result
Timers, target sizes, memory rounds, reaction challenges, word-combo points, sprint goals and game prices are our own settings. Updated September 19, 2026. The formulas explain what happens to your inputs. See every tool’s scoring rules.
Your score is yours to keep
Copy a result, save its score card, or download the details after a run. Files are made on your device. There is no public leaderboard or account.
Scores stay on this browser unless you share them. Clearing this site’s browser storage removes your saved scores.