How fast is your brain?
Eight free benchmarks for reaction time, aim, memory and typing speed. Get graded, beat your personal bests, and challenge your friends. No signup, no downloads.
Why benchmark your brain?
Reaction speed, short-term memory and typing speed are trainable. Gamers use reflex and aim drills to rank up, students use memory tests to sharpen recall, and anyone who works at a keyboard benefits from faster, more accurate typing. ReactMeter gives you a clean baseline for each skill, then tracks every attempt locally so you can watch yourself improve day by day.
Every result comes with an estimated percentile and a letter grade, so a score is never just a number - you always know where you stand against typical players. Keep your daily streak alive to build the habit.
Frequently asked questions
Is ReactMeter really free?
Yes. Every test is free, unlimited, and works on desktop and mobile. There is no account, no paywall and no install.
Where are my scores stored?
All results are stored locally in your browser (localStorage). Nothing is uploaded to a server, which also means your history will not follow you across devices.
Which test should I start with?
Reaction Time is the classic starting point - it takes under a minute. After that, try the Chimp Test if you want to be humbled by working memory, or the Typing Test if you live at a keyboard.
How accurate are the percentiles?
Percentiles are statistical estimates based on typical player distributions for tests of this kind. They are great for tracking progress and bragging rights, but they are not a clinical measurement.