This free reaction time test measures how fast you respond to a visual signal: wait for the screen to turn green, then tap or click as quickly as you can. You do it five times and get your fastest and average time in milliseconds, plus how that compares to typical human reaction times. The average person scores about 250–300 ms on a simple visual reaction test; trained gamers and athletes often reach 200 ms or below. Your number includes a small, fixed delay from your screen and input device, so treat it as a relative score for comparing attempts and racing friends — not a calibrated clinical measurement. No sign-up, nothing stored.
Reaction speed · interactive test
Reaction Time Test
Wait for green, then tap as fast as you can. Get your average and fastest reaction time across five rounds.
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How the reaction time test works
1. Wait for green
The panel starts red — get ready but don't move yet. After a random delay (so you can't predict it) it turns green. Tapping before green is a false start and that round restarts.
2. React as fast as you can
The instant it turns green, tap the screen or click (or press the space bar). We measure the milliseconds between the green flash and your tap — that's your reaction time for the round.
3. Five rounds → your score
You repeat it five times. We show your single fastest time and your average, and place you on a band from 'lightning' to 'slow'. Because every screen and mouse adds a little lag, the number is best used to compare your own attempts over time.
Average reaction time by age
Simple visual reaction time is quickest in the late teens and twenties — roughly 250–265 ms — and slows gradually with age. The differences are real but modest; within a single session, sleep, caffeine, and focus shift your score more than age does.
| Age band | Typical average |
|---|---|
| 10–19 | 265 ms |
| 20–29 | 255 ms |
| 30–39 | 270 ms |
| 40–49 | 285 ms |
| 50–59 | 300 ms |
| 60+ | 320 ms |
Approximate means compiled from published reaction-time norms and large web-test aggregates. Online scores include a fixed device delay, so treat them as relative.
What this test can and cannot tell you
It's a real measurement. The milliseconds between the green flash and your tap are genuinely yours — your own visual-to-motor latency, which nothing can fake or compute for you.
The absolute number is relative. Your screen's refresh and response time and your mouse or touchscreen add a small, fixed delay (often 30–80 ms). It's the same every round, so it's reliable for comparing your own attempts.
It's simple reaction only. This measures responding to one expected signal — not complex reflexes, decision speed, or coordination, and it's not a medical or neurological test. For attention under conflict, try the Stroop test.
Noticed a real change? A single slow run usually just means you were tired or distracted. If you're genuinely worried about your reflexes or coordination, talk to a doctor.
Reaction time — frequently asked questions
- What is a good reaction time?
- For a simple visual reaction test (respond when the screen changes color), the average human reaction time is about 250–300 milliseconds. Anything under 250 ms is fast, and trained esports players and athletes often average around 200 ms or a little below. Times under ~150 ms usually mean you anticipated the signal rather than reacted to it.
- What is the average reaction time by age?
- Reaction time is quickest in the late teens and twenties (roughly 250–265 ms on a simple visual task) and gradually slows with age, reaching about 300–320 ms past 60. The differences are real but modest, and day-to-day factors like sleep, caffeine, and focus move your score more than age does within a single session.
- Why is my online reaction time slower than I expect?
- An online test measures your reaction PLUS a fixed delay from the system: your screen's response time and refresh rate, the browser, and your mouse or touchscreen can together add 30–80 ms. That offset is the same every round, so the test is reliable for comparing your own attempts, but it isn't a calibrated, lab-grade absolute value.
- Is this the same as the Human Benchmark reaction test?
- It works the same way — wait for green, then click — so the scores are broadly comparable. Differences in screen, input device, and number of rounds mean you shouldn't expect identical numbers across sites. We run five rounds and report your best and average, and drop obvious false starts from the average.
- How can I improve my reaction time?
- Be rested and focused, sit close with a low-lag screen and mouse, and warm up with a few practice runs — these alone often shave 20–40 ms. Beyond setup, simple reaction speed is largely fixed by biology, but consistency improves with practice, and anticipation training helps in real tasks (driving, sport, gaming) where you can read cues early.
- Does this test measure anything medical?
- No. This is a for-fun screening of simple visual reaction time, not a medical or neurological assessment. A single slow run usually just means you were tired or distracted. If you're genuinely concerned about a change in your reflexes or coordination, talk to a doctor.