Test Your Reaction Time
Measure your reflexes and cognitive performance with scientifically designed reaction time tests. No downloads required.
Measure Your Reflexes Accurately
Our tests provide accurate measurements of your reaction time using precise timing methods.
No Downloads Required
Run all tests directly in your browser. Works on any device with a modern browser.
Accurate Measurements
Precise timing for accurate reaction time measurement in milliseconds.
Multiple Test Types
Different tests to measure various aspects of your reaction time and cognitive performance.
Track Your Progress
Save results locally and compare your performance over time.
Export Results
Download detailed test results as JSON or TXT for your records or image to share on social media.
Free and Private
All tests run locally in your browser. No data is sent to servers.
Available Tests
Choose from our range of reaction time tests:
Auditory Reaction Time Test
Click when you hear a sound. This test measures your auditory reaction time and reflexes to audio stimuli.
AuditoryChoice Reaction Time Test
Click or tap the correct colored circle when it appears. This test measures your decision-making speed and accuracy.
VisualColor Matching Test
Match the displayed color by clicking the matching color button. This test measures color recognition and matching speed.
VisualDirection Reaction Time Test
Click the arrow button that matches the direction shown. This test measures direction recognition and response speed.
VisualDisappearing Act
Click objects before they fade away completely.
GameDual Task Test
React when you see red AND hear a beep simultaneously. This test measures dual-task performance and task interference.
CognitiveGo/No-Go Reaction Time Test
Click on green signals, do not click on red signals. This test measures your inhibitory control and response inhibition.
CognitiveMoving Target
Click on moving targets before they escape the screen.
GameOdd One Out
Find the different item in the grid as quickly as possible.
VisualPeripheral Vision Test
React to stimuli in your peripheral vision while focusing on center. This test measures peripheral awareness and focus maintenance.
VisualReflex Duel
Western showdown, wait for DRAW! then click as fast as possible.
GameSimple Reaction Test
Measure your basic reaction time by clicking when the screen changes color. This test evaluates your visual reflexes and response speed.
VisualSpatial Reaction Test
Click on the side of the screen where a circle appears. This test measures spatial awareness and left-right discrimination.
VisualStroop Reaction Time Test
Click the color of the text, not the word itself. This test measures cognitive interference and selective attention.
CognitiveWhack-a-Mole
Click the moles before they disappear! Classic arcade-style reaction game.
GameSimple 3-Step Process
Choose a Test
Select from our suite of reaction time tests based on what you want to measure.
Run the Test
Configure settings and start the test. Follow the instructions and react as quickly as possible.
View Results
See your reaction time, accuracy, and performance score. Compare with previous attempts.
Frequently Asked Questions
Reaction time measures how quickly you respond to a stimulus. It shows how fast your brain processes information and sends signals to your muscles.
Our tests use precise timing methods to calculate results. Results are accurate within a few milliseconds.
Average reaction time for visual stimuli is around 200-300 milliseconds. Professional gamers and athletes often achieve 150-200ms.
Yes. Practice, proper sleep, and regular exercise improve reaction time. Use these tests regularly to track your progress.