Reflex Speed Test
Catch the falling stick and measure your reflexes in distance and milliseconds
Features
Measure by catching the falling stick
Display fall distance in cm and reaction time in milliseconds simultaneously
6-level animal rating of your average
Rate your 5-trial average from Fly level to Sloth level and compare to human average
False start detection and personal best saving
Early taps trigger a redo, and your highest average is saved on your device
X share and cm/inch unit toggle
Open result text in post screen and switch distance units to inches
How to Use
Tap the reaction area to start
Tap the stick area once to enter waiting mode
Catch the stick as soon as it falls
Tap, click, or press spacebar the moment the stick starts falling
Catch 5 times and check results
Average distance and reaction time, animal rating, and human average will display
Share or try again
Share on X or copy results, or tap again to measure once more
Use Cases
Try the ruler drop test solo
Try the ruler drop test you learned in school without a ruler or partner
Compete with friends and family on ratings
Take turns measuring and compare animal ratings or average speed
Check your condition before games or sports
Confirm your reaction condition with numbers before starting
Compare sleep deprivation and fatigue effects
Compare your normal record with reaction time when sleep deprived or tired
Knowledge Base
What is the reflex speed test (ruler drop)?
The ruler drop test measures reaction speed by catching a ruler dropped by a partner and calculating speed from the distance it fell before being caught.
- How this tool measures：This tool measures in milliseconds the time from when the stick starts falling until you tap, then converts it to the distance a real ruler would fall.
Formula to calculate reaction time from fall distance
Since the ruler undergoes free fall, fall distance (cm) is calculated as 0.5×980.665×reaction time (seconds) squared.
- Example conversion from reaction time：If reaction time is 0.2 seconds, fall distance is about 19.6cm; at 0.25 seconds, about 30.6cm—slight delays create much larger distances.
- Calculate reaction time from distance：To find reaction time from fall distance, take the square root of double the distance (cm) divided by 980.665 to get seconds.
Average reaction time and animal benchmarks
Reaction time to respond to a screen signal is generally 0.2–0.3 seconds for humans; this tool displays 250ms as human average.
- Animal rating benchmarks：Animal ratings are guides for fun: 150ms or less is Fly level, 200ms or less is Cat level, 240ms or less is Dog level, 280ms or less is Human level, 350ms or less is Turtle level, and slower is Sloth level.
- Ways to improve reflex speed：Reaction time may improve with adequate sleep, regular sports requiring quick responses to cues, and repeated practice with this test.
Safety and Privacy
Tapos sa browser
Ang inilagay na data ay pinoproseso lamang sa loob ng iyong browser at hindi ipinapadala sa labas.
Proseso lamang sa loob ng browser
Measuring reaction time and converting fall distance ay ginagawa nang lubusan sa loob ng iyong browser, at ang mga input data ay hindi ipinapadala sa server.
Ang komunikasyon ay naka-encrypt gamit ang HTTPS
Ang pagkarga ng pahina ay naka-encrypt din ng TLS, at ang nilalaman ay hindi mababasa ng third party.
Walang pagpapadala sa third party
Ang mga input content ay hindi ipinapadala sa mga external na serbisyo tulad ng advertising network o tracker.
Walang awtomatikong pagpapanatili ng resulta
Measurement results and personal best at input suggestion ay hindi iniimbak sa server.
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Impormasyon ng update
- update #366
Idagdag ang Reflection Nerve Test, kunin ang nahuhulog na baston at sukatin ang distansya at milisegundo upang matukoy sa pamamagitan ng hayop
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