{"core":{"site":{"tagline":"Free online tests for your senses, reflexes and mind."},"nav":{"label":"Site","home":"Home","language":"Language","theme":"Toggle dark mode","allTests":"All tests","skip":"Skip to content","themeLight":"Switch to light theme","themeDark":"Switch to dark theme"},"home":{"title":"{site}: Free Reaction, Memory, Vision, Hearing Tests","description":"Test your reaction time, memory, color vision, hearing and personality in your browser. Free, no sign-up, and your results never leave your device.","h1a":"How sharp are your senses?","h1mark":"Test yourself in a minute.","h1b":"","lede":"Reaction time, memory, color vision, hearing, personality and more.","ledeStrong":"Free, no sign-up, and your results stay on your device.","searchLabel":"Search tests","searchPlaceholder":"What do you want to test? reflex, memory, color…","popularSearches":"Popular:","num1":"free tests","num2":"no sign-up","num3":"languages","popular":"Most played","allLink":"All {n} tests","all":"All tests","noResults":"No test matches that. Try words like reaction, memory, color or hearing.","trust1t":"Results stay with you","trust1d":"Scores are calculated in your browser. Nothing you answer or record is sent to a server.","trust2t":"No install","trust2d":"No app and no extension. A browser, a mouse or a touchscreen is enough.","trust3t":"No account","trust3d":"No sign-up and no email. Open a test and start.","num2v":"Free"},"cat":{"vision":"Vision","hearing":"Hearing","reflex":"Reflexes & Speed","memory":"Memory & Brain","personality":"Personality","sleep":"Sleep & Lifestyle","fitness":"Body & Fitness"},"tool":{"loading":"Loading test…","noscript":"This test needs JavaScript. Please enable it and reload the page.","related":"More tests","faq":"Frequently asked questions","fallbackNotice":"This page is not translated yet. Showing the English version.","toc":"Contents","next":"What's next?"},"common":{"start":"Start test","stop":"Stop","reset":"Reset","retry":"Try again","fullscreen":"Fullscreen","exitFullscreen":"Press Esc or click to exit","permissionDenied":"Permission denied. Click the lock icon in your browser's address bar, allow access and reload the page.","notSupported":"Your browser does not support this feature. Try the latest Chrome, Edge, Firefox or Safari.","noDevice":"No device found. Check it is plugged in and not used by another app.","insecure":"This test only works on a secure (https) page.","unknown":"Unknown","copy":"Copy","copied":"Copied","share":"Share result","yes":"Yes","no":"No","next":"Next","continue":"Continue","finish":"See my result","headphones":"Use headphones for this test.","notDiagnosis":"This is a self-check for curiosity and practice, not a medical diagnosis. If you are worried, talk to a qualified professional."},"footer":{"about":"About","privacy":"Privacy","contact":"Contact","tagline":"Free tests for your senses, reflexes and mind. Everything runs in your browser.","popular":"Popular","site":"Site","language":"Language","bottom":"Nothing is uploaded. Scores stay in your browser.","methodology":"How we test"},"panel":{"title":"Your personal bests","live":"This browser","sub":"Your best scores, saved only on this device.","subEmpty":"No scores yet. Play any test below and your best result appears here.","note":"Scores are stored in this browser only. Clearing site data removes them.","play":"Play →"},"result":{"label":"Your result","share":"Share result","copy":"Copy","copied":"Result copied to clipboard","copyFail":"Could not copy. Select the text manually.","retry":"Try again","shareTitle":"{title} result","via":"Tested with HumanTestKit"},"score":{"best":"Personal best","newBest":"New personal best!","typical":"typical","compare":"How you compare","history":"Your last {n} results"},"quiz":{"agree1":"Disagree","agree2":"Slightly disagree","agree3":"Neutral","agree4":"Slightly agree","agree5":"Agree","back":"Back","keys":"Keys 1–{n} also work","progress":"Question {i} of {n}"},"empty":{"note":"Nothing leaves your device."},"ad":{"label":"Advertisement"},"cards":{},"byline":{"by":"By","updated":"Updated","method":"How we test"}},"tools":{"body-fat-calculator":{"sexLabel":"Sex","male":"Male","female":"Female","unitLabel":"Units","metric":"Metric (cm)","imperial":"Imperial (in)","heightL":"Height","neckL":"Neck","waistM":"Waist at the navel","waistF":"Waist at the narrowest point","hipL":"Hips at the widest point","weightL":"Weight","optional":"(optional)","heightAria":"Height in centimetres","heightFtAria":"Height, feet","heightInAria":"Height, inches","neckAria":"Neck circumference","waistAria":"Waist circumference","hipAria":"Hip circumference","weightAria":"Body weight","fig_idleB":"Where to measure","fig_idle":"Tap a field and the matching line lights up. Use a soft tape, snug but not pressing into the skin.","fig_neckB":"Neck","fig_neck":"Just below the Adam's apple, tape sloping slightly down towards the front.","fig_waistB":"Waist","fig_waist_m":"Horizontally around the belly at the level of the navel, at the end of a normal breath out.","fig_waist_f":"Horizontally at the narrowest point between ribs and hips, at the end of a normal breath out.","fig_hipB":"Hips","fig_hip":"Horizontally around the widest part of the buttocks, feet together.","howTitle":"How to measure, step by step","how1":"Stand upright and relaxed, feet together, arms by your sides, without heavy clothing.","how2":"Keep the tape level (horizontal) all the way round, except at the neck where it slopes slightly down at the front.","how3":"Pull it snug against the skin without squeezing; do not suck in your stomach.","how4":"Measure each site three times and use the average. If one reading is far from the others, measure again.","how5":"Measure height without shoes, standing against a wall.","enter":"Enter your height, neck and waist (women also hips). Your result appears on the scale as you type.","range":"Check the numbers: height 120–230 cm, neck 20–70 cm, waist 40–220 cm, hips 50–220 cm (in inches: divide by 2.54).","checkM":"Your waist needs to be clearly larger than your neck for this formula. Check that you measured the waist at the navel and the neck below the Adam's apple.","checkF":"These numbers give an impossible result. Check the neck, waist and hip measurements and the units.","bandAria_m":"ACE body fat scale for men: essential 2–5%, athletes 6–13%, fitness 14–17%, average 18–24%, obese 25% and above","bandAria_f":"ACE body fat scale for women: essential 10–13%, athletes 14–20%, fitness 21–24%, average 25–31%, obese 32% and above","short1":"Essential","short2":"Athletes","short3":"Fitness","short4":"Average","short5":"Obese","cat0":"Below essential fat","cat1":"Essential fat","cat2":"Athletes","cat3":"Fitness","cat4":"Average","cat5":"Obese","men":"men","women":"women","resTitle":"About {bf} body fat","sub":"ACE category: {cat} ({range} for {sex}). The tape method is usually within about ±{se} points of a lab measurement, so the outlined box on the scale shows your likely range.","stCat":"ACE category","stRange":"Likely range (±1 standard error)","stFat":"Fat mass","stLean":"Lean mass","tip_l1b":"Re-measure first.","tip_l1":"Very low results are often a waist measured too high or a neck measured too low. Repeat each site three times.","tip_l2b":"Low fat has costs.","tip_l2":"Essential fat supports hormones and organs; staying near it for long is not a fitness goal.","tip_l3b":"Talk to a doctor","tip_l3":"if a very low result comes with missed periods, constant cold, dizziness or rapid weight loss.","tip_n1b":"Track the trend.","tip_n1":"Measure every 4 weeks under the same conditions; the change matters more than one number.","tip_n2b":"Keep strength training.","tip_n2":"Muscle work 2+ days a week helps you keep lean mass as you age.","tip_n3b":"Check BMI and waist too.","tip_n3":"Together they give a fuller picture than any single method.","tip_a1b":"Focus on the waist.","tip_a1":"If your waist is more than half your height, reducing it is the most useful target.","tip_a2b":"Combine cardio and strength.","tip_a2":"Adults are advised to get 150 minutes of moderate activity a week plus muscle training on 2 days.","tip_a3b":"Re-measure monthly.","tip_a3":"A drop of 1–2 points over a few months is real progress for this method.","tip_o1b":"Talk to a doctor or dietitian.","tip_o1":"A check of blood pressure, blood sugar and cholesterol tells you more about your health than body fat alone.","tip_o2b":"Start with movement you enjoy.","tip_o2":"Regular walking plus two strength sessions a week is a safe, proven start.","tip_o3b":"Watch the waist number.","tip_o3":"It responds to change sooner than the scale and is closely linked to health risk.","doctorB":"When to see a doctor:","doctor":"if your weight or waist changes quickly without a clear reason, your result is in the obese range and you want help, or a very low result comes with missed periods, dizziness or feeling cold all the time."}},"links":{"color-blind-test":{"url":"/color-blind-test/","name":"Color Blind Test","category":"vision"},"hue-test":{"url":"/hue-test/","name":"Hue Test","category":"vision"},"astigmatism-test":{"url":"/astigmatism-test/","name":"Astigmatism 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