[{"data":1,"prerenderedAt":86},["ShallowReactive",2],{"page:type=timer&slug=1-hour&locale=en":3},{"locale":4,"alternates":5,"title":8,"description":9,"h1":10,"lead":11,"breadcrumbs":12,"sections":21,"faq":36,"related":49,"updated":79,"affiliate":80,"tool":81,"schema":83},"en",{"es":6,"en":7},"\u002Ftemporizador\u002F1-hora","\u002Fen\u002Ftimer\u002F1-hour","1 hour timer ⏱ online with alarm","Free 1 hour timer: press Start and an alarm rings when it ends. Full screen, several sounds and works offline.","1 hour timer","1 hour countdown with alarm.",[13,16,19],{"name":14,"path":15},"Home","\u002Fen",{"name":17,"path":18},"Timer","\u002Fen\u002Ftimer",{"name":20,"path":7},"1 hour",[22,26,32],{"paragraphs":23},[24,25],"This timer is set to 1 hour. That is 3,600 seconds, 60 minutes, 3,600,000 milliseconds. 1 timers like this fit in one hour and 24 in a day.","During 1 hour a resting heart beats about 4,200 times and a person walks roughly 4,800 metres at an easy pace.",{"heading":27,"list":28},"What is a 1 hour timer good for?",[29,30,31],"a class or meeting with a hard stop","baking a cake","a full workout",{"heading":33,"paragraphs":34},"How to use it",[35],"Press the space bar or the Start button. When it reaches zero your chosen sound plays; on the main timer page you can add and chain several timers for intervals. Sound and volume settings are saved in your browser.",[37,40,43,46],{"q":38,"a":39},"How many seconds is 1 hour?","1 hour equals 3,600 seconds.",{"q":41,"a":42},"How do I set a 1 hour timer?","Press Start: the time is already set. You can pause it, reset it, change the sound or go full screen.",{"q":44,"a":45},"Will it ring if I switch tabs?","Yes. The timer keeps running in the background and rings when it ends as long as the page stays open; the tab title shows the time left.",{"q":47,"a":48},"Will my screen turn off?","In supported browsers the \"Keep the screen on\" option uses the Wake Lock API to prevent it.",[50,53,56,59,62,64,67,70,73,76],{"label":51,"path":52},"1 hour and 20 minutes timer","\u002Fen\u002Ftimer\u002F80-minutes",{"label":54,"path":55},"1 hour and 30 minutes timer","\u002Fen\u002Ftimer\u002F90-minutes",{"label":57,"path":58},"1 hour and 40 minutes timer","\u002Fen\u002Ftimer\u002F100-minutes",{"label":60,"path":61},"2 hours timer","\u002Fen\u002Ftimer\u002F120-minutes",{"label":60,"path":63},"\u002Fen\u002Ftimer\u002F2-hours",{"label":65,"path":66},"3 hours timer","\u002Fen\u002Ftimer\u002F3-hours",{"label":68,"path":69},"4 hours timer","\u002Fen\u002Ftimer\u002F4-hours",{"label":71,"path":72},"5 hours timer","\u002Fen\u002Ftimer\u002F5-hours",{"label":74,"path":75},"All timers","\u002Fen\u002Ftimer\u002Flist",{"label":77,"path":78},"Stopwatch","\u002Fen\u002Fstopwatch","2026-10-23T13:43:25.155Z","amazon-timer",{"seconds":82},3600,{"app":84},{"name":10,"category":85},"UtilitiesApplication",1792763005137]