Set alarms and timers right in your browser — no app needed
CalcsTool Online Alarm Clock lets you set alarms and countdown timers directly in your browser. Whether you need a quick cooking timer, a study session countdown, or a wake-up alarm while working with headphones, this tool works without installing any app.
Choose from 6 different alarm sounds, adjust the volume, and set your preferred time. The alarm will ring even if you switch to another browser tab. For best results, keep the tab open and make sure your device volume is turned up.